Missouri Income
Tax Rates & Rules

Missouri uses graduated individual income tax rates in 2026, with a top marginal rate of 4.7 percent. The official 2026 estimated-tax schedule begins at 0 percent on the first $1,348 of Missouri taxable income and reaches 4.7 percent on taxable income above $9,436.

2026 Missouri Income Tax Brackets

Missouri's 2026 tax schedule has eight rate levels from 0 percent through 4.7 percent. The brackets are indexed and apply to Missouri taxable income rather than gross salary.

The top rate is marginal. Reaching the 4.7 percent bracket does not cause all Missouri taxable income to be taxed at 4.7 percent. Each portion of taxable income is calculated under the applicable step in the schedule.

How Missouri Taxable Income Is Built

Missouri starts with federal adjusted gross income, then applies Missouri additions, subtractions, deductions and exemptions to arrive at Missouri taxable income. The state tax schedule is applied after those adjustments.

• Start with expected federal adjusted gross income.
• Apply Missouri additions and subtractions reported through Form MO-A when required.
• Subtract qualifying pension, Social Security or military exemptions when applicable.
• Subtract Missouri-specific deductions.
• Subtract the Missouri standard deduction or allowed itemized deductions.
• Apply the 2026 Missouri tax schedule.
• Apply withholding, credits plus estimated payments to determine the remaining liability.

Missouri Standard Deduction Amounts for 2026

Missouri's 2026 estimated-tax instructions use standard deduction amounts that match the current federal standard deduction amounts used in the Missouri calculation. Filing status therefore changes the amount of income that reaches the Missouri tax brackets.

Head of household and qualifying surviving spouse filers can also have a Missouri additional exemption under the state's estimated-tax worksheet. Taxpayers who itemize should follow the Missouri itemized-deduction rules rather than automatically using the standard deduction.

Who Has to File a Missouri Income Tax Return?

Missouri filing depends on federal filing status, Missouri adjusted gross income, residency and Missouri-source income. The state provides exceptions for taxpayers whose income is below the applicable Missouri thresholds.

• A taxpayer generally does not file Missouri when no federal return is required, unless another Missouri filing reason applies.
• A resident may not need to file when Missouri adjusted gross income is less than $1,200.
• A nonresident may not need to file when Missouri income is less than $600.
• A taxpayer may also be below the filing requirement when Missouri adjusted gross income is less than the standard deduction plus personal exemption.
• A taxpayer with Missouri tax withheld can still file to claim a refund even when a return is not otherwise required.

Resident, Nonresident and Part-Year Resident Rules

A Missouri resident generally reports income from all sources on Form MO-1040. A nonresident is taxed on Missouri-source income. Part-year residents can choose the state method that fits their circumstances when separating Missouri income from income earned elsewhere.

A part-year resident can use Form MO-NRI to calculate the Missouri income percentage or use Form MO-CR when filing as a resident and claiming credit for income tax paid to another state. The better method depends on the taxpayer's income pattern and the other state's tax.

Missouri Remote Work Is Sourced to Where the Services Are Performed

A nonresident who performs all services outside Missouri for a Missouri-based employer generally does not owe Missouri income tax on those wages. Missouri's current remote-work guidance treats the physical location of the services as a key sourcing factor.

A Missouri resident working remotely for an out-of-state employer still reports the income to Missouri because residents generally report income from all sources. A credit for income tax paid to another state can be available when the same income is properly taxed by both states.

If the question is how state withholding changes one paycheck, the Missouri paycheck calculator is the better tool for the pay-period estimate.

Missouri Withholding Uses Form MO W-4 and 2026 Tables

Missouri employers calculate wage withholding from the employee's Form MO W-4 information and the 2026 withholding formula or wage tables. The withholding schedule reaches the same 4.7 percent top rate but uses payroll-period calculations to estimate the employee's annual Missouri tax.

Withholding is not the final tax liability. Annual income, Missouri modifications, pensions, Social Security, deductions, credits plus income taxed by another state can change the final return.

Social Security and Public Pension Deductions Can Reduce Missouri Income

Missouri provides deductions for qualifying Social Security, Social Security disability plus certain public pension income. Beginning with tax years after January 1, 2024, the Missouri adjusted gross income limitation was removed from the public pension and Social Security deduction calculations.

The deduction rules still depend on the type of retirement payment. Public pension relief is not the same as a blanket exemption for every retirement distribution, so taxpayers should follow the current MO-A instructions when reporting pension or retirement income.

Estimated Tax Can Be Required at a Low Liability Threshold

Missouri requires an individual estimated tax declaration when expected Missouri estimated tax is $100 or more after credits and expected withholding. This threshold can affect self-employed taxpayers, investors or employees with too little Missouri withholding.

For 2026, estimated payments are generally scheduled for April 15, June 15, September 15 plus January 15 of the following year. A taxpayer can pay the full estimate with the first declaration or use installments under the state's rules.

Kansas City and St. Louis Have Separate 1 Percent Earnings Taxes

Missouri state income tax is not the only income-based tax that can affect workers in major Missouri cities. Kansas City and the City of St. Louis each impose a separate 1 percent earnings tax under their local rules.

Kansas City residents generally owe the city earnings tax even when they work outside the city, while nonresidents owe it on earned income from work inside Kansas City. St. Louis similarly taxes city residents on earned income plus nonresidents who work or perform services in the city. These local taxes are administered by the cities rather than the Missouri Department of Revenue.

Missouri Residents Can Receive Credit for Tax Paid to Another State

A full-year or part-year Missouri resident who earns income in another state can be eligible for a credit against Missouri tax. Form MO-CR is used when the same income is taxed by Missouri and the other state.

The credit should be based on the actual other-state tax liability rather than simply the amount withheld. The taxpayer must generally include the other state's return to support the Missouri credit.

Payroll Records Support Missouri Income Tax Review

Pay stubs help track Missouri withholding, local earnings taxes when shown by payroll, current wages plus year-to-date amounts. They do not replace Form MO-1040 or the supporting state schedules used to determine annual liability.

For verified payroll documentation, the Missouri pay stub generator can organize genuine earnings and deduction details. The online paystub generator should be used only with truthful payroll information for lawful business and recordkeeping purposes.