HMRC Mileage Claim Calculator
Calculate the HMRC-approved mileage allowance for using your own car, van, motorcycle or bicycle for business travel — 45p per mile for the first 10,000 miles, then 25p after. See exactly how much Mileage Allowance Relief you can claim if your employer pays less than the approved rate.
Smart Tips
You could claim back £720 from HMRC
Your employer paid £3,600 less than the HMRC-approved amount. You don't get the shortfall back in full — you get tax relief on it at your marginal rate, worth £720 in this case. Claim via a Self Assessment return or form P87 if you don't file one.
GOV.UK: Form P87 — claim employment expenses (opens in new tab)Carried a colleague on a business trip?
You can claim an extra 5p per mile, tax-free, for each fellow employee you carry as a passenger on a business journey they're also making for work. Add passenger miles above if this applies.
GOV.UK: Mileage allowance rules (opens in new tab)Keep a mileage log
HMRC expects a record of each business journey — date, destination, purpose, and miles travelled — to support a Mileage Allowance Relief claim or to justify payments received. A simple spreadsheet or app log is usually enough.
GOV.UK: Claim tax relief for using your own vehicle (opens in new tab)Frequently asked questions
- What is the HMRC mileage rate for 2025-26?
- For cars and vans, HMRC's approved rate is 45p per mile for the first 10,000 business miles in a tax year, then 25p per mile after that. Motorcycles are a flat 24p per mile, and bicycles are a flat 20p per mile. These rates have been unchanged since 2011/12.
- What is Mileage Allowance Relief?
- If your employer pays you less than the HMRC-approved mileage rate (or nothing at all), you can claim tax relief on the shortfall. This isn't a refund of the full shortfall — it's relief at your marginal income tax rate, so a basic-rate taxpayer gets back 20% of the shortfall, not 100% of it.
- What happens if my employer pays more than the approved mileage rate?
- Any amount paid above the HMRC-approved rate counts as a taxable benefit. It's usually added to your taxable pay and may also attract Class 1 National Insurance, typically collected through payroll or your tax code.
- Can I claim extra for carrying a passenger?
- Yes. If you're driving a car or van and carry a fellow employee who is also on a business journey for your employer, you can claim an additional 5p per mile, tax-free. This doesn't apply to motorcycles or bicycles.
- How do I actually claim Mileage Allowance Relief from HMRC?
- If you already complete a Self Assessment tax return, include the claim there. Otherwise, use form P87 (either online via your Personal Tax Account or by post) if your claim is for £2,500 or less in a tax year. Keep a mileage log of dates, destinations, purposes and miles travelled to support your claim.