HMRC mileage vs real fuel cost

HMRC lets you claim 45p per mile for the first 10,000 business miles in a car. This calculator compares that with what the fuel actually costs at today's average price.

Calculate your mileage costs

Your real MPG

Pump price (pence/litre)

Business miles

HMRC rate (pence/mile)

Your results

Cost per mile—

Fuel cost—

HMRC allowance—

What the difference means

If the allowance is higher than your fuel cost, the difference helps cover insurance, servicing, tyres and depreciation. It is not a pure profit figure, and it is not tax advice.
The 45p rate applies to cars and vans for the first 10,000 business miles; it drops to 25p after that. Motorcycles use 24p per mile.
HMRC sets the rates and can change them.

Our methodology

Guidance only, not tax advice. Check the current HMRC approved mileage rates before you claim.

Fuel Cards

Drive for business or sole trader? Compare UK Fuel Cards

Save up to 10p/L and reclaim VAT automatically with HMRC-compliant invoicing.

Find fuel cards →