Colorado IFTA State Tax: An Overview

Do you own a trucking business in Colorado? It’s important you register the vehicles in your fleet for IFTA filing to avoid penalty. Let us guide you further.

It is of utmost importance that you file your Colorado IFTA tax report before the due deadlines as late filing may result in a penalty of $50 or 10% of the net tax liability. Existing IFTA accounts that are in good standing are renewed automatically. Here, we explain the Colorado IFTA application process in detail:

  • Apply by mail or in person.
  • No applicable fees.
  • You are going to need one set of decals per qualified vehicle.
  • The process generally takes 5 to 7 business days.
  • Apply in person to avail same day decals.

Frequently asked questions

January, February, March: April 30

April, May, June: July 31

July, August, September: October 31

October, November, December: January 31

Factors such as total miles, total gallons, miles by jurisdiction, and gallons by jurisdiction need to be considered when filing your state fuel tax.

IFTA accounts will only be closed in good standing once all returns have been filed in addition to paying any balance due on the account.

You can find all the relevant information on

Without a compliance issue, a completed license application will be processed within 5 business days after receipt.