File and pay online and manage your IFTA and IRP accounts.
Find out about our upcoming new tax filing and online payment system.
How Substitute House Bill 1883 will simplify fuel tax laws in Washington.
Where fuel tax money goes, and get tribal fuel tax information.
The legal and illegal uses for dyed diesel, and how to report violators.
How to get a license, file fuel tax returns, and make fuel tax payments.
Information about IFTA licenses, tax returns, and recordkeeping requirements for carriers who operate in more than 1 state or province.
Fuel tax and International Registration Plan (IRP) audits.
Who is eligible and how to apply for a refund.
Find office locations and who to contact with your fuel tax and prorate questions.
Prorate and fuel tax laws and rules currently being developed.