Claiming the correct tax relief for work mileage

Employees who use their own vehicle for business journeys may receive Mileage Allowance Payments (MAPs) from their employer. These payments can be made tax-free up to HMRC’s approved amount, calculated by multiplying business miles travelled by the relevant rate per mile.

Effective since 6 April 2026, the approved mileage rate for cars and vans increased to 55p per mile (from 45p) for the first 10,000 business miles, with 25p per mile (no change) applying above this threshold. Motorcycle mileage remains at 24p per mile and bicycle mileage at 20p per mile.

If an employer pays more than the approved amount, the excess must be reported to HMRC and taxed through payroll. If an employer pays less than the approved amount, the employee may be able to claim Mileage Allowance Relief on the unused balance.

Separate National Insurance rules apply to mileage payments. Employers may need to pay Class 1 National Insurance on amounts above the qualifying amount, although no National Insurance is due where payments are below the threshold.

There is an additional 5p per passenger per business mile for carrying fellow employees in a car or van on journeys which are also work journeys for them. Only payments specifically for carrying passengers count and there is no relief if you receive less than 5p or nothing at all.