Missouri Income Tax Calculator 2026

Missouri brackets: 4.7% on almost everything

Missouri has eight brackets from 0% to 4.7%, but they are narrow and identical for every filing status. The top rate starts at $9,436 of taxable income, so anyone earning a full-time wage pays 4.7% on most of their income; the lower brackets save a maximum of a few hundred dollars.

Missouri uses the federal standard deduction ($16,100 single, $32,200 joint, $24,150 head of household) or your federal itemized deductions with adjustments. There is no personal or dependent exemption.

The federal income tax deduction

Missouri is one of the few states that lets you deduct part of your federal income tax. The percentage depends on Missouri adjusted gross income, and the deduction is capped at $5,000 ($10,000 for married filing combined).

Worked example: family of four with $90,000

A married couple filing combined with two children and $90,000 of wages subtracts the $32,200 standard deduction, leaving $57,800 of taxable income before the federal tax deduction. Missouri tax on that amount is $2,536. With Missouri AGI between $50,001 and $100,000, they can also deduct 15% of their federal income tax, which lowers the bill further. Our calculator does not apply this deduction, so its Missouri figure is slightly high for incomes under $125,000.

Social Security, pensions and capital gains

Missouri has removed several types of income from its tax base in recent years.

• Social Security and Social Security Disability: fully exempt for taxpayers 62 or older and SSDI recipients, claimed on Form MO-A.
• Public and private pensions: separate exemptions on Form MO-A, with limits.
• Capital gains: from 2025, 100% of capital gains reported federally is subtracted from Missouri AGI.
• Active-duty military pay is subtracted from Missouri income.

Credits, residency and the deadline

The Missouri Working Family Tax Credit equals 20% of your federal earned income credit for 2025 and is not refundable. Seniors and 100% disabled residents with low incomes can claim the property tax credit on Form MO-PTC.

Residents earning income in another state claim a credit on Form MO-CR; nonresidents and part-year residents use Form MO-NRI to tax only their Missouri share. The 2026 MO-1040 is due April 15, 2027, with an extension to October 15 to file but not to pay. Kansas City and St. Louis earnings taxes are filed separately with each city.