Prorate and fuel tax offices

Customer service field offices

Olympia

Department of Licensing
2424 Bristol Court SW
Olympia, WA 98502
Map and directions

  • Hours: 8:30 a.m. – 4:30 p.m., Monday – Friday

Vancouver

Department of Licensing
1301 NE 136th Ave
Vancouver, WA 98684
Map and directions

  • Phone: 360.260.6396
  • Fax: 360.260.3754
  • Hours: 8:30 a.m.– 4:30 p.m., Monday – Friday

Olympia headquarters

IRP (prorate)

  • Phone: 360.664.1858
  • Fax: 360.570.7829
  • Mail:
    • With payments:
      IRP Unit
      PO Box 3777
      Seattle, WA 98124
    • Without payments:
      IRP Unit
      PO Box 9036
      Olympia, WA 98507-9036

Fuel tax

  • Mail with payments:
    IFTA Unit
    PO Box 3777
    Seattle, WA 98124
  • Mail without payments:
    IFTA Unit
    PO Box 9228
    Olympia, WA 98507-9228
If you need help with… Phone Fax
IFTA or dyed diesel user licenses 360.664.1868 360.570.7839
Fuel tax refunds 360.664.1838 360.570.7057
Aircraft distributors, heating oil distributors, motor fuel/special fuel distributors, blenders, exporters, importers, or suppliers 360.664.1852 360.570.7842
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