Company Car Tax Calculator
Estimate company car Benefit in Kind tax from the car value and tax rates.
Taxable benefit
£11,100.00
- Estimated annual tax
- £2,220.00
- Monthly equivalent
- £185.00
For 2026/27. Enter the appropriate percentage from the vehicle's HMRC company-car table; zero-emission cars are 4% and the maximum is 37%. This estimate excludes employee capital contributions.
v1.0 · Reviewed September 2026
How this is worked out
The taxable benefit is the car's list price × the appropriate percentage for that vehicle, capped at 37%. The tax is that benefit × your income tax rate.
Worked example
- List price £30,000
- Appropriate percentage 37%
- Tax rate 20%
30,000 × 37% = £11,100 benefit, and 11,100 × 20%
£11,100.00 taxable benefit, costing £2,220.00 a year in tax
Assumptions and limits
- You supply the appropriate percentage for the car, which depends on its CO2 emissions and electric range. Zero emission cars are 4% and the maximum is 37%.
- List price should be the P11D value including delivery and accessories.
- Capital contributions, private fuel benefit and part-year availability are not included.