Estimate a company car Benefit-in-Kind value for 2026/27, then see the income tax and take-home pay impact alongside salary sacrifice, student loan and taxable benefit settings.
Company car BIK estimator
Enter the car list/P11D value, CO₂ emissions and electric range. This estimates the 2026/27 taxable benefit and pushes it into the main taxable benefits field below.
£
Mainly used for 1–50g/km plug-in hybrids. For pure EVs, CO₂ should be 0.
£
Optional annual contribution reducing the taxable benefit estimate.
Scope: uses the 2026/27 HMRC petrol/hybrid/zero-emission percentage table. Diesel supplements, fuel benefit and unusual adjustments are not modelled in this quick estimator.
£
Enter annual cash pay before tax. Salary quick links always use annual salary, never hourly rate.
£
Use for non-cash benefits such as a company car benefit value. Benefits increase tax but are not added to cash take-home.
Income Allocation0% Cash Take-Home
Results compare your salary sacrifice against the original gross wage, so National Insurance and tax savings are visible.
Gross Cash Pay£0.00
Salary Sacrifice Pension- £0.00
Taxable Benefits£0.00
Adjusted Income for Tax£0.00
Personal Allowance Used£0.00
Taxable Income£0.00
Income Tax Due- £0.00
Estimated tax cost of benefits- £0.00
National Insurance- £0.00
NI without salary sacrifice£0.00
NI saved by salary sacrifice+ £0.00
Income tax saved by sacrifice+ £0.00
Student loan reduction from sacrifice+ £0.00
Cash take-home change vs no sacrifice£0.00
Tax/NI/loan saving from sacrifice+ £0.00
Student Loan- £0.00
Net Cash Take-Home£0.00
Net Cash + Pension Value£0.00
Scope: This calculator estimates England, Wales and Northern Ireland PAYE income tax, employee National Insurance and salary-sacrifice pension effects for 2026/27. Scottish income tax rates, exact payslip timing differences, tax-code adjustments and employer pension extras are not included.
How to use the company car BIK calculator
Use the BIK estimator to calculate a 2026/27 taxable company car benefit from the car list/P11D value, CO₂ emissions and electric range. The estimator copies the taxable benefit into the main calculator so you can see the income tax and take-home pay impact.
Important limits
This quick estimator uses the HMRC 2026/27 petrol, hybrid and zero-emission company car percentage table. It does not yet model diesel supplements, private fuel benefit, vans, multiple cars or unusual adjustments. If you already know your exact taxable benefit from payroll or a P11D, you can enter that value directly in the Taxable Benefits field.
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Extra annual salary examples are tucked away here to keep the main calculator page clean. These buttons still use annual salary mode, not hourly mode.
Frequently Asked Questions
Which tax year does this calculator use? +
It uses the 2026/27 UK tax year for England, Wales and Northern Ireland estimates.
Does salary sacrifice reduce National Insurance? +
In this calculator, yes. The pension percentage is treated as salary sacrifice, so the reduced cash pay is used for both income tax and employee National Insurance estimates.
Does this include Scottish income tax? +
No. Scottish income tax rates and bands are different and are not included in this version.
Why might my payslip be slightly different? +
Payroll systems use pay-period thresholds, tax codes and rounding rules. This calculator gives a strong annual estimate, not payroll advice.