Mileage log template
HMRC's flat rate needs a record of your business miles. This is a blank sheet with the columns you need: print it and keep it in the glovebox.
Mileage log template
Runs entirely in your browser. Nothing you type leaves your device — no accounts, no cookies, no tracking.
What to write
Date, where you started, where you went, why, and the miles. One line per journey, written as soon as you can.
Business miles only
Trips to clients, to buy supplies and between jobs count. Your normal commute does not.
Total it each tax year
The flat rate depends on how many miles you drive in the tax year, so the total from 6 April is what you need.
Keep the number for every month
SideTill is the simple record of your side hustle: log the job, send the invoice, record the money when it comes in, and see whether the month actually made you money. It also shows your best month, so you can tell a bad month from a bad habit.
Get SideTill
No account. No sign-up. Your data stays on your phone. The basics are free to use.
Questions
Can I fill it in on my phone?
Printing it gives you a blank sheet to write on. A note on your phone also works as long as it has the same columns.
Do I need the odometer reading?
Not for the flat rate. Many people note it anyway, so the log is easy to check.
What is the rate?
The mileage allowance calculator on this site shows the 2026/27 rates and does the sum.