Excise & Fuel Tax
IFTA/Fuel Updates
The IRP office has moved to the Westgate DMV office located at 3262 S Wadsworth Blvd. Lakewood, 80214. Carriers can continue to get their IFTA License and Decals while registering the qualifying motor vehicle. Due to the passage of SB25-320, the rate at which the Bridge and Tunnel Impact (BTI) fee increases has changed. Prior to the passage of SB25-320 the rate was set to increase to $0.05; however, since SB25-320 was signed into law the BTI rate will now increase to $0.07, effective July 1, 2025.
On July 1, 2025, the bridge and tunnel impact (BTI) fee and road usage fee (RUF) increases from $0.04 to $0.05 each per gallon.
- Fuel Distributors go to tax.colorado.gov/fuel-tax-and-fee-rates for current and future fuel tax and fee rate information.
- IFTA carriers go to tax.colorado.gov/IFTA-forms for IFTA rates.
Firearm & Ammunition Tax Information
Firearms & Ammunition Excise Tax is effective April 1, 2025. More information, including registration requirements, FAQs, and filing information is available from the Firearms & Ammunition Tax landing page
Quick Links
Excise Tax Information
Fuel Tax & International Fuel Tax Agreement (IFTA) Information
Excise & Fuel Tax Resources
