Travis Bunn

Founder, AppealDesk · Published March 1, 2026

How Much Can Property Taxes Increase in Missouri? 2026 Complete Guide

Updated July 2026

Does Missouri Have a Property Tax Cap?

The honest answer: no, not in the way most people mean the question. States like California and Florida cap how much an individual home's taxable value can rise each year. Missouri does not. If the assessor concludes your home's market value jumped 30% since the last reassessment, your assessed value can jump 30%. There is no percentage limit, no homestead cap, and no phase-in for large increases.

What Missouri has instead is a revenue restraint that operates one level up, on the taxing districts themselves. Your school district, fire district, library district, and county each set a levy, and state law forces those levies down when reassessment inflates the tax base too quickly. That mechanism, the Hancock Amendment, is the reason a 20% assessment increase usually does not translate into a 20% bill increase. But it protects the aggregate, not you personally. Individual owners whose values rose faster than their neighbors' still see outsized bill increases even after the rollback.

What Is the Hancock Amendment in Missouri?

The Hancock Amendment is an addition to the Missouri Constitution (Article X) that limits how much revenue governments can take without voter consent. For property taxes, it works together with a statute, RSMo 137.073, and the mechanics matter.

In a reassessment year, each taxing district adds up the new assessed value of all existing property within its boundaries. If that aggregate grew by more than the lesser of CPI inflation or 5%, the district must roll back its levy rate so that its revenue from existing property stays roughly at the prior year's level plus inflation. Reassessment gains above that line become rate cuts, not new revenue. In practice, published levy rollbacks of 1% to 4% are typical in reassessment years across Missouri districts.

The second half of Hancock is voter approval. A district that wants to raise its levy above its authorized ceiling cannot simply vote itself the increase; it has to put the question on the ballot. So the two levers that control Missouri tax bills are automatic rollbacks after reassessment and elections for anything beyond that.

What Hancock never examines is whether your individual assessment is correct. The rollback math uses the district's total. If your home was overvalued in the mass reassessment, the rollback applies the same discounted rate to an inflated number, and you overpay every year until the value is corrected.

How Often Do Property Taxes Go Up in Missouri?

Missouri reassesses real property every two years, in odd-numbered years (2025, 2027, and so on). That biennial cycle is why Missouri tax bills tend to move in steps rather than a smooth annual climb. In an even-numbered year, your assessed value generally holds steady unless you built an addition or the property changed in some other physical way. In an odd-numbered year, the assessor updates values to reflect the market, and that is when most owners see the increase, receive a reassessment notice, and, if they disagree, file an appeal.

Your bill can still shift in a non-reassessment year if voters in your district approve a new or increased levy, or if a bond issue changes debt-service rates. But the large movements almost always land in odd years.

Missouri Assessment Ratios: 19% Residential, 32% Commercial

Missouri does not tax the full market value of your home. Under RSMo 137.115, residential property is assessed at 19% of market value. Commercial property is assessed at 32% and agricultural at 12%. The levy is then applied to that assessed value, typically expressed as dollars per $100 of assessed valuation.

Run the arithmetic on a $300,000 house: 19% of $300,000 is $57,000 of assessed value. If the combined levies in your district total $6.00 per $100 of assessed value, the bill is $57,000 divided by 100, times $6.00, or $3,420. That levy figure is only an illustration; actual combined rates vary widely by county and school district, so pull the real rates from your county collector before budgeting.

The ratio also means every $10,000 of excess market value the assessor puts on your home adds $1,900 of assessed value, which at that same illustrative levy costs you $114 a year, every year, until it is corrected.

What Is Missouri's Property Tax Rate in 2026?

There is no single Missouri property tax rate. Your effective rate depends on which taxing districts overlap your parcel: county, school district, city, fire, library, ambulance, and others, each with its own levy. Two houses a mile apart can pay meaningfully different rates because they sit in different school or fire districts.

Because the state assesses residential property at 19% of market value, the effective rate on market value is always much lower than the nominal levy on assessed value. Statewide averages published by various research groups shift year to year and are computed on different bases, so treat any single number you see quoted online with caution. The reliable way to know your own rate is your most recent tax statement or your county collector's published levy tables, which list every district's rate that applies to your address.

One statewide quality check does exist: the State Tax Commission runs ratio studies requiring each county's median assessed values to fall within 90% to 110% of the Commission's own calculated values. That keeps counties honest in the aggregate, but like Hancock, it says nothing about whether your specific parcel is valued correctly.

Will My Property Taxes Go Up After I Buy a House in Missouri?

