Jock Taxes Developer MCP
REMOTE · JOCKTAXES.COM
Pro athlete tax calculators for MLB, NBA, NFL and NHL. Requires a Jock Taxes API key.
Available components
Last scanned (9 hours ago)
Scores higher than 55% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability33
- 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Fail
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 15718 tokens (~523/item across 30 items; 14 tools + 16 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management47
- Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 99% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 14 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 0
- Tool “calculate_mlb_tax” rewrote its description, which is the text the model reads security
- Tool “calculate_nba_tax” rewrote its description, which is the text the model reads security
- Tool “calculate_nfl_tax” rewrote its description, which is the text the model reads security
- Tool “calculate_nhl_tax” rewrote its description, which is the text the model reads security
- Tool “equivalent_mlb_salary” rewrote its description, which is the text the model reads security
- Tool “equivalent_nba_salary” rewrote its description, which is the text the model reads security
- Tool “equivalent_nfl_salary” rewrote its description, which is the text the model reads security
- Tool “equivalent_nhl_salary” rewrote its description, which is the text the model reads security
- Tool “player_movement_mlb” rewrote its description, which is the text the model reads security
- Tool “player_movement_nba” rewrote its description, which is the text the model reads security
- Tool “player_movement_nfl” rewrote its description, which is the text the model reads security
- Tool “player_movement_nhl” rewrote its description, which is the text the model reads security
- Schema quality: 247 → 523 ▼ functional
- “calculate_mlb_tax” added an optional parameter “agent_fee_pct” cosmetic
- “calculate_mlb_tax” added an optional parameter “include_payroll_taxes” cosmetic
- “calculate_mlb_tax” added an optional parameter “rca_contribution” cosmetic
- “calculate_mlb_tax” added an optional parameter “rca_payout_tax_rate” cosmetic
- “calculate_mlb_tax” added an optional parameter “retirement_catch_up” cosmetic
- “calculate_mlb_tax” added an optional parameter “retirement_contribution” cosmetic
- “calculate_mlb_tax” added an optional parameter “retirement_contribution_type” cosmetic
- “calculate_nba_tax” added an optional parameter “agent_fee_pct” cosmetic
- “calculate_nba_tax” added an optional parameter “include_payroll_taxes” cosmetic
- “calculate_nba_tax” added an optional parameter “rca_contribution” cosmetic
- “calculate_nba_tax” added an optional parameter “rca_payout_tax_rate” cosmetic
- “calculate_nba_tax” added an optional parameter “retirement_catch_up” cosmetic
- “calculate_nba_tax” added an optional parameter “retirement_contribution” cosmetic
- “calculate_nba_tax” added an optional parameter “retirement_contribution_type” cosmetic
- “calculate_nfl_tax” added an optional parameter “agent_fee_pct” cosmetic
- “calculate_nfl_tax” added an optional parameter “include_payroll_taxes” cosmetic
- “calculate_nfl_tax” added an optional parameter “rca_contribution” cosmetic
- “calculate_nfl_tax” added an optional parameter “rca_payout_tax_rate” cosmetic
- “calculate_nfl_tax” added an optional parameter “retirement_catch_up” cosmetic
- “calculate_nfl_tax” added an optional parameter “retirement_contribution” cosmetic
- “calculate_nfl_tax” added an optional parameter “retirement_contribution_type” cosmetic
- “calculate_nhl_tax” added an optional parameter “agent_fee_pct” cosmetic
- “calculate_nhl_tax” added an optional parameter “include_payroll_taxes” cosmetic
- “calculate_nhl_tax” added an optional parameter “rca_contribution” cosmetic
- “calculate_nhl_tax” added an optional parameter “rca_payout_tax_rate” cosmetic
- “calculate_nhl_tax” added an optional parameter “retirement_catch_up” cosmetic
- “calculate_nhl_tax” added an optional parameter “retirement_contribution” cosmetic
- “calculate_nhl_tax” added an optional parameter “retirement_contribution_type” cosmetic
- “equivalent_mlb_salary” added an optional parameter “agent_fee_pct” cosmetic
- “equivalent_mlb_salary” added an optional parameter “include_payroll_taxes” cosmetic
- “equivalent_mlb_salary” added an optional parameter “rca_contribution” cosmetic
- “equivalent_mlb_salary” added an optional parameter “rca_payout_tax_rate” cosmetic
- “equivalent_mlb_salary” added an optional parameter “retirement_catch_up” cosmetic
- “equivalent_mlb_salary” added an optional parameter “retirement_contribution” cosmetic
- “equivalent_mlb_salary” added an optional parameter “retirement_contribution_type” cosmetic
- “equivalent_nba_salary” added an optional parameter “agent_fee_pct” cosmetic
- “equivalent_nba_salary” added an optional parameter “include_payroll_taxes” cosmetic
- “equivalent_nba_salary” added an optional parameter “rca_contribution” cosmetic
- “equivalent_nba_salary” added an optional parameter “rca_payout_tax_rate” cosmetic
- “equivalent_nba_salary” added an optional parameter “retirement_catch_up” cosmetic
- “equivalent_nba_salary” added an optional parameter “retirement_contribution” cosmetic
- “equivalent_nba_salary” added an optional parameter “retirement_contribution_type” cosmetic
- “equivalent_nfl_salary” added an optional parameter “agent_fee_pct” cosmetic
- “equivalent_nfl_salary” added an optional parameter “include_payroll_taxes” cosmetic
- “equivalent_nfl_salary” added an optional parameter “rca_contribution” cosmetic
- “equivalent_nfl_salary” added an optional parameter “rca_payout_tax_rate” cosmetic
- “equivalent_nfl_salary” added an optional parameter “retirement_catch_up” cosmetic
- “equivalent_nfl_salary” added an optional parameter “retirement_contribution” cosmetic
