| season_id | No | Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted. | |
| tolerance | No | Dollar tolerance for the equivalent-salary search. Defaults to 1. | |
| base_salary | No | 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_team | Yes | Team that pays the known salary. | |
| birth_country | No | Birth country code used with is_us_person. | |
| filing_status | No | Single or Married_Joint. Defaults to Single when omitted. | |
| signing_bonus | No | Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay. | |
| baseline_salary | No | One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary. | |
| comparison_team | Yes | Team whose gross pay is solved to match baseline after-tax income. | |
| contract_season | No | Contract season label, such as 2025-26. | |
| primary_domicile | No | Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted. | |
| performance_bonus | No | Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true. | |
| other_duty_day_pay | No | NFL cash bucket added to the duty-day base before the season total is summed. | |
| other_inducement_pay | No | NFL cash bucket added into signing_bonus. | |
| estimated_playoff_games | No | Extra postseason games. Use 0 when there are none. | |
| comparison_primary_domicile | No | Resident tax home modeled for the comparison team. | |
| exempt_signing_bonus_from_jock_tax | No | When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation. | |
| include_performance_bonus_in_jock_tax | No | When true, performance_bonus is part of the season total and of duty-day pay. | |