Mileage Reimbursement Calculator
What the miles are owed — your rate in cents against the miles driven, the fuel the pump actually charged, and the gap between the two.
Mileage Reimbursement Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Rates are inputs — the page names the US IRS anchors but computes YOUR number
- Miles 0 to 100,000; rate 0.1 to 500¢; price 0 to 10
In short: 300 miles at the 76¢ business rate reimburses $228.00. The same miles burn $37.50 of fuel at 28 MPG and $3.50 — so 63.5¢ a mile is left for the costs you don't see at the pump. At 300 miles a month that is $2,736.00 a year.
Formula
reimbursement = miles × rate; fuel = miles ÷ MPG × price; gap = rate − fuel-per-mile
A reimbursement rate is a blended number: it stands in for the fuel you buy AND the wear the car takes. The honest check prices the pump line from your own MPG and price, then reads the gap — the part of the rate meant to cover depreciation, insurance and tires. The US IRS business rate is the usual anchor (76¢ from July 2026, 72.5¢ for its first half; the charitable rate is fixed at 14¢) — but your policy's number is the one that governs, and this page takes whatever rate you name.
Worked Example
- Enter the miles driven and your rate in cents.
- Enter your MPG and the pump price for the honest comparison.
- Read the reimbursement, the pump line, and the gap.
Defaults: 300 miles at 76¢ — $228.00 back, $37.50 of it fuel, 63.5¢ a mile left over. First-half-2026 miles earned 72.5¢.
Strengths & Limits Of This Model
Where this engine is strong
- The pump line priced from your own MPG
- The gap names what the rate must still cover
- Sub-cent rates exact in cents
Where it stops
- No tax-eligibility logic — the rate category is yours to name
Practical Use Cases
Expense reports
the miles times the rate
Rate checks
is the policy's number fair
Volunteer driving
the charitable-rate figure
Methodology & Editorial Standards
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
Mileage Reimbursement Calculator — 8 Expert FAQs
8 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
What rate should I use?
Whatever your policy or the tax rule names. The usual anchor is the US IRS business rate — 76¢ a mile from July 2026, 72.5¢ for January through June — but employers set their own all the time, and the charitable rate is a different, fixed figure. This page computes the rate you enter.
Why did the business rate change mid-year?
Because the IRS adjusted it — a rare mid-year move, effective 1 July 2026, to track rising driving costs. Miles are priced by WHEN they were driven: 72.5¢ for the first half of 2026, 76¢ from 1 July on.
What does the rate actually cover?
More than fuel: the blended rate stands in for gas, depreciation, insurance, maintenance and tires. The gap card prices how much of your rate is left after the pump takes its share — that residue is what the unseen costs must live on.
What if the rate is under my fuel cost?
Then every mile drives at a loss and the card says so plainly — the reimbursement does not even cover the pump. That is a negotiation fact, not a rounding footnote.
Does this page decide tax deductions?
No — it prices the arithmetic. Whether your miles qualify, and under which rate category, is the tax rules' question; this page takes the rate you name and multiplies honestly.
Why cents instead of dollars?
Because reimbursement rates are spoken in cents per mile — 76¢, not $0.76 — and sub-cent rates like 72.5¢ stay exact in cents where two decimals would lie by rounding.
Should medical or moving miles use this?
The rates differ (23.5¢ from July 2026 for medical and active-duty moving) and the eligibility rules are their own — but the arithmetic is identical: enter the miles and the category's rate.
Is the yearly figure just twelve months?
It multiplies the entered month's miles by twelve — exact for a steady commute, an estimate for seasonal driving. Enter a typical month and read it as a run rate.