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Free calculatorTax year 2026/27
Fuel costs calculator
Estimate annual fuel costs from your mileage, fuel price and miles-per-gallon.
The calculator
Estimate only. This calculator provides an estimate only and should not be relied on as advice.
How the fuel cost calculator works
Enter your annual mileage, the price of fuel and your vehicle’s miles-per-gallon (MPG), and the calculator estimates your yearly fuel cost. It is a simple way to compare vehicles, budget for business travel, or see the saving from a more efficient car.
If you use your own car for business, you may be able to claim mileage at HMRC’s approved rates — ask us how to record and claim this correctly.
Frequently asked
Can I claim business mileage?+
If you use your own vehicle for business journeys you can usually claim HMRC’s approved mileage rate. We can set up simple record-keeping so you claim the full amount.