Log business journeys and compare them with the date-versioned HMRC approved mileage payment benchmark. This does not calculate a cash tax refund.
HMRC's approved amount is the tax-free benchmark for mileage allowance payments when an employee uses their own vehicle for qualifying business travel. Mileage Allowance Relief, where available, concerns the unused qualifying balance after employer payments; it is not a refund of the full benchmark. Eligibility and rules also differ for self-employed simplified expenses and company vehicles. Keep evidence and check the current HMRC route for your circumstances.
Part of Builder Tools Utilities — construction tools for UK tradespeople.