Not because of the purchase itself. In cap states like California, buying a home resets a capped value to market and the new owner's taxes jump. Missouri has no cap, so there is nothing to reset. The assessed value on the parcel carries forward until the next odd-year reassessment regardless of who owns it.

That cuts both ways. Your purchase price does not automatically become your assessed value, but at the next reassessment the assessor's model will value your home against current market data, and a recent sale in a rising market often lands a higher number. New construction and major improvements are added to the roll as they are completed, which is a separate mechanism from any cap reset. If your first reassessment notice after buying comes in above what you paid for the home in an arm's length sale, that is one of the strongest appeal fact patterns there is.

Missouri Senior Property Tax Freeze (SB 190) and Homestead Relief

Missouri has no general homestead exemption of the kind Texas or Florida homeowners know, where a fixed dollar amount comes off every primary residence's value. What it has instead, since 2023, is the most significant owner-level protection in the state: the senior property tax freeze credit created by SB 190 (RSMo 137.1050).

The freeze is a credit that locks an eligible senior's property tax bill at its base-year amount, so later reassessments and levy changes do not raise it. It is county opt-in, not statewide: each county commission decides whether to offer it, and roughly 85 of Missouri's 114 counties have adopted it as of 2026. SB 756, signed July 9, 2024, cleaned up the original law, clarifying eligibility at age 62 including pension-only retirees such as teachers, police, and firefighters, and simplifying county adoption. To qualify you must be the owner of record of your homestead and meet the age test. In most participating counties the application deadline for the 2026 tax year is June 30, and you apply through your county, so check your county collector or assessor's office for the local form and date.

Lower-income seniors and disabled homeowners should also look at the separate Missouri Property Tax Credit (the circuit breaker), a state income tax credit that refunds part of property taxes or rent paid. It is smaller than the freeze but is statewide and does not depend on county adoption.

Will Property Taxes Go Down in 2026? What Changed in 2025 and 2026

Property tax reform was one of the loudest issues in Jefferson City going into 2026, and the session ended in May 2026 with nothing passed. House Republicans could not agree on how broad a cap or relief package should be, and no statewide assessment cap, levy freeze, or new exemption was enacted. Lawmakers have said they intend to try again, but as of this writing the rules described in this guide are the rules: no assessment cap, Hancock rollbacks at the levy level, and the county-by-county senior freeze.

So will bills go down in 2026? For most owners, no. 2026 is an even year, so assessed values largely hold from the 2025 reassessment, and bills move only with levy changes. Where 2025 reassessment growth exceeded the Hancock trigger, districts rolled rates back, which softened but rarely reversed increases. Seniors in adopting counties who filed for the SB 190 freeze are the main group whose bills are actually pinned in place.

Frequently Asked Questions

How much can my assessed value increase in a Missouri reassessment?

There is no limit. Missouri law does not cap how much an individual home's assessed value can rise between reassessments. The Hancock Amendment forces levy rollbacks when a district's total base grows faster than the lesser of CPI or 5%, which restrains the average bill, but your own value can rise by whatever the assessor's market analysis supports. Your remedy for an excessive value is an appeal, not a cap.

How often is property reassessed in Missouri?

Every two years, in odd-numbered years. Reassessment notices go out in those years, and that is when most value changes and most appeals happen. Even-year values generally carry over unless the property physically changed.

When are Missouri property taxes due?

December 31. Missouri property taxes are paid in arrears, so the bill you pay at the end of 2026 covers the 2026 tax year. Bills typically arrive from county collectors in the fall, and payments after December 31 accrue penalties and interest.

Do my taxes reset when I buy a home in Missouri?

No. Missouri has no assessment cap, so there is no capped value to reset at sale. The existing assessed value stays on the parcel until the next odd-year reassessment, when the assessor revalues it against the market like every other home in the county.

What is the deadline to appeal my Missouri assessment?

The Board of Equalization deadline is the second Monday in July by statute, though filing windows vary by county and some open around May 1. A further appeal to the State Tax Commission is due by September 30 or 30 days after the Board's decision, whichever is later. Confirm dates with your county assessor, since a few counties set their own local schedules.

Related Resources

If your assessment looks high, the next step is the appeal itself: our guide on How to Appeal Property Taxes in Missouri walks the informal review, Board of Equalization, and State Tax Commission stages in detail. If you are weighing whether the effort pays, see Is It Worth Appealing Property Taxes?, and when you are ready to build your case, What Evidence Do I Need for an Appeal? covers the comparable sales and documentation that actually move a board.

This article provides general information about Missouri property tax laws as of July 2026. Tax laws change frequently, and county rules and deadlines vary. Consult your county assessor, county collector, or a tax professional for advice specific to your situation.