Washington State Senior Property Tax Exemption

King County Assessor

Available Property Tax Relief

About This Program

Washington State program exempting qualifying seniors 61+ and persons with disabilities from a portion of property taxes. Income thresholds vary by county; in King County, incomes up to approximately $58,000 may qualify for partial relief.

Exemption amount varies by income level and assessed home value

Official program page checked live on 2026-06-17.

Data last verified 2026-06-09. How we verify our data.

Key Details

  • Partial property tax exemption for seniors 61+
  • Also available for persons with disabilities
  • Income limits apply (moderate income)
  • Reduces assessed value for tax calculation
  • Applications accepted year-round

How to Apply

Get free help applying Visit Official Program Page Track this program

(206) 296-3920

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Your application paperwork

Documents you will likely need

  • Your federal tax return for the year of the work (this benefit is claimed on your taxes, not through a separate application).
  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • Household income proof (recent pay stubs, last year's tax return, or benefit award letters for everyone in the home).
  • Proof of age (driver's license or birth certificate) if the program is age-based.
  • Documentation of disability (award letter or a physician's statement) if the program is disability-based.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Applications accepted year-round

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