Fuel licenses: Dyed diesel user

Who needs a license?

You need a license if you drive on public roads or highways using special dyed fuel. Dyed diesel users are government agencies or organizations approved by us, such as:

• Public school districts
• Nonprofit educational organizations
• Government agencies

How to get your license

1. Complete a Dyed Diesel User Application.
2. Send the completed application to the address or fax number on the form.
3. Once we process your application, we'll send you a copy of:
   • Your license
   • Your first tax return
   • Instructions

Recordkeeping requirements

You need to keep detailed mileage records for each vehicle using dyed fuel on public roadways. These records must include on-road and off-road use on a daily basis.

How to file your tax return

Complete a Dyed Diesel Fuel User Tax Return and:

• If you're including a payment, mail your completed return and a check to:
  
  Prorate and Fuel Tax
  Department of Licensing
  PO Box 9048
  Olympia, WA 98507-9048
• If you're sending only your return (without a payment), mail or fax it to:
  
  • Mail:
    
    Fuel Tax Section
    Department of Licensing
    PO Box 9228
    Olympia, WA 98507-9228
  • Fax: 360.570.7839 or 360.586.9729

For more information about completing your return, see Dyed Diesel Tax Return Instructions.

Reporting due dates

Late payments

Related information

• Fuel Tax Compliance Guide
• Dyed diesel
• Reports and data: Licensed dyed diesel users

Questions? Need help?

Call us: 360.664.1858