Business Mileage Calculator
Calculate your business mileage claim in seconds. Enter your start and end postcodes, add stops, and see the estimated claim value instantly — no sign-up required.
Calculate Your Mileage Now
Free, interactive and no sign-up required. Enter your postcodes below.
Free Mileage Calculator
Enter your postcodes to calculate distance and estimated HMRC mileage claim.
HMRC rate: 55p (first 10,000 miles)
Distance is estimated using geocoded postcodes and a standard UK road multiplier. For exact route distances, track journeys with MileageCalendar.
Calculating business mileage is harder than it looks
To calculate your business mileage claim, you need to know the exact distance of every business journey, the date it was made, the business purpose, and the correct HMRC rate. Then you need to multiply, add up, and track the 10,000-mile threshold.
If you drive to multiple client sites in a day, the calculations multiply. Most sole traders end up estimating — and estimates mean missed claims or HMRC questions.
A business mileage calculator that does it all
The calculator above is free and does not require sign-up. Enter your start and end postcodes, add any intermediate stops, and see the total distance and estimated claim value instantly.
When you are ready to track all your journeys automatically, MileageCalendar records every business trip, applies the correct HMRC rate, tracks the 10,000-mile threshold, and produces a compliant report for your Self Assessment.
Postcode to postcode
Enter any UK postcode or address to calculate driving distance.
Multi-stop routes
Add as many intermediate stops as you need for multi-visit journeys.
Return journeys
Toggle return journey to double the mileage for round trips.
Self Assessment ready
Export reports formatted for your Self Assessment tax return.
How it works
Calculate your claim
Use the free calculator above to estimate your business mileage claim — no sign-up required.
Track your journeys
Ready to track all your journeys? Connect your calendar or add journeys manually.
Export and claim
Download a compliant report or sync to your accounting software for your Self Assessment.
How business mileage is calculated
Business mileage is calculated by multiplying the number of business miles driven by the HMRC approved rate. For the 2026/27 tax year, the rate is 55p per mile for the first 10,000 miles and 25p per mile above.
For example, 5,000 business miles at 55p per mile = £2,750. If you drive 12,000 miles, the first 10,000 are at 55p (£5,500) and the remaining 2,000 are at 25p (£500), giving a total claim of £6,000.
The calculator above does this for you instantly. When you track all your journeys with MileageCalendar, the app does this calculation for every journey automatically — including tracking the 10,000-mile threshold across the tax year.
What counts as business mileage?
Business mileage includes travel between different work locations, client visits, supplier visits, site visits and business errands. Your regular commute to a fixed workplace is personal, not business.
If you are a sole trader who works at multiple client sites, the journeys between those sites (and from home to your first client) are business mileage. If you are an employee who travels to temporary work locations, those journeys may also be claimable.
Multi-stop and return journeys
If your working day involves multiple stops — client A, then supplier B, then site C — the calculator sums the distance between each consecutive point to give you the total journey mileage.
For round trips, toggle the return journey option to double the mileage. This is useful for journeys where you drive to a client and back to your starting point.