WSACA Tools

Free tools, built once and shared across all 39 counties.

A growing collection of open-source tools developed by the Washington State Association of County Assessors. Modern infrastructure should be a shared resource — not something every county office has to build independently.

About

Washington's property tax exemption program for senior citizens and people with disabilities expanded substantially in tax year 2027 under Engrossed Substitute Senate Bill 6162. New thresholds. New deductions. A consolidated state school levy. Larger benefits at every qualification level.

WSACA built this screening tool so that any of Washington's 39 county assessor offices can hand a homeowner a clear, county-specific answer to the question: do I qualify, and what would I save? No login, no data collection, no installation. Just a tool that runs in any browser and points the applicant toward their local county assessor for the official determination.

The screening tool is the first WSACA tool — more will follow. Property tax appeal flowcharts. Deferral program estimators. Whatever the assessor community needs and decides to build together. All free, all open source, all here.

Property Tax Exemption Screening Tool

Two versions are available. The current version reflects feedback from member counties and the Department of Revenue. The original version is preserved for reference.

Version 2 · Current

The recommended version

A guided screening tool that helps homeowners check whether they may qualify for the expanded 2027 property tax exemption program in their county. Walks the user from county selection through eligibility, household composition, and an income calculation — and returns a clear, county-specific result.

2026-vs-2027 threshold comparison panel
A/B/C level labels paired with DOR's Threshold 1/2/3 terminology
Income spectrum visualization showing where you land
5% buffer "you're close — please call" branch
Tailored "documents to bring" list based on your inputs
Click-to-reveal RCW citations throughout
Printable result document opens in a new tab
Direct link to your county assessor's website

Open the screening tool

Version 1 · Original

The original release

The first published version of the screening tool. Same eligibility logic and 2027 threshold data, with a simpler presentation and fewer guided features. Preserved here for reference and for member counties that initially integrated against it.

Open v1 →