How Washington property tax works
Property tax in Washington is charged annually as a percentage of your home's assessed value. The average effective rate is about 0.84%.
On a $350,000 home that works out to roughly $2,940 a year. Set locally and subject to statutory levy limits.
Effective rate means actual tax paid divided by market value, which is the fairest way to compare areas because assessment practices differ.
Why your bill may differ
Property tax is set locally — by counties, cities and school districts — so two homes of the same value in different parts of Washington can have very different bills.
Exemptions also matter. Homestead, senior and veteran exemptions can lower the taxable value of a primary residence, reducing the tax below this estimate.
Budgeting for property tax
Lenders usually collect property tax monthly into an escrow account and pay it on your behalf, which is why this calculator shows a monthly figure.
This is an average-rate estimate. For an exact bill, check your county assessor's rate and any exemptions you qualify for, and confirm with the Washington Department of Revenue (dor.wa.gov).
Frequently asked questions
What is the property tax rate in Washington?
The average effective property tax rate in Washington is about 0.84% of a home's value, though it varies by county.
How is Washington property tax calculated?
Multiply your home's assessed value by the effective rate. This calculator estimates it from the state average and shows annual and monthly figures.
Why is my property tax different from the estimate?
Rates are set locally and exemptions reduce taxable value, so your actual county rate and any homestead exemption can move the bill up or down.
Can I lower my property tax?
Possibly — apply for a homestead or other exemption you qualify for, and appeal your assessment if you believe the assessed value is too high.