When are property taxes due in Washington County, Missouri?

Washington County property taxes are due December 31. This deadline applies to all counties in Missouri.

What is the penalty for late property tax payment in Washington County, Missouri?

The late payment penalty in Washington County is Up to 25% penalty first year.

How do I pay Washington County, Missouri property taxes?

You can pay Washington County property taxes via Online, mail, in-person.

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Washington County Property Tax Due Date

Missouri

2026 Property Tax Due Dates

Due Date

December 31

Full payment

Penalty: Up to 25% penalty first yearGrace period: None

Payment Methods

Online, Mail, In-Person

Washington County Treasurer

How to Pay

Online

Pay using credit card or e-check

By Mail

Mail check payable to Washington County Treasurer

In Person

Visit the Treasurer's office

Other Counties in Missouri

Adair Andrew Atchison Audrain Barry Barton Bates Benton

View all Missouri counties →

About Washington County

Washington County is a county located in the southeastern part of the U.S. state of Missouri. As of the 2020 United States census, the population was 23,514. The county seat and largest city is Potosi.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Washington

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Property Tax FAQ Tax Calendar

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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.