Company car and electric vehicle tax calculator 2026/27
Compare company-car Benefit in Kind with a cash allowance using list price, CO₂, electric range and your other income.
How the Company car and EV estimate works
The company-car estimate multiplies the official list price by the 2026/27 appropriate percentage for CO₂ emissions and electric range, then estimates the extra Income Tax beside other income. It compares that with an entered cash allowance.
Rules checked
Read the checking method
What the result includes
- Zero-emission and 1–50g/km electric-range bands
- CO₂ bands up to the 37% cap
- Company-car tax versus taxable cash allowance
What to have ready
- Official P11D list price including relevant accessories
- Certified CO₂ emissions and zero-emission range
- Availability dates and employee capital contributions, checked separately
Questions about Company car and EV
Should the discounted purchase price be entered?
No. Company-car benefit generally uses the manufacturer’s official list price plus relevant accessories, not the employer’s purchase price.
Does this include employer-provided private fuel?
No. Private-fuel benefit is a separate charge unless the employee makes good all private fuel under the applicable rules.
About this estimate
Accessories, availability days, private contributions, diesel supplements, fuel benefit, optional remuneration and payroll timing are not fully modelled.