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King County, Washington Property Taxes (2026)

King County homeowners pay a median property tax of $6,785/year on a median home value of $811,200 — an effective rate of 0.84%, which is below the national median of 1.02%. King County has a population of approximately 2,262,713.

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Effective Tax Rate

0.84%

Higher than the Washington median of 0.79%

Median Home Value

$811,200

Annual Tax Bill

$6,785

~$565/month

Est. Annual Savings

$1,018

If reduced by 15%

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King County, Washington Property Tax Calculator

Enter your address to instantly see if you're overpaying on property taxes. Our tool compares your assessed value against recent comparable sales in King County to estimate your potential savings.

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  • Uses real King County comparable sales data
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Average Annual Savings

$1,018

Estimated savings for King County homeowners

Property Tax Rates: King County vs. Washington vs. National

King County0.84%
Washington Median0.79%
National Median1.02%

Key stat: The effective property tax rate in King County, Washington is 0.84%, compared to the Washington median of 0.79% and the national median of 1.02%. (Source: U.S. Census Bureau, ACS 5-Year Estimates)

How King County Compares Across Washington

See where King County's tax metrics fall relative to all 39 Washington counties.

Tax Rate Distribution

Percentile distribution across all Washington counties

10th

1.00%

25th

1.00%

Median

0.79%

75th

1.00%

90th

1.00%

Home Value Distribution

Percentile distribution across all Washington counties

10th

$273,660

25th

$285,200

Median

$370,500

75th

$478,500

90th

$535,460

Tax Bill Distribution

Percentile distribution across all Washington counties

10th

$2,042

25th

$2,259

Median

$2,860

75th

$3,681

90th

$4,090

King County County Assessor Information

King County County Assessor

Assessing Authority

King County Assessor

Appeal Deadline

July 1 or 60 days after notice

Washington appeal filing deadline

State

Washington

How to appeal

Let TaxDrop handle it for you →

How to Appeal Your Property Taxes in King County

If you own property in King County, you have the legal right to appeal your assessed value. Here is the step-by-step process:

1

Review your assessment notice

Check the assessed value from the King County Assessor. Compare it to recent sales of similar homes in your area.

2

File your appeal before the deadline

The Washington deadline is July 1 or 60 days after notice. Missing this deadline means waiting until the next assessment year.

3

Gather supporting evidence

Compile recent comparable sales, photos of property condition issues, independent appraisals, or any factors that reduce your home's value.

4

Present your case

Attend a hearing or submit your evidence to the County Assessor. Present clear data showing your assessed value is too high.

5

Receive your decision

If successful, your assessed value and tax bill will be reduced. With a median bill of $6,785, even a 10-15% reduction means $679-$1018 in annual savings.

Skip the hassle — let TaxDrop handle it

TaxDrop's licensed consultants analyze your property, build your case with comparable sales data, and represent you through the entire appeal process. You pay nothing unless we save you $500 or more.

Start Your King County Appeal →Free Tax Rate Calculator

Property Tax Exemptions in Washington

Washington homeowners may qualify for exemptions that reduce their taxable value. Common exemptions include:

Homestead Exemption

Available to primary residence owners. Reduces the assessed value used to calculate your tax bill.

Senior/Over-65 Exemption

Additional exemption for homeowners age 65+. May include a tax ceiling that freezes your bill.

Disability Exemption

For homeowners with qualifying disabilities. Similar benefits to the over-65 exemption.

Veteran Exemption

Disabled veterans may receive partial or full exemptions depending on disability rating.

Frequently Asked Questions

What is the property tax rate in King County, Washington?
The median effective property tax rate in King County, Washington is 0.84%. On a home valued at $811,200, the median annual property tax bill is $6,785. Source: U.S. Census Bureau, ACS 2026.
How much are property taxes in King County?
The median annual property tax bill in King County is $6,785, which works out to approximately $565/month. This is based on the median home value of $811,200 and an effective tax rate of 0.84%.
How do I appeal my property taxes in King County?
To appeal your property taxes in King County, Washington, you need to file with the King County Assessor before the deadline of July 1 or 60 days after notice. You'll need evidence that your assessed value exceeds your property's market value, such as recent comparable sales. TaxDrop can handle this entire process for you — you pay nothing unless we save you $500 or more.
Is King County a high property tax area?
King County's effective tax rate of 0.84% is below the national median of 1.02%. It's also above the Washington median of 0.79%, making it one of the higher-taxed counties in the state.
What is the deadline to appeal property taxes in Washington?
The deadline to appeal property taxes in Washington is July 1 or 60 days after notice. It's important to file before this deadline — missing it means waiting until the next assessment cycle. TaxDrop monitors deadlines and files on your behalf to ensure you never miss the window.
Can TaxDrop help lower my King County property taxes?
Yes. TaxDrop helps homeowners in King County, Washington appeal their property tax assessments. We analyze your property, compare it against local comparable sales, and handle the entire appeal process. Our fee is 25% of your savings — and if we don't save you at least $500, you pay nothing.

Nearby Counties

Grant County

Rate: 0.82%

Tax bill: $2,268

Grays Harbor County

Rate: 0.87%

Tax bill: $2,441

Island County

Rate: 0.70%

Tax bill: $3,765

Jefferson County

Rate: 0.73%

Tax bill: $3,596

Kitsap County

Rate: 0.80%

Tax bill: $4,030

Kittitas County

Rate: 0.71%

Tax bill: $3,255

Klickitat County

Rate: 0.62%

Tax bill: $2,401

Lewis County

Rate: 0.71%

Tax bill: $2,433

← View all 39 Washington counties

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