The Missouri property tax cap is really two separate protections. The Hancock Amendment to the state constitution forces local taxing districts to roll back their tax rates when assessed property values grow faster than inflation, so a hot market doesn’t automatically mean a revenue windfall. A newer law, Senate Bill 190 (expanded by SB 756), lets counties freeze the actual tax bill of homeowners 62 and older so future reassessments don’t push it higher. A third program, the Property Tax Credit, sends cash back to low-income seniors and disabled residents. They work differently and have different eligibility rules, so the one that helps you depends on your age, income, and county.
How the Hancock Amendment Caps Revenue Growth
Article X, Section 22 of the Missouri Constitution is the broadest cap and it applies to everyone. When the total assessed value of existing property in a taxing district rises faster than inflation, the district has to lower its tax rate so it collects roughly the same amount of revenue as the prior year, adjusted for inflation.1Missouri Revisor of Statutes. Missouri Constitution Article X Section 22 New construction and improvements are excluded from the calculation, so a new subdivision in town doesn’t trigger a rollback for everyone else.
The inflation factor is the consumer price index or 5%, whichever is lower. In 2025, the applicable rate was 2.9%. The 5% ceiling is the key number: even in a high-inflation year, a taxing district cannot pull more than a 5% revenue increase from existing property without putting the question to voters.1Missouri Revisor of Statutes. Missouri Constitution Article X Section 22
One important limit on this limit: the Hancock Amendment caps the total revenue a district can collect, not what any one household owes. If your home’s value jumped more than the district average, you’ll pay a bigger share of that capped total, and your personal bill can still rise even when the district’s overall take is flat.
Senior Property Tax Freeze: Who Can Use It
Missouri’s senior freeze, codified at RSMo 137.1050, lets qualifying older homeowners lock their property tax bill so future reassessments don’t push it up.2Missouri Revisor of Statutes. Missouri Revised Statutes Section 137.1050 The program came out of Senate Bill 190 in 2023 and was broadened by Senate Bill 756, which simplified the age rule and widened who can participate.3Missouri Senate. Governor Signs Senator Tony Luetkemeyers Senior Property Tax Relief Expansion Bill
You qualify if you are:
- Age 62 or older. SB 190 originally tied eligibility to Social Security retirement benefits, but SB 756 replaced that with a flat age threshold, so teachers, police officers, firefighters, and others on pensions outside Social Security now qualify.4Missouri Senate. Missouri Senate Bill 756
- A Missouri resident using the home as your primary residence (your “homestead”).5Missouri Senate. Missouri Senate Bill 190
- An owner of record or holder of a legal interest in the property, and legally liable for the taxes.
- Claiming only one home. The freeze doesn’t apply to second homes or rentals.
There is no income limit on the freeze itself. That distinguishes it from the Property Tax Credit covered below.
Your County Has To Opt In
The freeze is not automatic statewide. Each county or city has to pass its own ordinance to turn the program on, and this is what trips most people up. As of mid-2025, there is no official statewide list of participating counties. Jackson, St. Louis, Clay, Platte, and St. Charles are among the larger counties that have adopted the program, but others have not, and some are still gathering signatures for a local referendum.6St. Charles County, MO. Seniors Real Estate Property Tax Relief Program Call your county collector’s office and ask directly before you plan around it.
What the Freeze Actually Locks In
The freeze does not lock your assessed value or your tax rate. It locks the dollar amount of your tax bill. Each year, the county calculates the difference between your current bill and your “base year” bill, then credits that difference back to you.7Buchanan County, MO. Senior Real Estate Property Tax Relief Program FAQs Reassessments still happen every odd year, and your assessed value can still climb on paper. You just don’t pay the increase on most levies.
The base year is the tax year immediately before the year you first become eligible and apply. If you turned 62 in 2025 and applied in 2025, your base year is 2024. If you waited until 2026, the base year becomes 2025. Delay costs you money, because a later base year means a higher starting bill is what gets frozen.8Clay County, MO. Senior Real Estate Property Tax Relief
The freeze has carve-outs. Tax levies that fund bond debt payments and the State of Missouri Blind Fund are excluded from the credit. And if voters approve a new tax or raise an existing levy, that increase shows up on your bill even with the freeze in place.8Clay County, MO. Senior Real Estate Property Tax Relief The freeze protects you from reassessment-driven increases on existing levies, not from every possible tax change.
How To Apply for the Freeze
In most participating counties the application window runs from March 1 through June 30, though exact deadlines vary.6St. Charles County, MO. Seniors Real Estate Property Tax Relief Program Contact your county collector’s or clerk’s office for the form and filing instructions. Some counties accept online applications; others require paper filings by mail or in person.
Gather:
- Proof of age, such as a driver’s license, birth certificate, passport, or military service record.9Cole County, MO. Senior Real Estate Property Tax Freeze
- Proof of residency, such as a Missouri driver’s license, voter registration card, or state ID matching the property address.
- The parcel identification number from your annual property tax statement.
Approval usually takes several weeks. Most counties require an annual renewal to confirm you still live there and still qualify. Cole County, for instance, mails renewal forms with a June 30 deadline.9Cole County, MO. Senior Real Estate Property Tax Freeze If you sell or move to a different primary residence, the freeze ends. A new application at a new address resets your base year.
The Property Tax Credit for Low-Income Seniors and Disabled Residents
Separate from the freeze, Missouri offers a refundable Property Tax Credit (sometimes called the circuit breaker) for seniors 65 and older and residents who are 100% disabled. This one has income limits and pays you back directly rather than freezing future bills. The maximum credit is $1,100 for homeowners who owned and occupied their home all year, or $750 for renters.10Missouri Department of Revenue. Property Tax Credit
Income ceilings depend on filing status and whether you own or rent:
- Homeowners: $30,000 or less (single) or $34,000 or less (married filing combined).
- Renters: $27,200 or less (single) or $29,200 or less (married filing combined).11Missouri Department of Revenue. Property Tax Credit Claim FAQs
“Household income” for this purpose includes Social Security benefits, pensions, public assistance, and all other income sources, which catches some people off guard because Social Security is only partially taxable on federal returns.
Claim the credit by filing Form MO-PTC with the Missouri Department of Revenue. The 2025 tax year claim is due April 15, 2026, and you can file up to three years after the due date and still receive the credit.12Missouri Department of Revenue. Property Tax Credit Claim Instructions If you qualify for both the senior freeze and this credit, you can use both. They don’t cancel each other out.
Appealing an Assessment the Caps Won’t Reach
Neither the Hancock Amendment nor the senior freeze stops the assessor from raising your property’s market value in the first place. Missouri taxes residential property at 19% of fair market value, and real property is reassessed every odd-numbered year as of January 1.13Jackson County, MO. FAQs – Assessment If you think your assessment is wrong, start with an informal review at your county assessor’s office, where you can point out errors in the property record or request a field inspection. These informal reviews typically happen in April and May after change-of-assessment notices go out.
If that doesn’t resolve things, appeal to your county’s Board of Equalization, which meets in July. Appeals must be filed by the second Monday of July. The board issues a written decision, and you can escalate to the Missouri State Tax Commission by September 30 or within 30 days of the board’s decision, whichever is later. The Tax Commission process is more formal and may require a certified appraisal. Commercial property and properties held in trust typically require attorney representation at this stage.
Getting your assessed value reduced helps regardless of which cap applies. A lower assessment reduces your base year amount if you’re applying for the freeze, and it reduces your share of what the district collects under the Hancock framework.