Paycheck MCP server

What it does

This server computes US paycheck and payroll tax calculations for 2026 across all 50 states and DC. It provides take-home pay breakdowns, bonus withholding amounts, state comparisons, and per-state tax rate schedules using real arithmetic based on 2026 tax data.

• Calculate net annual and biweekly pay for a given salary and state, including federal income tax, Social Security, Medicare, and state income tax.
• Compare take-home pay across multiple states for the same salary to see which state results in the highest net income.
• Determine exact withholding amounts for bonuses under federal supplemental rates and state-specific bonus tax treatment.

Tools this server exposes

Tool	Does
compute_take_home	Returns full paycheck breakdown for a salary in one state, including federal income tax, Social Security, Medicare, state income tax, net pay (annual/monthly/bi
compute_bonus_withholding	Returns actual withholding amounts for a bonus under federal supplemental rates, state bonus treatment, and FICA taxes.
compare_states	Compares net pay on the same salary across multiple states, ranked from highest to lowest net income with gaps relative to the best state.
get_state_rates	Returns one state's 2026 tax schedule including flat rate or bracket ladder, standard deduction, employee payroll programs, and statute citations.

Before you enable it

An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.