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Car & Fuel Benefits Calculator

Estimate company-car and private-fuel benefits using a confirmed benefit-in-kind percentage.

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Use the car's confirmed percentage

The 2026/27 car-fuel benefit multiplier is £29,200. Car benefit is list price multiplied by the appropriate percentage; fuel benefit uses that percentage on the multiplier. Electricity does not attract the car-fuel benefit charge.

Assumes the car and any fuel benefit apply for the whole year, with no capital or private-use contributions and no changes of vehicle. It multiplies benefits by your chosen marginal tax rate; it does not model crossing tax bands or the Personal Allowance taper. Employer Class 1A NI is estimated at 15%.

Find your percentage with HMRC's company-car calculator. Sources: 2026/27 fuel multiplier and Class 1A and electricity guidance.

Tax year: 6 April 2026 to 5 April 2027. See our 2026/27 tax rates and sources. This is an estimate under the assumptions above, not a tax return or individual advice.

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