Pay Online

From your U.S. financial institution checking account, or using an accepted credit/debit card. Go to our property search screen > press I Agree > enter your property information > press Search > click on View Details, far right on the subsequent list > follow the on-screen instructions to make a payment.

There is a convenience fee for each transaction.

Pay by Phone

From your U.S. financial institution checking account, or using an accepted credit/debit card. Proceed to the pay by phone instruction screen.

There is a convenience fee for each transaction.

 Pay by Auto-Pay

Have your tax payment automatically deducted from your U.S. financial institution checking or savings account, on the due date, for every property you pay taxes on in Whatcom County. Proceed to the Auto-Pay information screen.

Pay by Mail

Return your tax payment coupon(s), and check made payable to Whatcom County Treasurer, in the envelope provided, to:

PO Box 34873

Seattle, WA 98124-1873.

We cannot accept post-dated checks. If you want a receipt, you must enclose a self-addressed stamped envelope. Please note: the official postmark must reflect the due date, or before. Any payment postmarked after the due date will be considered delinquent, and returned to you for interest and possible penalty.

If you do not have your tax payment coupon, please write the property ID number(s) on your check, or print a screen image from the search online function, and include that with your check. But, please do not send just a check without an identifying property ID number. Thank you.

Pay in Person

Our office hours are 8:30am to 4:30pm, Monday-Friday, except observed holidays. We are located in the Whatcom County Courthouse, at 311 Grand Ave, Suite 104, Bellingham, WA, on the 1st floor. Outside payment drop boxes can be found at each entrance to the courthouse for your convenience.

If you pay with an accepted credit/debit card there is a convenience fee for each transaction.

View a map of the Courthouse area.