Missouri Retirement Income Tax Guide 2026

Missouri retirees got real relief starting with tax year 2024: Senate Bill 190, signed by Governor Mike Parson in July 2023, eliminated the income-based phase-out that used to limit how much Social Security and public pension income Missouri residents could deduct. Before SB 190, only taxpayers under roughly $85,000 (single) or $100,000 (married) in adjusted gross income got the full deduction — everyone else saw it shrink or disappear. As of the 2026 tax year, that income test is gone for both Social Security and public pensions, according to the Missouri Department of Revenue.

What often gets missed, though, is that SB 190's full exemption applies only to public pensions (and Social Security) — not to private pensions, 401(k) plans, or IRA withdrawals. Those remain governed by an older, much narrower deduction that caps out at $6,000 per taxpayer and phases out once other income exceeds $25,000 (single) or $32,000 (married). A bill that would have extended full exemption to private pensions starting in 2026 died in the legislature in 2025, so this gap is still current law. This guide walks through exactly how each type of retirement income is taxed in Missouri for 2026, with worked examples showing how much the public-vs-private distinction actually costs a retiree. Run your own numbers against other states with the Retirement Income Tax by State Calculator.

Does Missouri Tax Social Security Benefits in 2026?

No. Missouri fully exempts Social Security and Social Security Disability (SSD) benefits from state income tax, and has done so with no income limit since tax year 2024. This follows Senate Bill 190, signed into law by Governor Mike Parson in July 2023, which eliminated the adjusted gross income test that previously capped the deduction at $85,000 (single/head of household) or $100,000 (married filing jointly).

To qualify, the Missouri Department of Revenue requires that the taxpayer be age 62 or older, or receiving Social Security disability benefits. There's one filing detail worth knowing: if a taxpayer is 62 through 64 (not yet 65), the "Age 62 through 64" box must be checked on Form MO-1040. According to the Department's 2025 Missouri Income Tax Reference Guide, failing to check that box means the deduction will be disallowed — a purely mechanical trap that has nothing to do with actual eligibility.

Does Missouri Tax Public Pensions in 2026?

Largely no — but with one cap worth understanding. SB 190 also removed the income limit on Missouri's public pension deduction starting in 2024. Public pensions (from any federal, state, or local government employer — not including military pensions, which are handled separately as a 100% subtraction under Form MO-A) can now be deducted regardless of the retiree's total income.

The deduction is not unlimited in dollar terms, though: it's capped at the maximum Social Security benefit amount allowed for that tax year, per taxpayer. For the 2025 tax year, the Missouri Department of Revenue set that ceiling at $47,633 per taxpayer — a figure that adjusts annually and is tied to the Social Security Administration's benefit formula. In practice, this cap is high enough that the large majority of public-sector retirees — teachers, state and local government employees, federal retirees — see their full pension income deducted. Retirees who claim both the Social Security deduction and the public pension deduction should also note that the pension deduction is reduced by the amount of Social Security deduction claimed, per the Department's guidance, to prevent double-counting against the same benefit ceiling.

Does Missouri Tax Private Pensions, 401(k), and IRA Withdrawals?

Yes, mostly. This is the detail that trips up a lot of retirees who assume Missouri's 2024 reform covers all retirement income — it doesn't. Private pensions (and, by extension, 401(k), 403(b), and traditional/Roth IRA withdrawals reported as pension-type income) remain governed by a much older deduction that SB 190 left untouched: a maximum $6,000 exemption per taxpayer, available only below these income limits, per the Department's official pension guidance:

• Single, head of household, or qualifying widow(er): $25,000
• Married filing combined: $32,000
• Married filing separately: $16,000

If income exceeds these thresholds, the $6,000 deduction is reduced dollar-for-dollar by the amount of the excess — meaning it disappears entirely once income exceeds the limit by $6,000 or more. For a single retiree, that means the private pension deduction is worth exactly $0 once other income (not counting the taxable portion of Social Security, which is excluded from this calculation) reaches $31,000. Given that most private pensions and 401(k)/IRA withdrawals of any meaningful size exceed that on their own, a large share of retirees living on private-sector retirement savings get no state deduction at all on that income — a sharp contrast to the unlimited public pension exemption.

