Calculating cost per mile becomes a simple equation once you know your mileage and total expenses. Divide your total expenses by the total number of miles driven, and the result is your cost per mile. For example, the USPS drives 1.2 billion miles every year, with annual costs totaling $82.2 billion.

For the simplest cost-per-mile calculation, you merely divide the total expenses from your profit and loss statement by the total number of miles you drove. You can see the Haulin Assets’ profit and loss statement in the show notes for episode 17 of the podcast. The math is simple: $52,440.37 / 31,307 miles, which equals $1.67 per mile.