Businesses - Apply for a tax refund | Washington Department of Revenue

Attention!

My DOR and other online services will be down for maintenance from 5 p.m. PST Friday, January 17, 2025, to 8 a.m. PST Tuesday, January 21, 2025.

Registered businesses

If you are a registered business and you believe you have overpaid taxes, penalties, or interest, you may request a refund directly from the department by:

Amending your excise tax return.
Completing an Application for Refund or Credit form.

The following information must be included with your refund request:

Name and account ID.
Amount of the refund.
Tax type and taxable period.
Explanation.
Signature.

Note: A refund or credit cannot be made if the overpayment was originally received more than four years before the start of the current calendar year.

Mail your request to:

Attn: Refunds
Washington State Department of Revenue
PO Box 47476
Olympia, WA 98504-7476