Understanding The Results

The calculator displays the vehicle P11D value, Benefit-In-Kind (BIK), annual company car tax, fuel benefit where applicable and employer National Insurance contributions.

For a detailed explanation of company car tax, P11D values, Benefit-In-Kind (BIK), fuel benefit and employer National Insurance, click the button above.

P11D Value

The P11D value is the taxable value of the company car used to calculate the Benefit-In-Kind (BIK). It is normally based on the manufacturer's list price plus delivery charges and certain accessories.

Benefit-In-Kind (BIK)

The Benefit-In-Kind (BIK) is the taxable benefit of having a company car available for private use. The BIK percentage depends on the vehicle's emissions, fuel type and electric range where relevant.

Company Car Tax

Company car tax is the income tax due on the Benefit-In-Kind (BIK). The amount payable depends on the employee's personal tax rate.

Fuel Benefit

If your employer provides fuel for private journeys, an additional taxable fuel benefit may apply. The calculator shows the fuel benefit and the associated tax where relevant.

Employer National Insurance

Employers normally pay Class 1A National Insurance Contributions on company car benefits and fuel benefits. The calculator shows the estimated employer cost.

Important Notes

Calculations are based on the standard vehicle specification held within the DriveSmart database.

If your company car includes factory options or accessories, the P11D value may be higher than the standard vehicle shown here.

Hybrid vehicle benefit calculations may change from April 2028 as emissions values are updated under European legislation.

Related Company Car Tools

DriveSmart provides a range of company car, salary sacrifice and vehicle comparison tools:

• Company Car Tax Explained – understand P11D values, Benefit-In-Kind (BIK), company car tax, fuel benefit and employer National Insurance.
• Company Car Search – search for cars using company car tax, emissions and Benefit-In-Kind data.
• Compare Company Car Tax – compare company car benefit and tax for multiple vehicles side-by-side.
• Salary Sacrifice Calculator – compare salary sacrifice with traditional company car arrangements.
• Car Running Costs Calculator – estimate depreciation, fuel, maintenance and ownership costs.
• Van Running Costs Calculator – compare the running costs of commercial vehicles.