RealCostIQ

Property Tax Guide

Property Tax in Washington (2026): Rates, Exemptions, and Real Numbers

Washington's effective property tax rate is 0.75% — #25 nationally. On the state median of $611,301, that's $4,585/year or $382/month. Rates vary sharply by county: from 0.64% in Ferry County to 0.88% in King County.

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Washington Property Tax Rates by County

Highest and lowest effective rates within Washington

Highest rate

0.88%

King County

$5,379/yr on median-priced home

Lowest rate

0.64%

Ferry County

$3,912/yr on median-priced home

County rate spread

Ferry County
King County
0.64%0.75% statewide avg0.88%

Property Tax Calculator — Washington

Pre-loaded with Washington's 0.75% effective rate and $611,301 median price

Property Tax Estimator

Washington rate pre-loaded

$
0.10%3.50%

Monthly Escrow

$382/mo

added to your mortgage payment

Annual property tax$4,585
10-year total$45,848
30-year total$137,543

Estimate based on effective rate. Actual bills vary by county and assessment.

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Property Tax by City in Washington

Annual and monthly property tax by city, based on local median prices and the statewide effective rate

Estimated property tax — Washington cities

CityMedian PriceAnnual TaxMonthly% of P&I
Bellevue$1,200,000$9,000$750/mo12%
Seattle$848,000$6,360$530/mo12%
Tacoma$510,000$3,825$319/mo13%
Olympia$485,000$3,638$303/mo12%
Spokane$404,000$3,030$253/mo13%
Source: Tax Foundation Property Taxes by State 2024 — estimated at 0.75% effective rate

Washington Homestead Exemption

No statewide homestead exemption in Washington

Washington does not offer a statewide homestead exemption. Check with your county assessor for local relief programs.

How Washington Assesses Property Values

Assessment cycle: Annual reassessment to 100% of market value by county assessors

Assessment cycle

Washington reassesses property on a annual reassessment to 100% of market value by county assessors schedule. Your assessed value changes on this cycle, so your tax bill can increase even if you haven't made improvements.

Assessed value vs. market value

Some states assess at a fraction of market value. Washington's effective rate of 0.75% is calculated on market value. If you paid $611,301, your starting assessed value is approximately that amount.

How to appeal

If your assessment is higher than comparable sales in your area, you can appeal. File with your county Board of Assessment Appeals within the deadline on your notice (typically 30-90 days). Bring 3-5 recent comparable sales ("comps") pulled from Zillow or your county recorder. The process is free.

What drives reassessment

Triggers include your purchase price being recorded at county, permitted renovation work, and periodic mass appraisals. New construction is always assessed on completion.

Property Tax's Impact on Your True Monthly Cost

On a $611,301 home in Washington

ComponentMonthly
Principal & Interest$3,085
Property Tax (0.75%)$382
Homeowners Insurance$146
Maintenance Reserve$764
Utilities$313
True monthly total$4,690

Property tax represents 8% of the true monthly cost in Washington.

Mortgage Calculator Including Property Tax — Washington

See your full PITI (principal, interest, taxes, insurance) payment

Mortgage Estimator

Washington rates pre-loaded

$
3%50%
%

Monthly Payment (P&I)

$3,059

principal & interest only

Loan amount$489,041
Est. property tax$509/mo
Est. total with tax$3,568/mo
Total interest (30 yr)$612,192

Estimate only — excludes insurance, PMI, HOA.

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How Washington's Property Tax Affects Affordability

$382/month in property tax reduces the home price you can afford. Use the affordability calculator to see the real impact.

Mortgage Affordability Calculator

See what home price you can actually afford after factoring in Washington's $382/month property tax burden.

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Property Tax After Refinancing in Washington

Refinancing changes your P&I but not your property tax. If your home was reassessed at a higher value, your tax bill increases regardless of your rate.

Mortgage Refinance Calculator

See if refinancing saves money after accounting for Washington's property taxes — pre-loaded with the $611,301 median home value at 6.4%.

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Frequently Asked Questions

What is the property tax rate in Washington?
Washington's effective property tax rate is 0.75%, ranking #25 nationally. The median annual property tax bill is $4,585 ($382/month). Rates range from 0.64% in Ferry County to 0.88% in King County. Source: Tax Foundation Property Taxes by State 2024.
Does Washington have a homestead exemption?
Washington does not have a statewide homestead exemption. Some counties may offer local relief programs — check with your county assessor's office.
How often is property reassessed in Washington?
Washington reassesses property on a annual reassessment to 100% of market value by county assessors basis. When your property is reassessed, your tax bill changes based on the new assessed value multiplied by the applicable rate. If you believe your assessment is too high, you can appeal — most counties allow 30-90 days after receiving your assessment notice.
How is property tax calculated in Washington?
Property tax = Assessed Value × Mill Rate (or effective rate). In Washington, the effective rate is 0.75% of market value. On a $611,301 home: $611,301 × 0.75% = $4,585/year. Assessments may use a fraction of market value — the effective rate accounts for this.
Can I appeal my property tax assessment in Washington?
Yes. If your assessed value is higher than comparable sales in your area, you can file an appeal with your county assessment board. Steps: (1) Get your assessment notice, (2) Research comparable recent sales, (3) File an appeal by the deadline (typically 30-90 days from assessment notice). Studies show 20-40% of appeals result in a reduction. The process is free and you represent yourself — no attorney required.
Are property taxes included in my mortgage payment in Washington?
Most lenders require an escrow account that collects $382/month ($4,585/year ÷ 12) along with your mortgage payment, then pays the county on your behalf. If your loan-to-value is below 80%, you may be able to opt out of escrow and pay taxes directly. Note: if your assessed value rises, your escrow payment adjusts and your total monthly cost increases.
What Washington counties have the highest and lowest property taxes?
Washington's highest effective rate is in King County at 0.88%. The lowest is Ferry County at 0.64%. That's a 0.24% spread — on a $611,301 home, the difference is $1,467/year.

Related Calculators

Data Sources

  1. 1.Tax Foundation Property Taxes by State 2024
  2. 2.Zillow Home Value Index, May 2026
  3. 3.Freddie Mac PMMS, May 2026

Note: These calculations are for educational purposes — always consult a licensed professional before making financial decisions.

Data shown for Washington is sourced from the references above and updated periodically. All figures are estimates based on statewide medians and averages — actual costs vary by county, property type, lender, and individual circumstances. This content is for informational purposes only and does not constitute financial, tax, or legal advice. Consult a licensed professional before making real estate or financial decisions.