Property tax estimate

Washington Property Tax Calculator

Estimate annual and monthly property taxes in Washingtonusing the state's average effective property tax rate of 0.87%. Enter a home value below to see an instant estimate — free and with no sign-up.

Last updated 2026-05-31

Average property tax rate: 0.87%.

Home value

Washington has no state income tax; property taxes are subject to statutory levy limits that constrain annual growth.

Annual estimate

$4,350

Monthly estimate

$363

How to calculate property taxes in Washington

To estimate property taxes in Washington, multiply the home value by the local property tax rate. This page applies the state average effective rate of 0.87%, so a property valued at $500,000 would have an estimated annual property tax of $4,350.

Washington has no state income tax; property taxes are subject to statutory levy limits that constrain annual growth.

Actual tax bills can include county, city, school district, exemption, and assessment rules, so investors should verify the final number with the local assessor before closing.

Comparing returns across markets? Use the cap rate calculator and cash-on-cash return calculator, which let you include property taxes as an operating expense.

Washington property tax FAQ

What is the average property tax rate in Washington?

The average effective property tax rate in Washington is about 0.87%, which is below the U.S. average of roughly 1.07%. Effective rate means annual tax divided by market value; your local rate may differ by county and city.

How much is property tax on a $400,000 home in Washington?

Using Washington's average effective rate of 0.87%, a $400,000 home owes about $3,480 per year in property tax, or roughly $290 per month. Actual bills vary with local rates and exemptions.

How do I calculate property tax in Washington?

Multiply your home's value by the local property tax rate. This calculator applies Washington's average effective rate of 0.87%, but you should confirm the exact county, city, and school district rates and any available exemptions with your local assessor.

This estimate uses Washington's average effective property tax rate and is for educational purposes only — not tax advice. Confirm your exact rate and exemptions with your county assessor.