UK Claim Process Overview
Use this guide to prepare the right inputs before estimating mileage allowance relief.
When relief may apply
Mileage allowance relief can matter when your employer reimburses less than the HMRC approved amount. The relief is based on the shortfall, not the full approved amount.
That means you first need to know the approved AMAP amount for the year and vehicle, then compare it with what you were actually paid.
Preparation steps
Once those inputs are clear, the relief calculator can estimate the approved amount, shortfall, and potential tax relief value.
- Keep journey logs with dates, destinations, and business purpose.
- Confirm the tax year and vehicle type used for the journeys.
- Collect employer reimbursement records before estimating the shortfall.
Continue with tools
Move from policy guidance into the calculator, rate page, or template that fits the same workflow.