Missouri SB 190 Senior Freeze: A County-by-County Opt-In Under RSMo §137.1050, Plus the State Circuit Breaker (MO-PTC) for Lower-Income Seniors

Updated April 2026

Missouri operates two distinct senior property tax programs that coexist and serve different income levels. SB 190, signed in 2023 and codified at RSMo §137.1050, created a senior property tax freeze that locks an eligible senior's real property tax at the year-of-qualification level — but only in counties that have opted in by ordinance. As of the 2026 cycle, roughly 85 of Missouri's 114 counties have adopted, with implementation details (base-year selection, eligibility minutiae, application windows) varying by county. Separately, the older Missouri Property Tax Credit (MO-PTC, also called the Circuit Breaker) remains available statewide and provides a refundable income tax credit for low-income seniors and disabled persons whose property tax burden is high relative to income.

SB 190 Senior Freeze: How It Works When Your County Has Adopted

Eligibility (state floor; counties may add narrower local conditions):

Eligible for Social Security retirement benefits (which generally means age 62+ for most retirees, though SB 190 references SSA eligibility rather than a flat age).
Owner of the property and using it as a primary residence.
Personally liable for the property taxes on the homestead.
No state-level income cap. Some counties have layered their own income caps; check your county's implementing ordinance.

Mechanic: once approved, the senior's real property tax for that homestead is frozen at the year-of-qualification level. Subsequent reassessment-driven or rate-driven increases on the homestead don't flow through to the senior's out-of-pocket bill — the county absorbs the difference. If the senior moves to a new Missouri home in an adopting county, the freeze re-establishes at the new home's year-of-purchase tax level (not portability of the prior frozen amount, just re-qualification at current).

Application is filed annually in adopting counties, typically by a county-set deadline (often April or October depending on jurisdiction). Counties that adopted later in 2024 or 2025 may use slightly different base-year rules — confirm with your county collector or assessor.

Is your Missouri assessment fair before the freeze locks in?

The SB 190 freeze locks the property tax at the year of qualification. If your assessment was inflated when you froze, you locked in too high a base. An assessment review before initial qualification matters disproportionately under this structure.

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Missouri Property Tax Credit (Circuit Breaker / MO-PTC)

Distinct from SB 190, the MO-PTC is filed via the Missouri state income tax return (Form MO-PTC or as a credit on MO-1040P). Eligibility for the senior path:

Age 65+ (or 100% disabled veteran; or 60+ surviving spouse of a qualifying person).
Single filer income $30,000 or less. Married filer income $34,000 or less.
Property tax (or qualifying rent) was paid on the principal residence during the tax year.
Maximum credit: $750 (renters) or $1,100 (homeowners), depending on income.

The MO-PTC's low income caps mean it serves a narrower slice than SB 190. A senior with $40,000 of household income is above MO-PTC but may still qualify for SB 190 freeze in an adopting county. The two programs can both apply (PTC pays a state credit; SB 190 freezes the county/local tax bill itself).

Why Adoption Status Matters: Two Seniors, Same Profile, Different Outcomes

Because SB 190 is county-level opt-in, geography determines what relief is available:

A 67-year-old senior in St. Louis County (adopted): freeze applies; the county absorbs reassessment-driven increases. Apply via the County Collector.
A 67-year-old senior in a Missouri county that has not adopted: no freeze available. The MO-PTC is the only state-level senior-specific path, and only if income is under $30K single / $34K married.

Adoption status changes; counties that didn't adopt initially have continued to consider it through 2024 and 2025. Confirm current adoption status with your county collector before assuming the freeze does or doesn't apply.

Frequently Asked Questions

My Missouri county hasn't adopted SB 190. Is there anything I can do as a senior?

Two paths. First, check whether your income qualifies for the MO-PTC Circuit Breaker — caps are $30,000 single / $34,000 married, modest by national standards but real if you're below them. Second, contact your county council members and your state legislators; SB 190 adoption is a county-level political question, and counties have continued opting in through 2024 and 2025 in response to constituent pressure. Some counties that initially declined have reversed course. There's no statewide alternative to SB 190 for moderate-income seniors in non-adopting counties.

If I move to a different Missouri home, does my SB 190 freeze move with me?

The freeze itself doesn't port — but you can re-qualify at the new home if you remain eligible and the new county has also adopted SB 190. Re-qualification establishes a new base year at the new property's current tax level, not the prior home's frozen amount. So a senior who froze at $2,400 in 2024, then moves to a similar home in 2026 with $3,800 in property tax, re-establishes the freeze at $3,800 — not $2,400. The freeze prevents future increases at the new home but doesn't carry the savings from the old one.

Can I claim both the MO-PTC Circuit Breaker and the SB 190 freeze in Missouri?

Yes if you qualify for both. They operate at different levels of the property tax system: SB 190 freezes the local property tax bill itself (administered by the county collector); MO-PTC is a state income tax credit computed against actual property tax paid (administered through the state income tax return). For a senior with $25,000 income in an SB 190-adopted county, the SB 190 freeze caps the local bill, then the MO-PTC computes a credit on what was actually paid — both forms of relief stack. File the SB 190 application with your county and the MO-PTC with your state income tax return.