Type the P11D price, CO₂ and electric range. Get the 2026-27 appropriate percentage, the driver's income tax and the employer's Class 1A at 15% — before the P11D(b) goes in.
| Appropriate percentage, 2026-27 | — | % |
|---|---|---|
| Car benefit (cash equivalent) | — | £/yr |
| Driver's income tax on the car | — | £/yr |
| Employer Class 1A NIC at 15% | — | £/yr |
| Same car under 2024-25 rates (2% / 13.8%) | — | £/yr |
| Extra employer cost vs 2024-25 | — | £/yr |
| Employer Class 1A over a 3-year lease | — | £ |
| Late P11D(b) penalty, per month | — | £/month |
This page is the working piece. The full pack has everything below.
Type the P11D price, CO₂ and electric range. Get the 2026-27 appropriate percentage, the driver's income tax and the employer's Class 1A at 15% — before the P11D(b) goes in.
UK accountants charge £30–£75 per employee to prepare P11D benefits reporting (2026 UK accountancy fee guides).
Buy the full version — $60It takes a car's P11D list price, CO₂ figure and electric range and returns the 2026-27 appropriate percentage, the cash equivalent, the driver's income tax at 20%, 40% or 45%, and the employer's Class 1A National Insurance at 15%. It also shows the late P11D(b) penalty: £100 per 50 employees, or part of 50, for every month the return is late.
UK payroll managers, fleet administrators and owner-directors of small limited companies who have to put company cars on a P11D and settle the Class 1A on the P11D(b). It is built for the person checking a figure before 6 July, not for a tax adviser rebuilding a whole fleet schedule.
Most still quote 2% for a zero-emission car and 13.8% for Class 1A. Both ended on 5 April 2025: the zero-emission percentage is 4% for 2026-27 and Class 1A is 15%. Published sheets also disagree on the diesel supplement, which is 4%, and they rarely apply the £5,000 capital contribution cap.
Every calculation is free and unlimited, with no key, no watermark and no locked answers, in both the browser popup and the free web page. The $60 licence adds two things on a different axis: saving each car as a .csv working paper you keep, and P11D(b) deadline reminders 30 days, 14 days and one day out.
UK accountancy fee guides for 2026 put P11D benefits reporting at roughly £30 to £75 per employee, charged as an add-on to payroll. Fully managed payroll including P11D processing runs £12 to £25 per employee per month. The licence is $60 once, for one person or team seat, with a 7-day full refund.
One question, answered by the person who built it. Your email only if you want the answer sent.