There was a serious attempt to close this gap. House Bill 426, introduced in the Missouri legislature's 2025 regular session, proposed extending a full 100% exemption to private pension income starting with the 2026 tax year, matching the treatment public pensions already receive. The bill received a House committee "Do Pass" report in February 2025 but stalled afterward; the Missouri Senate's bill-tracking system marked it "Dead" as of May 16, 2025, after its last hearing in a Senate committee. It was never signed into law. As of the 2026 tax year, the $6,000-cap rule for private pensions remains current Missouri law — retirees and advisors should not assume the expanded exemption applies.

What Are Missouri's 2026 Income Tax Brackets and Standard Deduction?

Whatever portion of retirement income isn't exempted is taxed at Missouri's regular graduated rates. Missouri uses eight brackets, but because the bands are narrow, the top 4.7% rate applies to nearly all taxable income above roughly $9,436, per the Department's 2026 withholding tax formula:

The Missouri standard deduction mirrors the federal standard deduction. For 2026, that's $16,100 for single filers and married filing separately, $32,200 for married filing jointly, and $24,150 for head of household — with additional amounts for filers who are 65 or older or blind. There is no separate Missouri personal exemption.

Worked Examples: How Much Do Missouri Retirees Actually Pay in 2026?

These three profiles show how differently Missouri treats retirees depending on the source of their income — even at similar total dollar amounts.

Example 1 — Social-Security-only retiree. A single 68-year-old with $32,000 in annual Social Security benefits and no other income. The benefits are fully exempt from Missouri tax under SB 190, regardless of amount. Missouri state tax owed: $0.

Example 2 — Public-sector retiree (teacher pension + Social Security). A married couple, both over 65, with $40,000 in combined Social Security benefits and $45,000 from a state teacher's pension (a public pension). The Social Security is fully exempt. The $45,000 pension falls under the $47,633-per-taxpayer public pension cap, so it's fully deductible too. After both deductions, Missouri taxable income is effectively $0. Missouri state tax owed: $0.

Example 3 — Private-sector retiree (401(k)/IRA withdrawals + Social Security). A single 70-year-old with $25,000 in Social Security (fully exempt) and $40,000 in 401(k)/IRA withdrawals, treated as private retirement income. Because the $40,000 exceeds the $25,000 single-filer income limit for the private pension deduction by $15,000 — more than the $6,000 maximum deduction — the entire private pension deduction is phased out to $0. The full $40,000 is taxable. After the $16,100 standard deduction, taxable income is roughly $23,900, producing a Missouri tax bill of approximately $943 (using the 2026 bracket table above).

The gap between Examples 2 and 3 is the point: two retirees with comparable total income pay $0 and roughly $943 respectively, purely because one draws from a government pension and the other from a 401(k)/IRA. Had Example 3's $40,000 come from a public pension instead, it would also have been fully exempt.

How Does Missouri Compare to Kansas, Illinois, and Oklahoma for Retirees?

Missouri sits in the middle of the pack among its neighbors — generous on Social Security and public pensions, but noticeably less generous than some neighboring states on private retirement income.

Illinois is the clear standout for retirees with substantial private-sector savings — it places no cap or age test on any category of retirement income. Missouri's treatment of Social Security and public pensions is now just as generous as Illinois's or Kansas's, but its private pension and 401(k)/IRA rules are considerably tighter than either neighbor's, and tighter than Oklahoma's $10,000 exclusion once income is high enough to phase out the $6,000 deduction entirely.

How Do You Claim These Deductions on a Missouri Tax Return?

Claiming the Social Security, public pension, or private pension deduction requires Form MO-1040, the long-form Missouri individual income tax return — the short-form MO-1040A cannot be used if any of these deductions are claimed, per the Department of Revenue's return-selection guidance. The calculations themselves happen on Form MO-A, Part 3, which totals the public pension, private pension, and Social Security/Social Security disability deductions before that total carries over to Form MO-1040, Line 8.

Documentation matters here: retirees should keep Form(s) SSA-1099 (Social Security benefit statements) and 1099-R (pension and retirement account distribution statements) on hand, since the Missouri return relies on federal adjusted gross income as its starting point and the state deductions are computed as subtractions from that federal figure.