Free tools

Mileage allowance calculator

Enter how far you drive, how often and your rate. The calculator works out the mileage allowance per trip, per month and per year.

km
Unit
Round trip

Enter the rate that applies where you are.

Mileage allowance

Per trip

13.80

Distance per trip
46 km
Per month
55.2
Per year
662.4

In the currency of your rate. An estimate, not tax advice.

Per trip: 13.80

How the allowance is worked out

The mileage allowance is the distance times the rate per kilometre or mile. A round trip counts the distance twice.

The rate depends on your country and your vehicle. In the UK, for example, HMRC's rate for cars is 55p per mile for the first 10,000 business miles from 6 April 2026, and 25p after that. Check the rule where you are and enter that rate.

If you drive the same route several times a month, the calculator also shows what that adds up to per month and per year.

Questions about mileage

What counts and how to work it out.

Multiply the business distance by the rate per kilometre or mile. A 23 km trip each way is 46 km round trip, which at €0.30 per km comes to €13.80.

Trips you make for the business, such as picking up items you bought, going to a viewing or delivering an item to a buyer. Commuting between home and a fixed place of work usually does not count.

The rate your tax authority accepts for your vehicle. It differs by country and sometimes by distance or vehicle type, so check the current rule where you are.

The date, start and destination, distance, the purpose of the trip and which vehicle you drove. Keep it, so you can show how you worked it out.

Read more on the blog

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A mileage log that does the maths

In Qasell you log the trip when you park. The distance is worked out on the map and the allowance is counted in your profit.

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