Mileage Reimbursement Rate

CRS 24-9-104 states that on and after January 1, 2008, state officers and employees shall be allowed mileage reimbursement of 90% of the prevailing IRS rate per mile for each mile actually and necessarily traveled while on official state business and, when authorized to be utilized and necessary for official state business, 95% of the prevailing IRS rate per mile for four-wheel-drive vehicles (necessary because of road, terrain, or adverse weather conditions) and forty cents per nautical mile for privately owned aircraft.

The IRS mileage reimbursement rate and the State of Colorado rates are effective January 1, 2023.



Current mileage reimbursement rates in cents per mile


IRS Rate

State of Colorado







Mileage Rate History