Whitman County, WashingtonProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Tax bill mailing
- March 15, 2026 — Whitman County's published property-tax calendar lists March 15 as the tax-bill mailing date.
- Payment deadline
- For 2026 taxes: first-half property taxes are due April 30, 2026; second-half taxes are due October 31, 2026. Tax statements are generally mailed in February unless the county publishes a more specific date.
- Assessment appeal
- Whitman County requires a timely petition to the Board of Equalization; the filing period is generally 30 days from the date printed on the valuation notice. The county posted 2026 hearings beginning June 1, 2026 and accepts petitions at the Board of Equalization, Suite 125, 400 N. Main, Colfax.
Exemptions & appeals
View exemption application (opens in a new tab)Senior relief
Washington senior/disabled property-tax exemption: at least one owner is age 61 or older or unable to work because of disability, the home is the principal residence, and combined household income is no more than $50,000 under Whitman County's 2026 screening notice; proof of income, age, residency and disability (if applicable) is required.
Valuation limits
Washington has no individual-parcel annual valuation cap verified for these counties. County assessors value taxable property at 100% of true and fair market value. The 2026 regular levy limit generally limits each taxing district's levy growth to 1% (101% limit factor), but that is a taxing-district revenue limit, not a cap on an individual property's assessed value or tax bill; new construction, improvements and voter-approved levies may be treated differently.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →