On 21st May 2026, Chancellor Rachel Reeves announced a 10p per mile (ppm) increase to the tax-free mileage rates, backdated to 6th April 2026. For cars and vans, the Approved Mileage Allowance Payment (AMAP) rate for the first 10,000 business miles rises from 45ppm to 55ppm — the 25ppm rate above 10,000 miles is unchanged. It’s the first change in well over a decade: the 45ppm rate had been frozen since 2011.
When is Tripcatcher implementing the changes
Tripcatcher will switch its HMRC Rate from 45ppm to 55ppm on 1st July 2026. We chose 1st July rather than making the change straight away to give everyone time to prepare — businesses that reimburse mileage need notice to plan for the higher cost.
Impact on your mileage expenses
Any business mileage you’ve recorded since 6th April 2026 is currently saved at 45p per mile. Because the new rate is backdated to 6th April, you’re entitled to a further 10p per mile on every one of those trips. There’s nothing you need to change yourself — we’ll handle this for you with a report (see below).
How do I claim the 10p per mile shortfall
For every trip recorded between 6th April and 1st July there will be a 10p per mile shortfall. Once we’ve switched to the 55p rate, we’ll make a report available that totals this shortfall so you can claim it in one go. We’re finalising the details and will be in touch with exact steps before 1st July.
Please do not manually adjust these trips or claim the extra 10p directly in Xero, Dext or Crunch. It will not synchronise with Tripcatcher and the shortfall report will be wrong.
If you have any questions, contact support@tripcatcherapp.com.
This article is general information, not tax advice — please check with HMRC or your accountant for your circumstances.
