What is the P11D value of a company car?

The P11D value is the official list price of the vehicle, including factory options, delivery, and VAT, minus the first-year registration fee and road tax.

Who pays Class 1A National Insurance on company cars?

Employers pay Class 1A NICs at 13.8% on the taxable BiK benefit value of the company car provided to the employee.

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UK Company Car Benefit-in-Kind (BiK) & Electric Vehicle Tax Calculator

Calculate annual and monthly personal income tax on company cars based on P11D list value and HMRC CO2 emissions BiK tax bands (2% for zero-emission electric vehicles up to 37% for high-emission petrol/diesel).

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Parametri di Input

In tempo reale

Vehicle P11D List Value (Including VAT & Options) (£)

£/mo

Selezione rapida:

HMRC CO2 BiK Percentage Rate (% - 2% for EV, ~25-37% for ICE)2 %

2 %37 %

Employee Income Tax Band

Risultato CalcolatoCompany Car Benefit-in-Kind (BiK Tax)

Monthly Company Car Tax Cost Deducted via PAYE

30£/mo

Total Annual Personal BiK Tax Liability

360 £/mo

P11D Taxable Benefit Value (£/year)

900 £/mo

Dettaglio del Calcolo

Taxable BiK Value

900 £/mo

Employer Class 1A NIC

124.2 £/mo

Monthly Net Cost

30 £/mo

Metodologia di Calcolo

Taxable BiK Value = P11D Vehicle Value * (BiK Band% / 100). Annual BiK Tax = Taxable BiK Value * Marginal Income Tax Rate% (20%, 40%, or 45%). Monthly Tax = Annual BiK Tax / 12.

Disclaimer Legale e Informativo

Electric vehicles (0g/km CO2) benefit from a low 2% BiK rate (rising to 3% in 2025/26 and 4% in 2026/27).

Questo calcolatore è progettato solo a scopo educativo e informativo. I risultati non costituiscono una consulenza finanziaria o legale vincolante.

Domande Frequenti

Zero-emission EVs have a Benefit-in-Kind (BiK) rate of only 2% to 3%, costing higher-rate employees under £30-£50/month in tax on a £50,000 car.

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UK Company Car Benefit-in-Kind (BiK) & Electric Vehicle Tax Calculator

Parametri di Input

Dettaglio del Calcolo

Metodologia di Calcolo

Disclaimer Legale e Informativo

Domande Frequenti

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