Missouri Paycheck Calculator

Missouri's top income tax rate has been on a gradual downward path in recent years, driven by Senate Bill 3 (2022), which set up a series of revenue-growth triggers that automatically reduce the top rate when state revenue collections meet certain benchmarks. That mechanism has cut the top rate from 5.3% down to the current 4.7% over the last several years.

The Missouri Department of Revenue's own 2026 Withholding Tax Formula confirms the top rate remains unchanged at 4.7% for tax year 2026 specifically — the revenue trigger was not met for a further reduction this year. Tax Foundation's independently published 2026 state tax table cross-checks the identical eight-bracket schedule and threshold dollars ($1,348 through $9,436), confirmed via a mirror source after the Department of Revenue's own PDF returned a direct-fetch error during research.

Whether a future year sees another trigger-driven cut depends on Missouri's actual revenue performance, which this calculator does not attempt to predict — it reflects the confirmed, current 4.7% top rate only.

Missouri's approach to married filing jointly is structurally different from most progressive-tax states on this site. Rather than doubling (or otherwise widening) the bracket dollar thresholds for a married couple, Missouri applies the identical $1,348/$2,696/$4,044/$5,392/$6,740/$8,088/$9,436 thresholds regardless of filing status — confirmed via the Missouri Revisor of Statutes, RSMo §143.011, and reproduced consistently across every third-party summary checked during research.

Instead, the difference between single and married Missouri filers comes entirely through the standard deduction: Missouri's own 2026 withholding formula sets it at $16,100 for single filers or married filing jointly where the spouse also works, and $32,200 for married filing jointly where the spouse does not work — simply conforming dollar-for-dollar to the equivalent federal standard deduction figures.

This calculator applies that same structure: the SOUTH_CAROLINA-style pattern of identical brackets with a differing deduction, which Missouri and South Carolina both use, though for genuinely different underlying reasons (Missouri's own statutory choice versus South Carolina's federal-conformity tax base).

Missouri does not levy statewide local income taxes on top of the state rate for most of the state, but Kansas City and St. Louis are the exception: both cities levy their own separate flat 1% earnings tax, on residents' full earned income and on nonresidents' income earned from work physically performed within city limits. Voters in both cities reaffirmed the tax for another five years in their respective April 2026 renewal elections, confirmed directly against each city's own finance/revenue department page.

Use the locality selector above to add Kansas City's or St. Louis's 1% earnings tax on top of Missouri's state income tax — select 'None' if you neither live nor work within either city's limits, and the figure stays at $0. Because both cities currently charge the identical 1% rate on gross wages with no wage floor or cap, the dollar amount only depends on which city (if either) you select, not on filing status or income bracket.

This calculator's earnings-tax figure is a straightforward flat-rate estimate of the withholding obligation described above; it does not attempt to apportion a nonresident's tax across partial days worked in and out of the city, a refund mechanism St. Louis in particular offers for whole days worked outside city limits — see the city's own Collector of Revenue page for that calculation.

This calculator's Missouri figures cover federal income tax, Missouri's eight-bracket state income tax, Kansas City's or St. Louis's earnings tax when selected, and the two federal FICA taxes — the complete set of withholding categories that apply broadly to Missouri wage earners. Missouri has no state-run disability insurance or paid-family-leave payroll premium as of 2026, unlike states such as Colorado, Minnesota, Connecticut, or Oregon that layer a genuine second payroll deduction on top of income tax.