The average effective property tax rate in Washington is 0.81% of a home's value per year. On a Washington home worth $600,000, that is about $4,860 in property tax a year, or $405 a month.
Estimate using Washington's average effective rate. Your county's exact rate may differ — check your local assessor. See the full Washington mortgage calculator for a complete PITI payment.
Property tax in Washington is a local tax based on the assessed value of your home and land. The average effective rate — the tax actually paid as a share of market value — is about 0.81% statewide, though the real figure depends on your county, school district and any special levies. On the median Washington home of roughly $600,000, that works out to about $4,860 a year. Most homeowners pay it monthly through an escrow account bundled into their mortgage payment.
Multiply your home's value by the effective rate. For example, a $600,000 home at 0.81% owes 600,000 × 0.81% = $4,860 per year. Enter your own home value above to get a personalised estimate, then confirm the exact local millage with your county assessor's office for budgeting.
Washington's 0.81% effective rate sits close to the US average of about 1.1%, so the bill scales fairly predictably with home value. The table below estimates the annual and monthly bill at Washington's 0.81% average effective rate across common home values.
| Home value | Annual property tax | Monthly |
|---|---|---|
| $200,000 | $1,620 | $135 |
| $350,000 | $2,835 | $236 |
| $500,000 | $4,050 | $338 |
| $750,000 | $6,075 | $506 |
| $1,000,000 | $8,100 | $675 |
Estimates at the statewide average effective rate; your county's millage, exemptions (such as a homestead exemption), and assessment ratio will change the exact figure.
Property tax is one piece of the picture. See your full housing cost with the Washington mortgage calculator, your take-home pay with the Washington income tax calculator, and local Washington sales tax.
Washington's average effective property tax rate is about 0.81% of the home's market value per year. Your exact rate depends on your county, city and local levies.
At Washington's average rate of 0.81%, a $600,000 home owes roughly $4,860 a year (about $405 a month). Use the calculator above for your own home value.
Property tax = assessed home value × the local tax rate. Enter your home value above and we apply Washington's average effective rate; check your county assessor for the exact local millage.
Due dates vary by county — many bill annually or semi-annually, and lenders often collect it monthly through an escrow account alongside your mortgage payment.