Washington state enjoys a relatively low statewide effective property tax rate of 0.75%, kept in check by strict constitutional limits. All property is assessed at 100% of fair market value and revalued annually. However, Washington’s unique statutory “levy lid” restricts local taxing districts from increasing their total regular tax revenue budget by more than 1% per year (plus new construction), protecting homeowners from runaway property tax bills (est., Tax Foundation 2026 / U.S. Census ACS 2023).
Because Washington State does not levy a personal income tax, property taxes serve as a crucial funding mechanism for local governments, schools, and fire districts. Despite this reliance, Washington’s statewide effective property tax rate is just 0.75%, keeping it well below the national average of 0.90%. Due to the state’s booming real estate market, median home values are high (often exceeding $500,000 in major metros), which generates substantial tax revenue without the need for exorbitant millage rates.
The 100% Assessment Ratio and Revaluation Cycle
The Washington Department of Revenue oversees property taxation, but local county assessors perform the actual valuations. By law, all real property in Washington must be assessed at 100% of its true and fair market value. Unlike states with long, multi-year gaps between assessments, Washington law requires all property to be revalued annually.
To ensure accuracy, county assessors must physically inspect every property at least once every six years. During the years between physical inspections, the assessor adjusts the property’s value using a statistical model based on recent sales data in the neighborhood. Because valuations are updated every year, homeowners avoid the “sticker shock” of massive, multi-year tax hikes that plague other states.
Washington statewide effective rate. On a $500,000 home, expect approximately $3,750 per year at the statewide average. Actual bills depend heavily on voter-approved school district levies (est., Tax Foundation 2026 / Census ACS 2023).
| Home Value | Annual Tax (est.) | Monthly Payment | vs. U.S. Average |
|---|---|---|---|
| $350,000 | $2,625 | $218 | -$525 below avg. |
| $500,000 | $3,750 | $312 | -$750 below avg. |
| $750,000 | $5,625 | $468 | -$1,125 below avg. |
| $1,000,000 | $7,500 | $625 | -$1,500 below avg. |
| $1,500,000 | $11,250 | $937 | -$2,250 below avg. |
Estimates use 0.75% statewide effective rate. U.S. average uses 0.90%. Source: est., Tax Foundation / Census ACS 2023.
The 1% Constitutional Limit and Statutory Levy Lid
Washington homeowners are protected from out-of-control property tax hikes by two very specific, overlapping caps:
The Constitutional 1% Limit ($10 Limit): The Washington State Constitution dictates that the sum of all “regular” (non-voted) property tax levies applied to a piece of property cannot exceed 1% of its true and fair market value. In tax terms, this means the aggregate rate of all regular taxing districts cannot exceed $10 per $1,000 of assessed value. Note that voter-approved special levies (like school bonds or emergency fire levies) are exempt from this 1% cap, which is why effective rates can sometimes exceed 1% in certain jurisdictions.
The Statutory 101% Levy Lid: This is a budget cap placed on the local government, not the individual homeowner. A taxing district (like a county or a library district) is legally prohibited from increasing its total regular property tax revenue budget by more than 1% over the previous year, plus an allowance for new construction. Therefore, if property values in a county jump by 15%, the local government must mathematically lower the property tax rate so that their total revenue only grows by 1%. This mechanism ensures that a hot real estate market does not result in an automatic revenue windfall for the government at the expense of taxpayers.
Senior and Disabled Property Tax Exemptions
Washington offers a robust Property Tax Exemption for Senior Citizens and Disabled Persons, significantly expanded by HB 1355 for the 2024-2026 tax years. Rather than a flat statewide income limit, the state now calculates income thresholds based on the median household income of the specific county.
- Eligibility: You must be at least 61 years old by December 31 of the year before the tax is due, OR retired because of a disability, OR a veteran with an 80% or total service-connected disability rating.
- Residency: You must own the home and occupy it as your primary residence for more than six months of the calendar year.
- Income Limits: The program freezes the assessed value of the home and exempts the homeowner from all excess (voted) levies. For the lowest income bracket, it can exempt the homeowner from a portion of regular levies as well. Because thresholds are county-specific, a homeowner in King County can earn up to $84,000 and still qualify for relief, while a homeowner in a rural county might face a lower limit (e.g., $45,000).
Applications must be submitted to the local county assessor’s office. If your income has recently dropped (e.g., due to retirement), you can apply for the exemption based on your estimated current-year income.
Major County Tax Rates in Washington
Because the 101% Levy Lid forces tax rates down as property values rise, highly populated and wealthy counties in the Seattle metro area often feature lower effective tax rates than rural counties. King, Pierce, and Snohomish counties dominate the state’s population and carry effective rates hovering between 0.77% and 0.90%.
Conversely, less populated areas like Yakima and Benton counties often require higher effective tax rates (around 0.95%) to generate sufficient revenue to fund basic county services and schools against a lower median property value base.
| County | Effective Rate | Annual Tax on $500,000 Home | Notes |
|---|---|---|---|
| King County | 0.83% | $4,150 | Most populous (Seattle); very high property values suppress rates. |
| Pierce County | 0.90% | $4,500 | Includes Tacoma; higher rates to support school levies. |
| Snohomish County | 0.77% | $3,850 | Includes Everett; tracks closely with state average. |
| Spokane County | 0.83% | $4,150 | Largest Eastern WA county; aligns perfectly with King County rate. |
| Clark County | 0.85% | $4,250 | Suburban Portland, OR area (Vancouver, WA). |
| Thurston County | 0.81% | $4,050 | Includes Olympia (State Capital). |
| Kitsap County | 0.88% | $4,400 | Bremerton/Silverdale area. |
| Yakima County | 0.95% | $4,750 | Higher effective rate driven by lower property valuations. |
| Whatcom County | 0.70% | $3,500 | Includes Bellingham; lowest effective rate in top 10. |
| Benton County | 0.95% | $4,750 | Tri-Cities area; higher effective burden on homeowners. |
Disclaimer and Methodology
This calculator provides estimates for planning purposes only, based on effective property tax rates (actual median taxes paid divided by median home values). By law, Washington state assessors must value real property at 100% of its true and fair market value. Because overlapping taxing districts (city, county, school, fire, library) change every year, and because the 101% Levy Lid forces local rates to fluctuate, this calculator uses historical effective rates to give you a highly realistic estimate of actual homeowner burden.
What this calculator does not account for:
- Voter-approved, one-time special levies (such as school construction bonds or emergency medical services levies), which are exempt from the 1% constitutional cap and can spike a tax bill for a few years.
- The difference between your home’s purchase price and the Assessor’s annual statistical revaluation.
- New construction on your property, which is added to the tax rolls outside of the 1% revenue cap limitation.
How to get an accurate estimate:
- Look up your precise “Assessed Value” using your County Assessor’s online parcel search tool.
- Find the specific Levy Rate for your Tax Code Area (TCA) and multiply it by your Assessed Value (divided by $1,000).
- If you are a senior citizen or disabled veteran, contact your County Assessor immediately to apply for the newly expanded property tax exemption based on your local county income limits.
Data sources: Statewide effective rate and county effective rates derived from U.S. Census Bureau ACS 2023 and SmartAsset aggregations. Statutory rules and constitutional caps from the Washington Department of Revenue.
Return to the National Property Tax Calculator to compare Washington with other states.