Washington's property tax rate and how it's calculated

Washington State has no state income tax, but it does tax real property. Your property tax bill is the assessed value of your home or land multiplied by the tax rate set by your county and local taxing districts. The statewide average effective tax rate is around 0.84 to 0.94 percent of home value, though this varies significantly by county.

The assessed value is not the same as what you paid for the property or what it would sell for today. The county assessor determines assessed value, and in Washington it cannot increase more than 1 percent per year unless the property changes ownership or you make major improvements. This means two identical homes on the same street can have very different assessed values depending on when they were last sold.

Your actual tax bill comes from multiplying the assessed value by the combined tax rate. That rate includes the county levy, school district levy, city levy (if you live in a city), and any special district levies for fire, library, or other services. Each district sets its own rate, so the total varies by location.

Key Takeaways

  • Washington property tax rates range from about 0.7 to 1.1 percent of assessed value depending on your county and which taxing districts serve your address.
  • Assessed value increases by a maximum of 1 percent per year unless the property sells or you add significant improvements, which keeps older homeowners' bills lower than newer ones in the same area.
  • Your bill includes levies from the county, school district, city, and any special districts, each with its own rate.
  • King County (Seattle area) and Pierce County (Tacoma area) have some of the highest rates in the state, while rural counties tend to be lower.
  • You can find your specific assessed value and tax rate on your county assessor's website or your property tax statement.

How county and local levies affect your total bill

The county assessor sets the assessed value, but the county commissioners, school boards, and city councils set the tax rates. Each body votes on how much money it needs and divides that by the total assessed value in its district to arrive at a rate. This means your neighbors in the next county could pay significantly more or less even if their homes are worth the same.

School districts typically account for the largest share of your property tax bill—often 40 to 50 percent. County government, cities, and special districts (fire, library, parks) make up the rest. A homeowner in a well-funded school district with an active city government will pay more than one in a rural area with a smaller school system, even if the homes have the same assessed value.

Washington allows voters to approve temporary tax increases called levies. A school levy or fire district levy appears on the ballot, and if voters approve it, that district's rate goes up for a set number of years. These are separate from the base rate and are not permanent.

Differences between Washington counties

King County, which includes Seattle, has an effective rate around 0.95 percent. Pierce County (Tacoma) runs about 0.92 percent. Snohomish County (north of Seattle) is roughly 0.88 percent. Rural counties like Ferry, Garfield, and Asotin are closer to 0.70 percent. The difference between the highest and lowest county is meaningful: a $500,000 home assessed at $500,000 would cost about $4,750 per year in King County but $3,500 in a rural county.

These differences reflect local spending priorities. Urban counties with larger school systems, more city services, and more special districts tend to have higher rates. Rural counties with smaller populations and fewer services have lower rates. Over time, rates can shift as districts vote on new levies or as population changes.

Your specific address matters more than the county alone. A home in an unincorporated area of King County pays county and school district levies but no city levy. The same home inside Seattle city limits would also pay the city's rate, raising the total. Special districts add another layer—if your address is in a fire district that recently passed a levy, your rate goes up.

When your assessed value changes

The 1 percent annual cap on assessed value increases means your bill grows slowly even if your home's market value rises sharply. If you bought your home for $400,000 and it is now worth $600,000, your assessed value might only be $420,000 or $430,000 depending on how many years have passed. Your tax bill reflects the lower assessed value, not the current market value.

This changes the moment you sell. The new owner's assessed value resets to the sale price (or the county's estimate of market value if the sale price seems wrong). This is called a revaluation on sale. A buyer paying $600,000 for that same home will have an assessed value of $600,000, and their tax bill will jump significantly compared to the previous owner's.

Major improvements also trigger a revaluation. If you add a room, finish a basement, or replace the roof, the assessor may increase the assessed value to reflect the improvement. Routine maintenance like painting or replacing windows does not count. You can appeal an assessed value if you believe it is wrong, and the county assessor's office has a process for that.

How to find your property tax rate and bill

Your county assessor's website has a search tool where you can enter your address and see the assessed value, the tax rate breakdown by district, and sometimes an estimate of your annual bill. The assessor's office also mails a property tax statement each year showing what you owe and when it is due. Payments are typically due in April and October, though some counties use different schedules.

If you do not have your statement or cannot find the assessor's website, call your county assessor's office directly. They can tell you the assessed value, the current rate, and your total bill. Some counties also offer online portals where you can view your account and make payments.

Your real estate agent or title company can also provide this information when you are buying a home. They often include a property tax estimate in the closing documents so you know what to expect in future years.

Exemptions and deferrals that lower your bill

Washington offers a homestead property tax exemption that reduces the assessed value for owner-occupied homes. The exemption applies to the first $250,000 of assessed value for most homeowners, meaning you only pay tax on the amount above that threshold. This significantly lowers the bill for homes under $250,000 in assessed value and provides some relief for higher-value homes.

You must file for the exemption with your county assessor—it does not happen automatically. The important date is typically in April, and you need to prove you own the home and live in it as your primary residence. Once approved, the exemption continues each year unless your situation changes.

Washington also has a property tax deferral program for homeowners age 61 or older, or those who are disabled or veterans. If you meet the income limit (which varies by county), you can defer paying property tax until the home is sold or passes to an heir. The state places a lien on the property to recover the deferred taxes, but you do not have to pay while you live there. This program requires a separate process to the Department of Revenue.

What happens if you do not pay

Property tax bills are due on specific dates set by your county. If you miss the important date, you owe a penalty and interest. The penalty is typically 5 percent of the unpaid amount, and interest accrues monthly. If you remain delinquent for three years, the county can foreclose on the property and sell it to recover the debt.

If you are struggling to pay, contact your county treasurer's office before the important date. Some counties offer payment plans or can discuss your options. Waiting until after the important date makes the situation worse because penalties and interest add up quickly.

Frequently Asked Questions

Is Washington property tax deductible on my federal income tax return?

Yes, property taxes are deductible on your federal return if you itemize deductions. However, the deduction is capped at $10,000 per year for state and local taxes combined (including income tax, sales tax, and property tax). Since Washington has no state income tax, your property tax deduction counts toward that $10,000 limit.

Can I appeal my assessed value if I think it is too high?

Yes. Each county has a process to appeal the assessed value, usually through a board of equalization or similar body. You typically have 30 days after receiving your assessment notice to file. Bring evidence like recent appraisals, comparable sales, or photos of needed repairs. The county assessor's office can explain the process for your specific county.

Do I pay property tax on land I own but do not build on?

Yes. Vacant land is assessed and taxed the same way as improved property. The assessed value is based on the land's market value, not on what you paid for it. If you own raw land, you still receive a tax bill and must pay by the important date.

What is the difference between assessed value and market value?

Market value is what a home would sell for today. Assessed value is what the county uses to calculate your tax bill, and it is capped at a 1 percent annual increase unless the property sells. For older homes, assessed value is often much lower than market value. For recently purchased homes, they are usually the same.

Do I have to pay property tax if I own my home outright with no mortgage?

Yes. Property tax is owed by the owner regardless of whether there is a mortgage. If you have a mortgage, your lender may collect property tax as part of your monthly payment and pay it on your behalf, but you are still legally responsible for it.