Please remember that you must claim the state sales tax refund (TABOR refund) when filing your state income tax return. If you claimed a 2023 refund, the TABOR refund will be combined and issued out with your refund. Unlike the 2022 Colorado cashback, no separate check will be issued. 


1Q24 IFTA Newsletter

Physical Address: 1881 Pierce St, Lakewood, CO 80214
Mailing Address: P.O. Box 17087, Room108, Denver, CO 80217-0087

1Q24 IFTA Tax Returns are due April 30, 2024

  • File using our online program, Revenue Online: If new to Revenue Online: Visit and choose “Sign Up.” Information to set up your online account is on your IFTA license.
  • To file by paper: Go to to download the current form, DR 0122, and the 1Q24 tax rates. Tax rates are updated each quarter, so please select the appropriate return and rates.

The Department highly recommends using Revenue Online; tax rates are updated automatically around the 20th of the last month of period, performs calculations for you, and eliminate the possibility of lost returns.

Decals for New Vehicles

Adding vehicles to your IRP fleet does not mean you will automatically be issued IFTA decals. Once you are issued an IRP cab card, you must request IFTA decals by sending a web message or email with a copy of the registration. Mail is sent out at least once a week. If you need overnight delivery, provide a pre-paid FedEx label with a physical location (not a P.O. box).

Replacement Requests

To request decal or license replacements, a Request for Replacement form (DR7053) is required.

Mail not received or Returned

If mail is not received or gets returned; the address must be verified. Second replacement request after address changed/verified will require a prepaid FedEx label to be provided and can prevent account from being renewed.

Contacting the Fuel Unit

The best way to reach the Fuel Unit is through web messages from your Revenue Online account. Please allow us 24 hours to respond, before calling or emailing. Multiple inquiries reduce our ability to respond to you quickly.

  • Send us a web message through Revenue Online. These are usually worked within 24 hours. Attach a copy of the vehicle registration and any required form to the web message.
  • Send us an email to
  • Call us at 303-205-8205 option 1. Phone calls are usually answered within a few rings. If you have to leave a message, messages are usually checked and returned twice a day.


  • The requirements for Colorado IFTA are that operational control and records be maintained in Colorado, the carrier has regular Colorado travel, and has Colorado registered vehicles.
  • The Department will mail IFTA licenses and decals to Colorado addresses.
  • The Department issues notices and decals by mail. To ensure your decals and notices are received timely, verify your mailing address is accurate. The easiest way to verify your address or update your mailing address is visit Revenue Online.

Frequently Asked Questions:
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