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Prosser Office

620 Market St

PO Box 630

Prosser, WA 99350

© 2017 by Benton County Treasurer

Kennewick Office

5600 W Canal Dr Ste A

Kennewick, WA 99336

Phone: 509-786-2255 or 509-735-8505

Email: Treasurer@co.benton.wa.us

Hours: 8:30am - 4:30pm Monday - Friday

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Tax Relief/Exemptions

Senior Citizens and Disabled Person Tax Relief - CLICK HERE to find out more.

Per RCW 84.36.381 (3) (a), an exemption is available for  senior citizens 61 years of age or older as of December 31st of the year in which the application is filed, OR if physically disabled, OR a surviving spouse who is 57 years of age or older and your spouse had been receiving the exemption at the time of death.

The exemption will be allowed on your principal residence and up to one acre of land.

Please contact the Benton County Assessor's Office at (509) 786-2046 or (509) 736-3088 for further information.