- “equivalent_nfl_salary” added an optional parameter “retirement_contribution_type” cosmetic
- “equivalent_nhl_salary” added an optional parameter “agent_fee_pct” cosmetic
- “equivalent_nhl_salary” added an optional parameter “include_payroll_taxes” cosmetic
- “equivalent_nhl_salary” added an optional parameter “rca_contribution” cosmetic
- “equivalent_nhl_salary” added an optional parameter “rca_payout_tax_rate” cosmetic
- “equivalent_nhl_salary” added an optional parameter “retirement_catch_up” cosmetic
- “equivalent_nhl_salary” added an optional parameter “retirement_contribution” cosmetic
- “equivalent_nhl_salary” added an optional parameter “retirement_contribution_type” cosmetic
- “player_movement_mlb” added an optional parameter “agent_fee_pct” cosmetic
- “player_movement_mlb” added an optional parameter “include_payroll_taxes” cosmetic
- “player_movement_mlb” added an optional parameter “rca_contribution” cosmetic
- “player_movement_mlb” added an optional parameter “rca_payout_tax_rate” cosmetic
- “player_movement_mlb” added an optional parameter “retirement_catch_up” cosmetic
- “player_movement_mlb” added an optional parameter “retirement_contribution” cosmetic
- “player_movement_mlb” added an optional parameter “retirement_contribution_type” cosmetic
- “player_movement_nba” added an optional parameter “agent_fee_pct” cosmetic
- “player_movement_nba” added an optional parameter “include_payroll_taxes” cosmetic
- “player_movement_nba” added an optional parameter “rca_contribution” cosmetic
- “player_movement_nba” added an optional parameter “rca_payout_tax_rate” cosmetic
- “player_movement_nba” added an optional parameter “retirement_catch_up” cosmetic
- “player_movement_nba” added an optional parameter “retirement_contribution” cosmetic
- “player_movement_nba” added an optional parameter “retirement_contribution_type” cosmetic
- “player_movement_nfl” added an optional parameter “agent_fee_pct” cosmetic
- “player_movement_nfl” added an optional parameter “include_payroll_taxes” cosmetic
- “player_movement_nfl” added an optional parameter “rca_contribution” cosmetic
- “player_movement_nfl” added an optional parameter “rca_payout_tax_rate” cosmetic
- “player_movement_nfl” added an optional parameter “retirement_catch_up” cosmetic
- “player_movement_nfl” added an optional parameter “retirement_contribution” cosmetic
- “player_movement_nfl” added an optional parameter “retirement_contribution_type” cosmetic
- “player_movement_nhl” added an optional parameter “agent_fee_pct” cosmetic
- “player_movement_nhl” added an optional parameter “include_payroll_taxes” cosmetic
- “player_movement_nhl” added an optional parameter “rca_contribution” cosmetic
- “player_movement_nhl” added an optional parameter “rca_payout_tax_rate” cosmetic
- “player_movement_nhl” added an optional parameter “retirement_catch_up” cosmetic
- “player_movement_nhl” added an optional parameter “retirement_contribution” cosmetic
- “player_movement_nhl” added an optional parameter “retirement_contribution_type” cosmetic
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 22 Oct 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://jocktaxes.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=jocktaxes.com | CN=YE1,O=Let's Encrypt,C=US | 10 Sept 2026 | 9 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 69ebf0cd6da6addbede2dbdad8f4c31f6c1 |
| SANs: *.jocktaxes.com, jocktaxes.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of jocktaxes.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| jocktaxes.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://jocktaxes.com/mcp | Verified | 200 | |
| http (plaintext) | http://jocktaxes.com/mcp | HTTPS enforced | 301 | https://jocktaxes.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
calculate_mlb_tax Calculate MLB tax ~1,300
Calculate professional-athlete tax for one MLB season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| salary | – | – | One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| team | string | yes | Team code, such as BOS. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
calculate_nba_tax Calculate NBA tax ~1,300
Calculate professional-athlete tax for one NBA season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| salary | – | – | One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| team | string | yes | Team code, such as BOS. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
calculate_nfl_tax Calculate NFL tax ~1,343
Calculate professional-athlete tax for one NFL season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| other_duty_day_pay | – | – | NFL cash bucket added to the duty-day base before the season total is summed. |
| other_inducement_pay | – | – | NFL cash bucket added into signing_bonus. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| salary | – | – | One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| team | string | yes | Team code, such as BOS. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
calculate_nhl_tax Calculate NHL tax ~1,300
Calculate professional-athlete tax for one NHL season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| salary | – | – | One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| team | string | yes | Team code, such as BOS. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
equivalent_mlb_salary Match MLB after-tax salary ~1,239
Find the gross salary on a comparison MLB team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary. |
| baseline_salary | – | – | One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| baseline_team | string | yes | Team that pays the known salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled for the comparison team. |
| comparison_team | string | yes | Team whose gross pay is solved to match baseline after-tax income. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| tolerance | – | – | Dollar tolerance for the equivalent-salary search. Defaults to 1. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
equivalent_nba_salary Match NBA after-tax salary ~1,239
Find the gross salary on a comparison NBA team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary. |
| baseline_salary | – | – | One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| baseline_team | string | yes | Team that pays the known salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled for the comparison team. |
| comparison_team | string | yes | Team whose gross pay is solved to match baseline after-tax income. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| tolerance | – | – | Dollar tolerance for the equivalent-salary search. Defaults to 1. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
equivalent_nfl_salary Match NFL after-tax salary ~1,282
Find the gross salary on a comparison NFL team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary. |
| baseline_salary | – | – | One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| baseline_team | string | yes | Team that pays the known salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled for the comparison team. |
| comparison_team | string | yes | Team whose gross pay is solved to match baseline after-tax income. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| other_duty_day_pay | – | – | NFL cash bucket added to the duty-day base before the season total is summed. |
| other_inducement_pay | – | – | NFL cash bucket added into signing_bonus. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| tolerance | – | – | Dollar tolerance for the equivalent-salary search. Defaults to 1. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
equivalent_nhl_salary Match NHL after-tax salary ~1,239
Find the gross salary on a comparison NHL team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary. |
| baseline_salary | – | – | One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| baseline_team | string | yes | Team that pays the known salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled for the comparison team. |
| comparison_team | string | yes | Team whose gross pay is solved to match baseline after-tax income. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| tolerance | – | – | Dollar tolerance for the equivalent-salary search. Defaults to 1. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
list_tax_calculator_inputs List calculator inputs ~42
List leagues, seasons, filing statuses, and team codes accepted by the NHL, NFL, MLB, and NBA tax calculators. Does not use request quota.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| filing_statuses | array | yes | – |
| leagues | array | yes | – |
| season_ids_by_league | object | yes | – |
| teams | array | yes | – |
No examples provided.
list_team_players List team players ~116
List player ids and pay for one team and season from the salary tables. Requires league, team, and season_id. Match the user's name against name and last_first. If several rows fit, or none fit, ask the user which person they mean. Copy season_total into the calculator's one-amount field, or copy base_salary, signing_bonus, and performance_bonus for Salary + Bonuses. Does not use request quota.
| Name | Type | Req | Description |
|---|---|---|---|
| league | string | yes | – |
| season_id | string | yes | – |
| team | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| league | string | yes | – |
| players | array | yes | – |
| season_id | string | yes | – |
| team | string | yes | – |
No examples provided.
player_movement_mlb Compare MLB move ~1,209
Compare after-tax income when a MLB player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled on the destination team. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| from_team | string | yes | Team the player leaves. |
| gross_salary | – | – | One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| to_team | string | yes | Team the player joins. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
player_movement_nba Compare NBA move ~1,209
Compare after-tax income when a NBA player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled on the destination team. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| from_team | string | yes | Team the player leaves. |
| gross_salary | – | – | One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| to_team | string | yes | Team the player joins. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
player_movement_nfl Compare NFL move ~1,252
Compare after-tax income when a NFL player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled on the destination team. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| from_team | string | yes | Team the player leaves. |
| gross_salary | – | – | One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| other_duty_day_pay | – | – | NFL cash bucket added to the duty-day base before the season total is summed. |
| other_inducement_pay | – | – | NFL cash bucket added into signing_bonus. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| to_team | string | yes | Team the player joins. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
player_movement_nhl Compare NHL move ~1,209
Compare after-tax income when a NHL player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. Results are income tax only unless the user asks for take-home: then send include_payroll_taxes, agent_fee_pct, retirement_contribution (401(k), or RRSP on a Canadian club) or rca_contribution (Canadian clubs), and report result.net_pay. Comparisons then match on net_pay.net_economic, which counts an RCA after its estimated payout tax (rca_payout_tax_rate; default 25% Canadian withholding on the US-duty-day share and the US federal marginal rate on the rest, or 25% on all of it for a US person).
