Still time to repay private fuel costs and avoid tax charge

Use a company car for personal trips? Avoid a hefty tax charge by reimbursing your employer for private fuel by 6 July 2025. It’s called “making good” – and it could save you a chunk in tax if your private mileage is low.

To avoid the car fuel benefit charge, an employee must "make good" the cost of all fuel used for private journeys no later than 6 July following the end of the relevant tax year. This means that the employee needs to reimburse the employer for any private fuel used during the 2024-25 tax year by this deadline to prevent any tax liabilities related to the fuel benefit.

When an employee is provided with fuel for private use in a company car, the default rule is that the employee is required to pay the car fuel benefit charge. This charge is calculated based on the car's CO2 emissions rating and is applied to the car fuel benefit multiplier. This has just increased to £28,200 for 2025-26 (2024-25: £27,800).

However, the car fuel benefit charge can be avoided if the employee repays the employer for all private fuel, a process known as "making good." Private fuel use includes fuel used for commuting to and from work.

By making good, HMRC will accept that no car fuel benefit charge applies, allowing the employee to avoid the income tax charge on private car fuel. Typically, it is more beneficial for an employee to reimburse the employer for the private fuel rather than pay the Income Tax charge, especially if private mileage is low.

If the employee does not demonstrate that they have repaid all fuel costs associated with private journeys (including commuting), the car fuel benefit charge will still apply. Therefore, it is crucial for employees to maintain accurate records of private mileage and ensure that all fuel costs for private use are fully repaid by the deadline to avoid unnecessary tax charges.

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