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9611 SE 36th Street
Mercer Island, WA 98040
Phone: 206.275.7604
Hours: M - Th: 9:00 am - 4:00 pm
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City of Mercer Island / Municipal Court / Payment Information

Municipal Court - Payments

You may pay online by going to Visa, MasterCard, American Express and Discover are accepted.

In Person / By Mail
Payments may also be made in person or by mail. The Court accepts payments by cash, check, money order or credit cards (Visa, MasterCard, American Express and Discover). Please do not send cash payments through the mail. Make checks payable to Mercer Island Municipal Court and include your ticket number. If you wish to make a payment during Court closed hours, you may use the large white mail box located in the central part of the City Hall parking lot or the drop box located within City Hall near the Court office.

If you cannot pay your fine in full by the due date and your case is not in collections, you may have the option of setting up payments with Signal Credit Management Service. An application form can be picked up at the Court during open business hours. You must complete the form and submit your first month’s payment to SCMS before your fine due date. For additional information, please contact SCMS at 1.800.874.1958.
If your case has been sent to collections, please contact AllianceOne at 1.800.456.8838. Once your case is with collections, you must contact AllianceOne in order to discuss your payment options. Payments to AllianceOne can also be made through their website at


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