A practical mileage log for anyone who drives for work and needs to claim it back. Record each business journey — date, start, destination, distance and purpose — and the tool instantly works out the reimbursement at a rate you control, rolls trips up into monthly totals, and lets you export a CSV for an expense claim or self-assessment. It is built for sole traders, contractors, field engineers, carers, sales reps and anyone whose employer or tax authority pays a per-mile allowance.
How it works
You start by setting three things: the distance unit (miles or kilometres), your currency, and the rate per unit. UK drivers usually set this to the HMRC Approved Mileage Allowance of 45p per mile, but the field accepts any value so a company policy of 30p, an EU per-kilometre rate, or a flat internal rate all work the same way. You also pick which month your tax year starts — April for the UK, January elsewhere — so the year filter and CSV group correctly.
Then you log trips. Each entry captures the date, where you drove from and to, the distance, a free-text purpose and an optional category tag such as “Client visit” or “Site survey”. Tick round trip and the tool doubles the distance for the claim while still recording the single leg you typed, so the maths stays auditable. As soon as a trip is saved it appears under its month, with a running mileage and reimbursement subtotal, and the headline figures at the top update live.
Everything persists in your browser via localStorage, so your log is still there when you come back. You can edit or delete any trip inline, filter the whole log down to a single tax year, and when it is time to claim, export a CSV that opens cleanly in Excel, Google Sheets or Numbers — complete with a totals row your accountant or expenses system can read directly. No account, no upload, no spreadsheet template to maintain.
Example
Imagine a freelance designer in the UK who claims at the HMRC rate of 0.45 per mile. In one month
they drive a 38-mile round trip to a client (logged as 19 miles each way, marked round trip), a
22-mile collection from a supplier, and a 16-mile round trip to a co-working day. The log shows:
| Trip | Logged | Claimable | Amount |
|---|---|---|---|
| Client kickoff (return) | 19 mi | 38 mi | £17.10 |
| Supplier collection | 22 mi | 22 mi | £9.90 |
| Co-working day (return) | 16 mi | 32 mi | £14.40 |
| Month total | 92 mi | £41.40 |
At year end they filter to the current tax year, hit Export CSV, and hand the file straight to their bookkeeper. Every figure is calculated in the browser — no distances or amounts are uploaded or stored anywhere else.