2026/27 employer benefits toolkit
Company Car, Van & P11D Tax Calculators
Start with the decision you need to make: price a company vehicle, compare an EV scheme, test free fuel, or calculate the employer's P11D(b) liability. Every tool uses the same central HMRC-aligned rates.
These tools cover the benefit charge on a vehicle you provide. For the relief on buying one, see capital allowances on cars — the rate turns on CO2 emissions and the purchase date, and cars are shut out of the Annual Investment Allowance entirely.
Company Car Tax Calculator
P11D list price, CO₂ percentage, diesel supplement and EV BIK.
Open calculator →EV Salary Sacrifice Calculator
Real net cost after PAYE, NI, student loan and EV BIK, compared with a personal lease.
Open calculator →Company Car vs Cash Allowance
Compare the car's BIK cost with after-tax cash and private ownership costs.
Open calculator →Car Fuel Benefit Calculator
Find the tax and private-fuel break-even point using the HMRC multiplier.
Open calculator →Company Van Tax Calculator
Van and fuel flat charges, electric and restricted-use exemptions, employee and employer tax.
Open calculator →P11D Benefits Calculator
Combine cars, fuel, vans, medical insurance, loans and accommodation.
Open calculator →P11D(b) Class 1A NI Calculator
Employer liability across benefits and termination awards, with filing and payment dates.
Open calculator →The calculation chain
01 · VALUE
Work out the benefit's HMRC cash equivalent.
02 · EMPLOYEE
Apply the employee's income-tax position to the benefit.
03 · EMPLOYER
Calculate Class 1A NI on liable benefits.
04 · REPORT
Payroll or report the benefit under the rules for that year.
2027 payrolling change
HMRC is phasing in mandatory payrolling from 6 April 2027. The first phase covers company cars, car fuel, vans, van fuel and medical benefits; most other benefits follow later. The underlying taxable benefit and employer Class 1A liability still need to be calculated.
Read HMRC Agent Update 145 →