Bonus Tax Calculator — Missouri (2026)
Bonuses in Missouri are taxed as supplemental wages: the employer usually withholds a flat 22% federal, plus 7.65% FICA and Missouri state withholding. Withholding is not the final tax; the true cost is settled on your return. Enter your bonus to see both. Missouri uses a progressive income tax with 8 brackets running from 0.00% up to 4.70%, applied after a state standard deduction of $16,100.
Missouri Bonus Tax Calculator
The gross bonus before withholding.
Percentage method vs aggregate method
Under the percentage method the bonus is separated from regular pay and hit with the flat 22% federal rate (37% above $1 million of supplemental wages in a year). Under the aggregate method the employer combines the bonus with your normal check and withholds at your marginal rate — which can temporarily withhold far more than 22%.
Either way the bonus is ordinary income. If your marginal federal bracket is 24% or higher, the 22% flat withholding leaves you short at filing time; if you are in the 12% bracket, you are over-withheld and get it back as a refund.
The Missouri layer on bonuses
Missouri taxes bonus income at the same progressive brackets as salary — up to 4.70%. A $10,000 bonus therefore carries roughly $470 of Missouri tax at the top rate, on top of federal and FICA.
Kansas City and St. Louis levy a 1% earnings tax on residents and on non-residents who work in the city.
Reducing the tax on a Kansas City bonus
Deferring part of the bonus into a 401(k) or HSA cuts federal and Missouri income tax immediately, though FICA still applies. Some employers allow a separate bonus deferral election — ask payroll before the payment date, not after.
Timing matters too: pushing a bonus into January shifts the tax year, useful if this year included unusually high income from logistics work or an equity event.
Local and payroll taxes Missouri adds on top
Kansas City and St. Louis each levy a 1% earnings tax on wages earned in the city. That deduction sits outside the federal and state income tax lines, so build it into your own budget on top of the numbers above.
Kansas City and St. Louis levy a 1% earnings tax on residents and on non-residents who work in the city.
Bonuses are wages, so every local layer that applies to your regular Missouri paycheck applies to the bonus too — which is why a supplemental payment often nets a smaller share than your salary does.
Working across a state line from Missouri
Missouri has no income-tax reciprocity agreements, so if you live here and work across a state line you generally file a nonresident return in the work state and claim a credit at home to avoid double taxation.
Remote and hybrid work complicates this further: most states tax income where the work is physically performed, so a Kansas City resident spending part of the year at a client site in Kansas may owe a nonresident return there. Keep a day-count log if you split time between states.
The rest of your Missouri tax bill
Missouri charges a 4.225% state sales tax, homeowners pay an average effective property tax of 0.98% of market value, and the minimum wage in force during 2026 is $15.00 an hour.
Local rates lift combined sales tax to about 8.4% on average.
Income tax is only one part of a state's take. Missouri recovers revenue through sales and property tax as well, which is why headline income tax rates alone are a poor guide to how far a salary really goes. Missouri exempts Social Security and offers public pension and private pension deductions subject to income limits.
Missouri vs Kansas on the same salary
On a $75,000 salary, a single filer keeps about $58,995 a year in Missouri against roughly $57,690 in Kansas — a difference of $1,305, or $109 a month.
Effective combined rates are 21.3% in Missouri and 23.1% in Kansas. Set that gap against living costs: index 88 here versus 87 there, with property tax at 0.98% and 1.34% respectively.
Missouri income tax brackets 2026 (single filer)
| Taxable income | Rate |
|---|---|
| $0 – $1,273 | 0.00% |
| $1,273 – $2,546 | 2.00% |
| $2,546 – $3,819 | 2.50% |
| $3,819 – $5,092 | 3.00% |
| $5,092 – $6,365 | 3.50% |
| $6,365 – $7,638 | 4.00% |
| $7,638 – $8,911 | 4.50% |
| $8,911 and up | 4.70% |