Mileage reimbursement calculator for IRS, HMRC and company rates
This mileage reimbursement calculator answers one question: how much should I be paid, or can I claim, for the business miles I drove? Pick the US IRS standard mileage rate, the UK HMRC approved mileage rates, or type the per-mile or per-km rate from your own company policy, then add each trip. The page shows the amount per trip, the total with parking and tolls, and the gap between your claim and what your employer actually pays.
It is built for the three situations people search for: an employee checking an expense claim, a self-employed driver working out a deduction, and a finance team that needs a quick figure for a custom rate. Nothing is uploaded; the sums run in your browser. To keep a dated, printable record of every journey for tax purposes, use the mileage log template alongside this page.
How to use the Mileage Reimbursement Calculator
- Choose Rate to use: IRS, HMRC, or My own rate.
- For the IRS, pick the rate period your trips fall in. For HMRC, pick the tax year and vehicle, and enter any business miles you have already claimed this tax year.
- Enter each trip and its distance. Press Add a trip for more rows.
- Optionally add parking and tolls, and the rate your employer pays, to see any shortfall or surplus.
- Read the total, then press Copy summary to paste it into an expense form.
Mileage Reimbursement Calculator features
Three rate bases
US IRS rates for 2025 and both halves of 2026, UK HMRC rates for 2025/26 and 2026/27, or a rate you set in miles or kilometres.
HMRC 10,000-mile rule
Cars and vans earn the higher rate on the first 10,000 business miles in the tax year; enter miles already claimed and the split is worked out trip by trip.
Employer comparison
Type what your employer pays per mile or km and see how much more (or less) the reference rate would give.
Any currency
Custom rates work in dollars, pounds, euros, rupees and more, which suits company policies in India where no statutory rate exists.
Private
Nothing leaves your device.
Rates used, and where they come from
Rates are as published on 24 October 2026. The IRS changed its rate in mid-2026, so the period matters. For HMRC, the GOV.UK pages were last updated on 21 May 2026.
| Basis | Rate | Applies to |
|---|---|---|
| IRS business | 70¢ a mile | 1 Jan – 31 Dec 2025 |
| IRS business | 72.5¢ a mile | 1 Jan – 30 Jun 2026 |
| IRS business | 76¢ a mile | 1 Jul – 31 Dec 2026 |
| HMRC cars and vans | 55p, then 25p after 10,000 miles | Tax year 2026/27 |
| HMRC cars and vans | 45p, then 25p after 10,000 miles | Tax year 2025/26 and earlier |
| HMRC motorcycle | 24p a mile | All years shown |
| HMRC bicycle | 20p a mile | Employees; no self-employed bicycle rate |
Worked example
A UK employee has claimed 9,950 business miles so far in 2026/27 and drives a further 100 miles. The first 50 miles are paid at 55p (£27.50) and the remaining 50 at 25p (£12.50), a total of £40.00. In the US, 100 miles driven in August 2026 is 100 × 76¢ = $76.00.
Things to know before you claim
- Commuting between home and a permanent workplace is not business mileage under either system.
- The IRS standard rate already covers fuel, depreciation and maintenance; you cannot add those, but parking and tolls are separate.
- US employees generally cannot deduct unreimbursed mileage on a federal return; the rate is mainly used by employers who reimburse, and by the self-employed.
- In the UK, if your employer pays less than HMRC rates you may claim tax relief on the difference; if it pays more, the excess is taxable.
- India has no government per-km rate. Companies set their own, so use the custom option and check your policy.
Mileage Reimbursement Calculator FAQ
What is the IRS mileage reimbursement rate for 2026?
The IRS business standard mileage rate is 72.5 cents a mile for 1 January to 30 June 2026 and 76 cents from 1 July 2026. For 2025 it was 70 cents. Confirm the current figure on IRS.gov.
What are the HMRC mileage rates?
For cars and vans, 55p a mile for the first 10,000 business miles in the 2026/27 tax year and 25p after; it was 45p before 6 April 2026. Motorcycles are 24p and bicycles 20p.
Is my employer forced to pay the IRS rate?
No. In the US the IRS rate is a safe harbour for reimbursement, not an obligation, although some states require employers to cover business expenses. In the UK employers may pay less or more than HMRC rates.
Can I use kilometres?
The IRS and HMRC rates are per mile. For kilometres, choose My own rate and enter your per-km figure.
Does this replace a mileage log?
No. Tax authorities expect dated records with a purpose for each trip. This calculator gives the amount; the mileage log template keeps the record.
Are the numbers tax advice?
No. They are estimates from published rates, and your circumstances may differ.