California Interstate User Diesel Fuel Tax (DI) License

The California Interstate User Diesel Fuel Tax (DI) License is issued only to persons who operate diesel-powered vehicles and whose interstate travel is restricted to Mexico and California, or to persons who are not based in an International Fuel Tax Agreement (IFTA) jurisdiction. Please visit our pages that explain the International Fuel Tax Agreement for more information.

Online Registration

You may register for a permit, license, or account using online registration. Online registration is the convenient way to register and is available 24 hours a day.

Forms

  • Form BOE-501-DI, Interstate User Diesel Fuel Tax Return.
  • Form BOE-514-DI, Acknowledgement of Licensee Responsibilities Under the California Interstate User Diesel Fuel Tax.
  • Form BOE-501-DI-s, Declaracion de Impuestos Sobre el Combustible Diesel para Usuarios Interestatales.

Publications

Special Notices

Resources

Contact Us

By Phone
1-800-400-7115 toll-free
1-916-323-4404 fax

By Mail
Motor Carrier Office, MIC: 65
State Board of Equalization
P.O. Box 942879
Sacramento, CA 94279-0065