How car salary sacrifice schemes work in the UK
A car salary sacrifice scheme allows an employee to exchange a portion of their pre-tax gross salary each month in return for a brand new, fully maintained company lease vehicle.
Because the lease payments are deducted from gross earnings before Income Tax and National Insurance contributions are calculated, employees significantly reduce their overall tax burden. Most employer salary package car schemes are all-inclusive, bundling comprehensive motor insurance, routine servicing, roadside breakdown recovery, and replacement tyres into a single fixed monthly payment.
While traditional petrol and diesel company cars carry high Benefit-in-Kind (BIK) tax rates of up to 37%, pure electric vehicles (BEVs) and ultra-low emission vehicles (ULEVs) benefit from substantial government tax incentives, with EV BIK set at just 3% for the 2025/26 tax year and 4% for the 2026/27 tax year.
Worked example: Leasing a £35,000 EV on a £45,000 salary
Consider an employee in England earning £45,000 gross per year during the 2026/27 financial year who enters an all-inclusive salary sacrifice agreement for a pure electric car with a P11D list value of £35,000 at a gross deduction of £500 per month (£6,000 per year).
Without the vehicle sacrifice, the employee's baseline take-home pay equals £35,919.60 per year (£2,993.30 per month) after standard basic rate income tax (£6,486.00) and Class 1 National Insurance (£2,594.40).
Sacrificing £6,000 gross reduces annual salary to £39,000. Under HMRC rules for zero-emission electric vehicles, the statutory Benefit-in-Kind rate is 4%, creating a taxable benefit value of £1,400 (£35,000 multiplied by 4%). At the employee's basic rate of 20%, the annual BIK company car tax is £280.00.
Meanwhile, reducing gross salary saves £1,200.00 in income tax and £480.00 in employee National Insurance (8% of £6,000), producing £1,680.00 in gross tax and NI relief. Subtracting the £280.00 BIK tax results in net annual savings of £1,400.00 against the £6,000 gross deduction, making the employee's actual net annual cost £4,600.00, or £383.33 per month.
Comparing this to an equivalent private personal lease (£550 per month) with insurance and maintenance (£120 per month) totalling £670.00 per month, the salary sacrifice arrangement delivers £286.67 in net monthly savings, adding up to £3,440.04 saved every year.
Benefit-in-Kind (BIK) rates and the OpRA exemption
In 2017, HMRC introduced Optional Remuneration Arrangements (OpRA) legislation to curb tax advantages on salary sacrifice benefits. However, ultra-low emission vehicles with official CO2 emissions of 75 grams per kilometre or less (including all pure electric cars and qualifying plug-in hybrids) were granted a full statutory exemption from OpRA rules.
For exempt ultra-low emission cars, you are taxed strictly on the published BIK percentage of the vehicle's P11D list price, rather than the higher gross salary sacrificed. This statutory advantage makes electric cars the primary vehicle choice for salary sacrifice arrangements across the UK.
Inputs for the Salary package car calculator
Tax year
The UK tax year applicable to your calculation, determining income tax bands, National Insurance thresholds, and statutory BIK rates.
Gross annual salary (before sacrifice)
Your total yearly employment income before income tax, National Insurance, and salary sacrifice deductions.
Monthly gross salary sacrifice
The contractual gross salary deducted each month by your employer to cover the vehicle lease, insurance, and maintenance.
Vehicle P11D value
The manufacturer's list price including VAT, delivery, and factory fitted options, but excluding road fund licence and first registration fee.
Vehicle powertrain & emissions
The fuel and propulsion category of the car, dictating its official CO2 rating and statutory HMRC BIK tax percentage.
Custom BIK rate
Allows you to enter an exact statutory Benefit-in-Kind percentage if your vehicle has a non-standard emissions rating.
Where you pay income tax
Select Scotland if you reside there, as Scottish income tax rates and thresholds apply to your taxable earnings.
Student loan
Select your active student loan repayment plan to reflect repayments saved by reducing gross salary.
Postgraduate Loan
Indicate whether you hold an active UK postgraduate loan subject to 6% salary deductions.
Private lease quote (per month)
The estimated commercial retail monthly rental for leasing the equivalent car privately through personal contract hire (PCH).
Private running costs (per month)
Estimated private monthly expenditure for fully comprehensive insurance, regular servicing, tyre replacements, and breakdown cover.
CALCULATOR QUESTIONS
Salary package car calculator questions
What is the difference between company car BIK tax and salary sacrifice?
In a salary sacrifice scheme, you give up gross pay to fund a leased vehicle, saving Income Tax and National Insurance on the sacrificed amount. In return, HMRC assesses the vehicle as a Benefit-in-Kind (BIK), adding a nominal taxable benefit based on the car's P11D value and CO2 emissions to your tax code.
Do I pay National Insurance on the car Benefit-in-Kind?
No. Employees do not pay Class 1 National Insurance contributions on non-cash benefits in kind like company cars. Employers pay Class 1A National Insurance on the benefit, but as an employee, you only pay income tax on the taxable BIK value.
Can salary sacrifice bring my earnings below National Minimum Wage?
No. By law, a salary sacrifice arrangement cannot reduce an employee's gross cash pay below the UK National Minimum Wage or National Living Wage hourly rate. Employers must monitor earnings to prevent unlawful pay reductions.
Are maintenance and insurance included in salary sacrifice car packages?
Yes. Most UK salary packaging schemes offer fully bundled packages that incorporate scheduled servicing, mechanical maintenance, road tax, comprehensive motor insurance, roadside assistance, and replacement tyres.