Business mileage calculator
Put in your business miles to see what they are worth at HMRC’s rates. Free, for sole traders, partners and anyone their company pays for using their own vehicle.
Business miles only, for the whole tax year. Not the total on the clock.
HMRC’s own example
11,000 business miles is worth
£5,750.00
10,000 miles at 55p = £5,500.00
1,000 miles at 25p = £250.00
You claim this through simplified expenses, and it goes in the expenses total on your Self Assessment return.
This uses the rates HMRC publishes. Whether a journey counts as business travel depends on your own facts. What HMRC says about that.
What are the HMRC mileage rates?
For 2026 to 2027, cars and vans are 55p a mile for the first 10,000 business miles and 25p a mile after that. Motorcycles are 24p a mile at any distance.
The 55p started on 6 April 2026. Before that the first 10,000 miles were 45p, a rate that had stood since April 2011. The mileage guide has the rates and who can use them.
From 6 April 2027 the rate above 10,000 miles is set to rise to 35p, once the regulations are made, and the 55p rate is now permanent. What else the Budget changed.
Do both tax years work?
Yes. Choose the year at the top of the calculator. The return for 2025 to 2026 is due by 31 January 2027 and uses the old rate, so pick that year for that return. The return for 2026 to 2027 uses the new rate.
What is the 10,000 mile threshold?
It is the point where the higher rate stops. For a car or van, the first 10,000 business miles in a tax year are paid at 55p, and every mile after that at 25p. On 12,000 miles that comes to £6,000 for 2026 to 2027, or £5,000 at the old rate.
Does the 10,000 mile threshold reset for each vehicle?
Not for vehicles of the same kind. Booklet 480 says: “Each kind of vehicle is dealt with separately, though different vehicles of the same kind are dealt with as though they were the same vehicle.” So two vans share one 10,000 miles, and a van and a motorcycle are counted on their own.
Do motorcycles have a threshold too?
No. Motorcycles are 24p a mile whether you ride 500 miles or 15,000. Only cars and goods vehicles step down after 10,000 miles.
Can I claim parking and tolls on top?
Yes. HMRC says: “The mileage rate does not include incidental expenses incurred in connection with a particular journey, such as tolls, congestion charges and parking fees.” You claim those separately. The rate already covers fuel, servicing, repairs, insurance and depreciation, so do not claim those as well.
What if I have already claimed the van as a capital allowance?
Then you cannot use the flat rate for that vehicle. HMRC says: “You cannot claim simplified expenses for a vehicle you've already claimed capital allowances for, or you've included as an expense when you worked out your business profits.” It is one or the other.
What counts as a business journey?
HMRC says: “The mileage rate is only available for journeys, or any identifiable part or proportion of a journey, that are wholly and exclusively for business purposes.” Private journeys, such as travel from home to work, are not covered. A builder who travels from home to a series of temporary sites is treated differently, and HMRC sets out how in its manual.
Whether your own journeys count depends on your facts. The guide sets out HMRC’s test and who to ask.
Do I need to keep a mileage log?
Yes. HMRC says: “It is therefore important that a contemporaneous record of business mileage is maintained to support any claim using the flat rate.” The flat rate replaces your fuel receipts, not the record of each journey.
You record journeys on a mileage app on your phone, and we keep the log with your books, so every journey you record is in your year end figures.
Get in touchPrimary sources and further reading
The arithmetic here is checked against HMRC's own worked examples, from both the public guidance and the internal manual.
- Simplified expenses if you're self-employedGOV.UK (opens in a new tab)
- Simplified expenses if you're self-employed: VehiclesGOV.UK (opens in a new tab)
- Simplified expenses: expenditure on motor vehiclesHMRC (opens in a new tab)
- Expenses and benefits: business travel mileage for employees' own vehiclesGOV.UK (opens in a new tab)
- How to tax mileage payments for employees (480: Chapter 16)HMRC (opens in a new tab)
- Budget 2026: Overview of Tax Legislation and Rates (OOTLAR)GOV.UK (opens in a new tab)
- Budget 2026GOV.UK (opens in a new tab)
We do your books and keep your tax deadlines.
That includes your mileage log. Join the waitlist for 2027.