| Name | Type | Req | Description |
|---|---|---|---|
| agent_fee_pct | – | – | Agent fee as a percent of gross pay (0-10), treated as a non-deductible cost. Default 0. |
| art_xvi4_inducement_sb | boolean | – | Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club. |
| base_salary | – | – | Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary. |
| birth_country | – | – | Birth country code used with is_us_person. |
| comparison_primary_domicile | – | – | Resident tax home modeled on the destination team. |
| contract_season | – | – | Contract season label, such as 2025-26. |
| estimated_playoff_games | – | – | Extra postseason games. Use 0 when there are none. |
| exempt_signing_bonus_from_jock_tax | – | – | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. |
| filing_status | – | – | Single or Married_Joint. Defaults to Single when omitted. |
| from_team | string | yes | Team the player leaves. |
| gross_salary | – | – | One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary. |
| include_payroll_taxes | – | – | Opt in to employee payroll taxes for each team's employer: FICA (Social Security, Medicare, Additional Medicare) and the home state's disability or paid-leave levy for US clubs; CPP/QPP, EI and QPIP… |
| include_performance_bonus_in_jock_tax | boolean | – | When true, performance_bonus is part of the season total and of duty-day pay. |
| performance_bonus | – | – | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. |
| primary_domicile | – | – | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. |
| rca_contribution | – | – | Salary deferred into a Retirement Compensation Arrangement by a Canadian club, in USD. Excluded from Canadian employment income until paid out: from worldwide income for a Canadian resident and in fu… |
| rca_payout_tax_rate | – | – | Estimated tax on the RCA when it is paid out, as a percent (0-100). Default models a player who retires to a no-tax US state and draws the RCA and its refundable tax account down at once: the US-duty… |
| retirement_catch_up | – | – | none (default), 50_plus (+$8,000) or 60_to_63 (+$11,250). Catch-up contributions are always Roth for athletes (prior-year FICA wages over $150,000). |
| retirement_contribution | – | – | Annual retirement contribution in USD. On a US club it is a 401(k) elective deferral capped at the 2026 limit ($24,500 plus catch-up). On a Canadian club it is an RRSP contribution capped at C$33,810… |
| retirement_contribution_type | – | – | 401(k) only: pretax (default) lowers income-tax wages except in Pennsylvania, Philadelphia, Pittsburgh, Ohio cities, Kansas City and St. Louis; roth lowers nothing. RRSP contributions are always dedu… |
| season_id | – | – | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. |
| signing_bonus | – | – | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. |
| to_team | string | yes | Team the player joins. |
| Name | Type | Req | Description |
|---|---|---|---|
| defaults | array | yes | – |
| disclaimer | string | yes | – |
| inputs | object | yes | – |
| result | object | yes | – |
| sport | string | yes | – |
No examples provided.
How do I install the Jock Taxes Developer MCP server?
Jock Taxes Developer MCP is a hosted endpoint at https://jocktaxes.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · jocktaxes.com
claude mcp add --transport http com-jocktaxes-developer 'https://jocktaxes.com/mcp'
What is the Jock Taxes Developer MCP server?
Jock Taxes Developer MCP is listed in the public MCP registry as com.jocktaxes/developer. Pro athlete tax calculators for MLB, NBA, NFL and NHL. Requires a Jock Taxes API key. This page covers its hosted endpoint (https://jocktaxes.com/mcp).
Is the Jock Taxes Developer MCP server safe to use?
Jock Taxes Developer MCP scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Jock Taxes Developer MCP server expose?
Jock Taxes Developer MCP exposes 14 tools: calculate_nhl_tax, equivalent_nhl_salary, player_movement_nhl, calculate_nfl_tax, equivalent_nfl_salary, and 9 more. Their descriptions and schemas cost roughly 15,279 tokens of context every time the server is loaded.
Does the Jock Taxes Developer MCP server require authentication?
No. We connected to Jock Taxes Developer MCP without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Jock Taxes Developer MCP server still maintained?
Jock Taxes Developer MCP is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.