How to Calculate Business Trip Fuel Reimbursement
Business trip fuel reimbursement is calculated using the formula: Fuel Cost = (Distance ÷ MPG) × Fuel Price. For round trips, double the one-way distance. Most employers require documentation such as the trip route, EPA fuel efficiency rating, and the fuel price from a reliable source like GasBuddy or AAA on the trip date.
Alternatively, many US companies use the IRS standard mileage rate ($0.67 per mile for 2024) which covers fuel, depreciation, and maintenance in one rate — eliminating the need to track individual fuel costs. Check your company's reimbursement policy to know which method applies.
Frequently Asked Questions
The IRS mileage rate ($0.67/mile in 2024) is simpler and often more favorable for efficient vehicles. Actual fuel cost calculation may be better for low-mpg trucks or SUVs. Compare both and use whichever your employer allows.
Typically you need a trip log with date, destination, purpose, and mileage. Some employers also require fuel receipts or a screenshot of the local gas price on the travel date.
If reimbursed under an accountable plan (with documentation), fuel reimbursements are generally not taxable. Reimbursements without proper documentation may be treated as taxable wages.