Seattle property tax calculator 2026
Seattle property tax is calculated from the assessed value determined by the King County Assessor. This calculator provides an estimated property tax based on the assessed value you enter and a combined local levy rate, recognizing that actual charges depend on the specific taxing districts assigned to each parcel.
Estimates only. Loan terms and approval depend on lender underwriting.
Many U.S. counties use multiple local taxing authorities (county, city, school district, special districts). Enter your combined local millage rate as shown on your annual property tax notice.
Estimated property tax
Enter the assessed value to see the estimated annual property tax.
How it works
In King County, property is assessed at market value for taxation purposes, and property tax is calculated using the assessed value. The general formula is assessed value multiplied by the applicable levy rate. Seattle properties are subject to multiple levies set by different taxing districts, including state, county, city, and other local jurisdictions. The total rate applied to a parcel depends on its specific tax code area.
Examples
If a property has an assessed value of 750,000 and the combined levy rate for its tax code area is 1.05%, the estimated annual property tax would be 750,000 × 0.0105, or 7,875. A different property in another taxing district combination may face a different total rate even with the same assessed value.
Limitations and important notes
This tool provides an estimated property tax and does not replicate parcel-specific levy calculations. King County contains numerous taxing districts, and the total levy rate varies by tax code area. Eligibility-based exemptions, such as senior or disability relief programs, are not automatically applied in this estimate. The actual tax bill issued by the county may differ from this calculation.
FAQs
Is Seattle property tax based on market value or assessed value?
Property tax is calculated from the assessed value as determined by the King County Assessor, which reflects market value for assessment purposes.
Are property tax rates the same across all of Seattle?
No. Rates vary depending on the combination of state, county, city, school, and other local taxing district levies assigned to each parcel.
What makes up the Seattle property tax rate?
The total rate includes levies from multiple taxing districts, such as the State of Washington, King County, the City of Seattle, and other local jurisdictions.
Does this calculator show my exact Seattle property tax bill?
No. It provides an estimated property tax based on assessed value and a combined rate input. Actual bills depend on parcel-specific levy assignments and any qualifying exemptions.
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Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.