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Cost of OwnershipMileage Reimbursement Calculator
Work out what your business or volunteer miles are worth. Enter the miles you drove and the per-mile rate — use the current IRS standard rate or whatever your employer pays.
How this calculator works
Reimbursement is simply your miles multiplied by the per-mile rate. The IRS sets a standard business mileage rate each year — it changes annually, so check the current figure before you file — and employers may use that rate or their own. The standard rate is designed to cover fuel plus wear, maintenance, insurance, and depreciation, not just gas.
What changes the number
- The IRS standard rate changes every year — always confirm the current rate before claiming or filing.
- The standard rate already bundles in fuel, maintenance, insurance, and depreciation — don’t add those separately.
- Keep a contemporaneous log of dates, miles, and purpose; the IRS requires records to back up a deduction.
Frequently asked questions
What is the IRS mileage rate?
A per-mile rate the IRS publishes each year for business driving, with separate lower rates for medical/moving and charity. It has changed recently — look up the current number and enter it here.
Does it cover just gas?
No — the business rate is meant to cover the full cost of operating a vehicle: fuel, maintenance, repairs, insurance, and depreciation. That’s why it’s much higher than fuel cost per mile alone.
Can I deduct mileage and gas?
No — you choose either the standard mileage rate or actual expenses, not both. The standard rate is simpler and already includes fuel.