How is company car tax calculated?

Multiply the car’s P11D list price by the HMRC appropriate percentage for its CO2 emissions (and electric range for plug-in hybrids) to get the taxable benefit value, then apply your income tax rate: 20%, 40% or 45%. Example: a £30,000 petrol car at 120g/km (31%) gives a £9,300 taxable benefit, costing a 40% taxpayer £3,720 a year.

How does the Company Car Tax Calculator work?

Enter your figures in the fields above and the result updates instantly. All calculations use HMRC 2026/27 appropriate percentages, including the electric-range-dependent rates for plug-in hybrids.

Is this calculator free?

Yes. SenseCalc calculators are completely free with no registration required.

Are results before or after tax?

Unless stated otherwise, results shown are gross figures before income tax and National Insurance. Always verify with HMRC or a qualified professional.

Updated 6 April 2026

Company Car Tax Calculator · Free UK 2026/27

Calculate company car BIK tax by CO2 emissions and list price. Free UK company car tax calculator for 2026/27.

✓ Free to use✓ Updated 2026/27✓ HMRC aligned✓ Instant results

Company Car Tax Calculator

Enter your details below. Your result updates instantly

Car list price (P11D value)

CO2 emissions

g/km

Your income tax band

Annual company car tax

£—

Enter list price and CO2 above

Monthly

£—

Weekly

£—

Daily

£—

Hourly

£—

2026/27 HMRC appropriate percentages: pure EVs 4%; plug-in hybrids (1–50g/km) 4%–16% depending on electric range. Note the official 2026/27 quirk that 155–159g/km is 38%, above the 37% maximum that applies from 160g/km. Confirm with HMRC or your accountant.

How to Use This Calculator

Enter your car's P11D list price and CO2 emissions and your result will appear instantly. For plug-in hybrids (1–50g/km) you'll also be asked for the car's electric driving range, because the 2026/27 rate depends on it, from 4% at 130 miles or more up to 16% under 30 miles. Pure electric cars (0g/km) pay 4%. All calculations use the latest HMRC 2026/27 rates. Results are estimates for guidance only, always verify with HMRC or a qualified professional.

Frequently Asked Questions

For 2026/27 the appropriate percentage is 4% for a pure electric car (0g/km). Plug-in hybrids (1–50g/km) pay 4% with an electric range of 130 miles or more, 7% at 70–129 miles, 10% at 40–69 miles, 14% at 30–39 miles, and 16% under 30 miles. Above 50g/km the rate starts at 17% (51–54g/km) and rises one percentage point per 5g/km band: 22% at 75–79g/km, 32% at 125–129g/km, 38% at 155–159g/km (an official quirk above the cap), with a maximum of 37% from 160g/km.