Electric Car Salary Sacrifice: How to Check the Costs Before You Sign

An electric car through work can come with tax advantages, but the advertised saving does not tell you whether the agreement fits your budget. The salary you give up, company-car tax, package inclusions and exit charges all affect what you pay.

Before joining a scheme, ask for a personalised quote and compare its total cost with your alternatives, including keeping your current car.

How electric car salary sacrifice works

Salary sacrifice means agreeing to reduce your contractual cash salary in exchange for a benefit. Under an electric car scheme, your employer provides access to a car.

Reducing your cash salary can reduce Income Tax and employee National Insurance. However, a car available for private use normally creates a separate taxable benefit. Private use includes commuting.

Your employer must offer the arrangement, and participation depends on its rules. Salary sacrifice must not reduce your cash earnings below the applicable National Minimum Wage.

Commercial providers include EZOO, whose website offers employer electric car salary sacrifice schemes and business EV subscriptions. These are different arrangements: check which product a quote covers, who signs the agreement and which eligibility conditions apply.

Understand the company-car tax

For the UK tax year from 6 April 2026 to 5 April 2027, the company-car benefit percentage for a car with zero CO₂ emissions is 4%.

This is used to calculate the taxable benefit. It is not a 4% tax bill on the car’s price, nor a discount on its monthly cost.

For a straightforward full-year example, suppose the car’s value for company-car tax purposes is £40,000. Applying 4% gives a taxable benefit of £1,600. If that entire benefit falls within a 20% Income Tax band, the tax would be £320 a year, equivalent to about £26.67 a month.

That amount is only the tax on the benefit. You also need to account for the reduction in take-home pay caused by giving up salary.

Your actual calculation depends on your circumstances. Scottish Income Tax bands differ, and adjustments can apply where a car is available for only part of a year. Plug-in hybrids have different benefit calculations, so do not assume the zero-emission percentage applies.

Ask for a cost projection covering every tax year in the agreement, rather than assuming the starting tax cost will remain unchanged.

Compare the effect on your take-home pay

A useful quote should show:

• The monthly gross salary you would give up.
• The estimated Income Tax and employee National Insurance reductions.
• The additional company-car tax.
• The resulting monthly reduction in take-home pay.
• Any payments or running costs outside payroll.

Check whether the advertised monthly figure already includes company-car tax. Otherwise, you could overlook it or count it twice.

There is no universal savings percentage. The outcome depends on your earnings, the vehicle, the scheme’s pricing and what you compare it with.

For a personal lease comparison, use the same car, agreement length and mileage allowance. Include initial payments and services that one quote includes but the other leaves out. If comparing with buying, also consider the car’s expected resale value at the end of the period.

A new car can still increase your household spending even when its tax treatment is favourable.

Check what the package includes

An inclusive monthly price needs a clear definition. Ask for written confirmation of:

• Insurance: eligible drivers, excesses and exclusions.
• Maintenance: servicing, tyres, repairs and any limits on cover.
• Breakdown assistance: the service provided and relevant exclusions.
• Vehicle tax: whether it is included and how changes are handled.
• Mileage: the allowance and charge for exceeding it.
• Return condition: how damage and wear are assessed.

Budget separately for charging unless the agreement explicitly includes it. Consider where you would charge, the tariffs available and any installation cost for a home charger.

Check which charges can change during the agreement. A fixed vehicle payment does not necessarily make every motoring expense fixed.

Ask what happens if your circumstances change

Before signing, find out what happens if you resign, are made redundant, take parental leave or need to reduce your hours.

Ask who is responsible for early termination charges and request the terms of any protection offered. Check exclusions, waiting periods and limits rather than relying on a general promise of cover.

Salary sacrifice can also affect statutory pay and salary-related benefits. Ask payroll whether pension contributions and other employment benefits use your original salary or your reduced cash salary.

Get these answers before committing, particularly if you expect changes to your work or family circumstances during the agreement.

What employers need to check

Employers should assess the arrangement’s total cost and contractual responsibilities.

A reduction in salary can reduce employer Class 1 National Insurance on cash pay. Separately, employers normally pay Class 1A National Insurance on the taxable company-car benefit. These are different charges.

Provider fees, administration and liabilities when an employee leaves also matter. Employers should establish who pays each cost and how the arrangement will be reported through payroll.

For employees, the practical next step is to obtain a written quote, have payroll check the calculation and compare the full cost against a realistic alternative. The decision should fit your budget and expected car use, as well as your tax position.