Washington State Department of Revenue Filing Taxes Online fortress.wa.gov Washington State Department of Revenue Taxpayer Services PO Box 47478 Olympia, WA 98504-7478 Phone: 1-800-647-7706

Washington State Department of Revenue Tax Forms dor.wa.gov Washington State Department of Revenue Taxpayer Services PO Box 47478 Olympia, WA 98504-7478 Phone: 1-800-647-7706 NOTE: The st