The PSC Procedural Statement Travel limits reimbursable miles to the number driven in excess of the number of miles involved in the individual's daily commute (round trip) for work. This calculation applies even in cases where the individual does not normally drive to the primary work location: e.g., the individual typically uses public transit or walks to work. This calculation does not apply if the individual drives to a place other than the usual work site on a non-normal workday.

Mileage Calculator

Use the Mileage Calculator, within the Concur Travel & Expense System, to enter reimbursable miles. It provides an online map to calculate the number of miles driven and also assists in calculating and deducting the normal commute. For instructions, see the Adding Mileage video and procedures.

Example A

Joe drives 11 miles to and from his usual work site in downtown Denver for a normal round trip (RT) commute of 22 miles. On Thursday, Joe drives from his home to the Boulder Campus to attend an early morning meeting. After the meeting, he continues to his primary work location where he completes his work day and then drives home. As a result, Joe drives a total of 53 miles that day - from home to Boulder to his office and back to his home.

Joe can request reimbursement for 31 miles. This represents the number of miles that he drove in excess of his usual RT commute (53 - 22 = 31)

Example B

Lucille takes the bus to her primary work location in Aurora. If she were to drive, her round trip (RT) commute would be 8 miles. On Friday, she needs to use her car since she is participating in a conference at an offsite location, 12 miles from her house. The conference lasts the full day and Lucille drives home upon its conclusion.

Lucille can request reimbursement for 16 miles. This represents the number of miles she had to drive in excess of her usual RT commute (24 - 8 = 16). This calculation applies even though Lucille does not normally drive her personal vehicle to work.

Example C

Vance drives to his Colorado Springs office on Monday morning, leaves to attend a required function in Pueblo, and returns to the office early that afternoon. His normal round trip (RT) commute to work is 17 miles. His drive from the office to Pueblo and back to the office was 90 miles.  

Vance can request reimbursement for 90 miles on Monday. Since he started and ended the trip to Pueblo at his primary work location, he doesn't deduct a commute from the mileage for the Pueblo trip. 

Example D

Shaheeda usually drives 14 miles round trip (RT) to her work site in Aurora. On Sunday evening, she drives 27 miles from her home to Denver International Airport (DIA) to catch a flight to an out-of-state conference. On Wednesday evening, she flies back to DIA and drives home.

Shaheeda can request reimbursement for all 27 miles driven on Sunday, since it is not a normal work day and she is not going to her normal work site. She can request reimbursement for 13 miles driven on Wednesday, since it is a normal work day and she ordinarily would drive 14 miles RT on a normal work day (27 - 14 = 13). Note that although she drove “one-way” on Wednesday, she still deducts her RT commute.

Example E

Marnie's round trip (RT) commute to the office is 3 miles. On Tuesday, Marnie's husband drives her from home to DIA so she can catch a flight for an out-of-state meeting. He drops her off and returns home. In order to get Marnie to the airport, her husband drives a total of 70 miles round trip.

For that day, Marnie can request reimbursement for 67 miles (70 - 3). This represents the total number of miles her husband drove so she could fulfill her work responsibilities (70) minus the total number of miles of her usual RT commute (3). Note that although Marnie wasn’t the one driving, she still deducts her RT commute from the total miles driven to arrive at the reimbursable mileage.

Example F

Jose has a 60-mile round trip (RT) commute to his primary work location. On Sunday, he drives to the office to set up for an early-morning meeting on Monday.

Jose cannot request reimbursement for any miles on Sunday. It's not a normal work day for him, but it is his normal work location. Employees cannot be reimbursed for mileage to their usual work site, no matter what day of the week it is.