HMRC mileage allowance calculator
Self-employed and using your own vehicle for work? HMRC's simplified expenses let you claim a flat rate per business mile instead of working out fuel, insurance and repairs. Enter your miles to see your claim.
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How the rates work
- Cars and vans: 55p a mile for the first 10,000 business miles in 2026-27 (45p up to 2025-26), then 25p a mile after that.
- Motorcycles: 24p a mile, whatever the mileage.
- The 10,000-mile threshold counts business miles in the tax year, so a trip that crosses it is split between the two rates.
- If you use the £1,000 trading allowance, you can't claim expenses on top, mileage included.
Sources: GOV.UK simplified expenses for vehicles and HMRC Business Income Manual BIM75005. Bicycles aren't covered by the self-employed flat rates.
Keep a proper mileage log
HMRC expects a record of each business journey. The UK Mileage & Allowable Expenses Log works out the tax year, keeps a running total, splits trips at 10,000 miles, adds the working-from-home flat rate and totals your other expenses. It's available now in the Straight Sums shop for £7.
Get the log (£7)Starting out as a sole trader? The UK Self-Employed Starter Pack bundles this with the income & expense tracker and the tax set-aside planner for £17 (save £6).
Prefer paper? Our printed Mileage Log Book (6 x 9 in, 2,000 journeys, monthly totals and a yearly claim worksheet) is £7.99 on Amazon. Also available from Lulu (£9.99). For your income and expenses, there is also a printed Self Employed Accounts Book (£7.99).
Not sure whether to claim expenses or the allowance? Try the free £1,000 trading allowance calculator, or read the mileage and allowable expenses guide.