When are property taxes due in Benton County, Washington?

Benton County property taxes are due April 30. A second installment is due October 31. This deadline applies to all counties in Washington.

What is the penalty for late property tax payment in Benton County, Washington?

The late payment penalty in Benton County is 3% June 1, +8% December 1.

How do I pay Benton County, Washington property taxes?

You can pay Benton County property taxes via Online, mail, in-person.

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Benton County Property Tax Due Date

Name: Treasurer Office
Address: 7122 W Okanogan Pl #E110, Kennewick, WA, 99336, US
Telephone: (509) 735-8505

Washington

(509) 735-8505

2026 Property Tax Due Dates

Official Source

Installment 1

April 30

First half

Installment 2

October 31

Second half

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Penalty: 3% June 1, +8% December 1Grace period: None

Payment Methods

Online, Mail, In-Person

Benton County Treasurer

Phone

(509) 735-8505

Office Address

7122 W Okanogan Pl #E110
Kennewick, WA 99336

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Office Hours

Mon-Fri 8:30am - 4:30pm

How to Pay

Online

Pay using credit card or e-check

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By Mail

Mail check payable to Benton County Treasurer

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In Person

Visit the Treasurer's office — 7122 W Okanogan Pl #E110, Kennewick WA 99336, Mon-Fri 8:30am - 4:30pm

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Other Counties in Washington

Adams Asotin Chelan Clallam Clark Columbia Cowlitz Douglas

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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.