Missouri · St. Charles County · Local exemptions · Updated Oct 2026

St. Charles County, MO property tax exemptions (2026)

The property tax breaks that are set or run locally in St. Charles County, on top of Missouri’s statewide rules: what each is worth here, who qualifies, where to apply and the deadline.

What is different in St. Charles County

St. Charles County runs a Senior Real Estate Property Tax Relief program (the Missouri senior freeze, age 62+) that covers all local taxing jurisdictions on the bill (school, fire, ambulance districts, cities), not only the county share. Bond levies and the State Blind Pension are not frozen. Seniors apply or renew every year with the County Collector; the 2026 window was March 1 - July 6, 2026.

Apply at: St. Charles County Collector of Revenue
Phone: 636-949-7470
Local breaks: Senior Citizen Real Estate Property Tax Relief Program
Tax year: 2026

Where to apply in St. Charles County

St. Charles County Collector of Revenue

Phone: 636-949-7470
Address: 201 N. Second St., Suite 134, St. Charles, MO 63301

Official exemptions page

Other offices

St. Charles County Assessor – sets the assessed value (appeals)
Missouri Department of Revenue, Property Tax Credit – state program: MO-PTC circuit-breaker refund for seniors 65+ and disabled homeowners

Local exemptions in St. Charles County

Senior freeze or deferral

Senior Citizen Real Estate Property Tax Relief Program

A credit that cancels any increase in your real estate tax bill above your base-year bill (the bill in the year you first become eligible). Applies to all taxing jurisdictions in the county, except bonded-indebtedness levies and the State Blind Pension Fund.

Set by: county
Tax year: 2026
Who qualifies: St. Charles County resident at least 62 and living in the home (primary residence) as of January 1 of the tax year (Jan. 1, 2026 for 2026). Real estate only: mobile homes taxed as personal property do not qualify.
How to apply: Apply to the County Collector of Revenue in person, online, or by mail-in request during the application window; check status with the online lookup on the Collector's page.
Deadline: 2026 tax year: March 1 - July 6, 2026 (closed). Applicants who became eligible on Jan. 1, 2026 see no reduction on the 2026 bill (it is their base year).
Renewal: Every year (apply or renew annually), as the County Collector page says as of October 2026. Confirm with the Collector before the 2027 window.

Source: official page

State exemptions that also apply here

These breaks come from Missouri law. Their full rules, forms and deadlines are on the Missouri page.

Missouri Property Tax Credit (circuit breaker), Form MO-PTCA credit
Homestead Exemption for Former Prisoners of War with a Total Service-Connected DisabilityFull exemption
Senior Citizen Property Tax Freeze Credit (county option, age 62+)Where adopted, it freezes the county's (only where the local government offers it)

All Missouri property tax exemptions

By group in Missouri: Seniors · Veterans · Disability

Savings estimate for St. Charles County

Roughly what an exemption could save you a year: the value it takes off, times your tax rate.

Exemption

Value taken off ($)

Filled in when the exemption is a fixed dollar amount. You can change it.

Tax rate (%)

St. Charles County median effective rate: 1.06% (taxes paid as a share of home value). Use your own rate if you know it.

Enter a value and a tax rateChoose an exemption or type the value it takes off.

Median effective rate in St. Charles County: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, county figures as published by Tax Foundation. It is a county-wide middle value; rates differ by town and school district.

An estimate, not a bill. Nothing you type here is sent anywhere.

Eligibility finder for St. Charles County

Answer a few questions to see which property tax breaks may fit you. Nothing you type here is sent anywhere.

Do you own the home and live in it as your main home?

Your age, or the year you were born

Leave empty if you'd rather not say.

Are you a veteran?

Do you have a permanent disability?

Are you the surviving spouse of a veteran, service member or first responder?

Yearly household income ($)

Everyone in the home, before taxes. Optional: used only to compare with income limits.

Do you own and live in the home?Answer the first question to see results.

A first check, not a decision: only your county, city or town assessor decides. We read ages, ratings and income limits only where the official rule states them plainly; otherwise we show the rule for you to check.

Document checklist for St. Charles County

Pick the breaks you plan to apply for. You get a checklist of forms, documents, steps and deadlines to print or keep on your phone.

Questions about property tax exemptions in St. Charles County

What property tax exemptions are there in St. Charles County?

Where do I apply for a property tax exemption in St. Charles County?

St. Charles County Collector of Revenue Phone: 636-949-7470 Address: 201 N. Second St., Suite 134, St. Charles, MO 63301. Also: St. Charles County Assessor, which sets the assessed value (appeals). Also: Missouri Department of Revenue, Property Tax Credit, which state program: MO-PTC circuit-breaker refund for seniors 65+ and disabled homeowners.

When is the deadline to apply in St. Charles County?

Senior Citizen Real Estate Property Tax Relief Program: 2026 tax year: March 1 - July 6, 2026 (closed). Applicants who became eligible on Jan. 1, 2026 see no reduction on the 2026 bill (it is their base year).

Do I have to reapply every year in St. Charles County?

Senior Citizen Real Estate Property Tax Relief Program: Every year (apply or renew annually), as the County Collector page says as of October 2026. Confirm with the Collector before the 2027 window.

Do Missouri’s statewide exemptions apply in St. Charles County too?

Yes. The statewide breaks on our Missouri page apply here as well, for example Missouri Property Tax Credit (circuit breaker), Form MO-PTC, Homestead Exemption for Former Prisoners of War with a Total Service-Connected Disability and Senior Citizen Property Tax Freeze Credit (county option, age 62+). This page adds what St. Charles County sets or runs itself.

Good to know in St. Charles County

The program began in tax year 2024 and is not retroactive (St. Charles County Collector).
If your application was denied by an email dated after July 1, 2026, you have 10 business days to submit a corrected application (St. Charles County Collector).

Think your assessed value is too high? See how to appeal in St. Charles County.

Sources

St. Charles County Collector - Seniors Real Estate Property Tax Relief Program
RSMo 137.1050
Median effective tax rate for St. Charles County: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, county figures as published by Tax Foundation. The rate is property taxes paid divided by home value.

Last checked: Oct 2026.