EV Salary Sacrifice for Employers: Costs, NI and Setup

Ask who leases the car, who pays the supplier and what the employee agrees to give up from cash salary. Record the term, mileage, all initial and recurring charges, services included and the party responsible for later charges.

A supplier’s “cost-neutral” label is a claim to check against your payroll and contract. Get the gross sacrifice and employer invoice separately. If the quote already incorporates an employer NI saving, do not subtract that saving again.

The general small-employer setup guide covers contract changes, minimum wage and pension duties. This page adds the car-specific costing and reporting questions.

Reducing contractual cash salary can reduce employer Class 1 NI. The reduction depends on the relevant earnings, employee category, employer reliefs and actual amount payable after Employment Allowance.

The car can also create a separate Class 1A NI cost for the employer. For an otherwise unadjusted, fully electric car available for the whole 2026/27 tax year, HMRC’s benefit percentage is 4%. Apply it to the appropriate car-benefit value, normally based on list price, not the monthly lease rental.

Fully electric cars use normal car-benefit valuation under HMRC’s low-emission-car exception. Do not substitute the salary sacrificed for that car-benefit amount.

At a confirmed £35,000 P11D value, the illustration’s taxable car benefit is £35,000 × 4% = £1,400. At the 2026/27 Class 1A rate of 15%, employer Class 1A is £210 a year. This is separate from the employee’s Income Tax on that benefit. The 4% percentage is not a 4% tax rate on salary.

Fictional 2026/27 annual illustration: a category A employee gives up £6,000 from a £40,000 salary. The complete employer car-package cost is also assumed to be £6,000 a year, after all applicable VAT effects and including the package charges. This is an assumed input, not a supplier quote. The fully electric car has a £35,000 P11D value, is available all year and has no benefit-value adjustments.

Assume no special employer NI reliefs, no marginal levy, and Employment Allowance unavailable or already fully used. Ordinary employer pension funding and other unchanged costs are held constant and omitted. Minimum-wage eligibility has been checked separately.

Annual employer EV scheme illustration before Corporation Tax

Item	Before	With EV exchange
Contractual cash salary	£40,000.00	£34,000.00
Employer Class 1 NI: (salary − £5,000) × 15%	£5,250.00	£4,350.00
Complete employer car-package cost	£0.00	£6,000.00
Employer Class 1A: £35,000 × 4% × 15%	£0.00	£210.00
Total of these employer costs	£45,250.00	£44,560.00

The model saves £690 a year, or £57.50 a month on average: £900 employer Class 1 reduction, less £210 Class 1A. The £6,000 salary reduction funds the assumed £6,000 package, so neither is counted as an extra saving on its own.

This uses annual NI thresholds for planning. Actual earnings-period thresholds, rounding, cash-flow dates and benefit adjustments can differ. A different package cost, contribution policy or supplier charge changes the result. The employee’s take-home reduction is a separate calculation; use the employee EV example to explain it.

Employment Allowance offsets employer Class 1 NI, within eligibility and the annual limit. It does not offset Class 1A on the car benefit.

If sufficient unused allowance would cover the whole Class 1 bill both before and after the exchange, the £900 headline reduction in the example produces no NI cash saving. Class 1A still needs to be funded.

Same EV illustration where unused Employment Allowance covers all Class 1 NI

Annual selected costs	Before	With EV exchange
Cash salary plus Class 1 actually payable	£40,000.00	£34,000.00
Car package plus Class 1A	£0.00	£6,210.00
Total after the allowance	£40,000.00	£40,210.00

On these assumptions the employer pays £210 more a year, before other costs. If the allowance is only partly available, calculate the actual business-wide difference rather than assuming either extreme.

Ask the supplier to show invoice VAT, the amount recoverable by your business and the resulting employer cost. HMRC’s motoring VAT notice has specific restrictions for leased cars available for private use. Do not treat a VAT-exclusive headline rental as the final cost, or assume every business can reclaim the same amount.

Apprenticeship Levy is 0.5% of the relevant pay bill, with a £15,000 annual allowance and connected-employer rules. The usual payment threshold is a pay bill above £3 million, including relevant connected employers. It is not a cost every small employer pays. Where the full £6,000 salary reduction genuinely reduces levy payable at the margin, the extra reduction is £30 a year. Benefits liable to Class 1A are excluded from that levy pay bill.

Confirm whether pension funding and salary-related benefits use original reference salary or reduced cash salary. Any change is a separate effect to cost and explain, not an automatic saving to add to the table. Get the pension scheme’s answer, particularly for a defined benefit scheme.

Request the actual terms for resignation, redundancy, dismissal, death, long-term sickness and family leave. Ask who owes the lease payments, which cover applies, what it excludes, and whether the employer can transfer or reallocate the vehicle.

Include early-termination charges, insurance excesses, excess mileage, damage, missed payments and administration charges in the review. A provider’s protection package may have conditions or limits; use its written wording rather than assuming every departure is covered.

Check how the arrangement works when pay falls and salary sacrifice can no longer be supported. Agree the employee communication and payroll process before the car is ordered. Do not assume the final payslip can automatically recover every outstanding lease cost.

Follow HMRC’s company-car reporting route for the benefit and employer Class 1A. For the current 2026/27 service, HMRC’s guidance limits voluntary payrolling to benefits registered before 6 April 2026. Properly payrolled benefits do not need a P11D for that benefit, but the employer still needs to work out Class 1A and complete P11D(b).

HMRC’s policy paper, updated 28 October 2026, says registration for voluntary payrolling is due to re-open on 5 November 2026, with an option to payroll Class 1A NI as well. Ask your payroll provider which tax year a new registration would apply to before relying on it. Confirm car availability dates, benefit value and any later changes.

The policy paper schedules mandatory payrolling for company cars, vans, car and van fuel, and medical benefit from 6 April 2027. Most remaining benefits are due to follow from 6 April 2028, with employer-provided loans and accommodation outside those mandatory phases and transitional exceptions retained. Use HMRC’s implementation guidance with your payroll provider. Also review the benefit percentage and employer NI assumptions for each tax year covered by a longer lease.

• One itemised quote with term, mileage, car-benefit value, services, VAT treatment and all charges.
• Separate employer Class 1 reduction, Employment Allowance effect, Class 1A and any levy reduction actually available.
• Written pension and reference-salary policy, employee eligibility and minimum-wage process.
• Contract responsibilities, absence arrangements and departure costs.
• Current-year reporting route, a tested first payroll and readiness for the next tax year.

Ask: “Please reconcile the total employer cost before and after the scheme, identify every assumption behind any NI saving, and show which charges remain if the employee leaves.” Keep the employee’s car-choice comparison separate from the business’s costing.