Fuel Benefit Calculator
Estimate your company car fuel benefit tax (Benefit in Kind). Calculate your annual and monthly tax payable based on HMRC multipliers.
Calculate Your Fuel Benefit Tax
Enter your car’s details and tax information to get a realistic estimate of the additional tax you will pay for company-provided fuel.
Tax Specifications
Enter your car and income details
Fuel Benefit Evaluation
Estimated additional tax payable
HMRC Fuel Benefit Multipliers
The fixed multiplier set by HMRC for each tax year, used to calculate the cash equivalent of the fuel benefit.
| Tax Year | Fuel Benefit Multiplier | Example: 20% BiK Car | Example: 2% BiK Car (EV) |
|---|---|---|---|
| 2024/2025 | £27,800 | £5,560 | £556 |
| 2023/2024 | £25,300 | £5,060 | £506 |
| 2022/2023 | £24,600 | £4,920 | £492 |
| 2021/2022 | £24,600 | £4,920 | £492 |
Fuel Benefit FAQ
Answers to the most frequently asked questions about company car fuel tax in the UK.
The fuel benefit charge is a tax applied when an employer provides fuel for a company car that is used for private journeys. It is calculated as a percentage of a set HMRC multiplier, based on the car’s CO2 emissions (the same percentage used for the company car Benefit in Kind tax).
The fuel benefit value is calculated by multiplying the HMRC fuel benefit multiplier (e.g., £27,800 for the 2024/25 tax year) by the car’s Benefit in Kind (BiK) percentage. Your personal tax payable is then calculated by applying your income tax rate (20%, 40%, or 45%) to this fuel benefit value.
If you pay for all your own private fuel using your own money (and can keep receipts as proof if requested by HMRC), the fuel benefit charge is £0. You should inform your employer or HMRC to ensure you are not incorrectly taxed.
Indirectly, yes. The fuel benefit uses the same Benefit in Kind (BiK) percentage as the company car itself. Electric cars have a much lower BiK percentage (e.g., 2% for 2024/25), resulting in a significantly lower fuel benefit charge compared to petrol or diesel cars with higher CO2 emissions.