Updated September 5, 2026. Quick answer: No, as of the 2024 tax year. Missouri used to phase out its Social Security exemption above income limits, but removed the limit entirely starting in 2024.
Confidence note: high. This page is scoped to Social Security taxation specifically. For the state’s full retirement-tax picture (pensions, tax rates, estate and probate), see how Missouri taxes retirement income generally.
How Missouri taxes Social Security benefits
| State personal income tax | Yes |
|---|---|
| Social Security treatment | Not taxed |
| How it works | For tax years beginning on or after January 1, 2024, RSMo § 143.124 provides that “a taxpayer shall be entitled to the maximum exemption … regardless of the taxpayer’s filing status or the amount of the taxpayer’s Missouri adjusted gross income,” removing the prior $85,000/$100,000 income caps. |
| Income threshold / phase-out | Fully exempt at every income level for tax years 2024 and later (prior law capped the exemption at $85,000 single / $100,000 joint Missouri AGI). |
Coordinate this with your overall retirement plan
An adviser can help weigh how much of your Social Security income actually reaches you after state tax, whether the timing of other withdrawals affects that, and how it fits the rest of your plan, but that does not replace the numbers in your own return.
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Statute and sources
Governing citation: RSMo § 143.124 (Social Security retirement); § 143.125 (Social Security disability).
Read September 5, 2026.
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General information drawn from each state’s own published statutes and revenue-department guidance, not legal, tax or financial advice. Figures and exemption amounts are current as of the date in the quick answer, are set by state law, and can change by future legislation; any pending bill named on this page is not yet law. This page cannot see your own return, which governs. We are not a law firm, a tax adviser, or a fiduciary, and this is not personalized advice.