Business Mileage Calculator
Estimate the HMRC-style mileage allowance for business journeys in your own vehicle.
Estimate mileage allowance from business journeys.
Use the calculator below to create a quick planning estimate based on the figures you enter. Results are for guidance and should be checked against current UK tax rules and HMRC guidance where appropriate.
Business Mileage Calculator
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Estimate mileage allowance from business journeys.
Uses 45p per mile for the first 10,000 business miles and 25p thereafter for cars/vans; motorcycles use 24p per mile. Specific circumstances are not modelled.
How to use this calculator
Enter the figures that best match your situation and select the calculation button. The result is intended as a useful planning estimate rather than a substitute for a tax return or professional advice.
Keep your figures up to date when tax rates, thresholds, costs or business circumstances change.
Frequently Asked Questions
What mileage rates does the calculator use?
For cars and vans it uses 45p per business mile for the first 10,000 miles and 25p thereafter. For motorcycles it uses 24p per mile.
What counts as business mileage?
Business mileage generally relates to qualifying business journeys rather than ordinary commuting between home and a permanent workplace. The precise tax treatment depends on the circumstances.
Can I use the mileage rates for every vehicle?
The calculator covers cars/vans and motorcycles. Different rules can apply to other transport arrangements and to passenger payments.
Does the calculator work out my actual tax deduction?
No. It estimates the mileage allowance using the selected rate. Your tax position can depend on whether you are an employee, director or self-employed.
Should I keep mileage records?
Yes. Keep suitable records of qualifying business journeys, including dates, destinations, mileage and the business purpose.
Important information
This calculator provides an estimate for general planning and educational purposes. It is not a tax return, accounting record or personalised professional advice. Tax rules, rates and thresholds can change, and individual circumstances can affect the result.