Salary Sacrifice Calculator UK 2026/27

What is salary sacrifice?

Salary sacrifice (sometimes called salary exchange) is an arrangement where you agree to reduce your gross salary in exchange for a non-cash benefit — typically a pension contribution, a bike through Cycle to Work, or an electric vehicle lease. Your employer adjusts your contract so that your pay is reduced before tax and National Insurance are calculated.

The key advantage over simply paying from your net salary is the National Insurance saving. Because your contractual pay is reduced before NI is calculated, you pay less NI on the sacrificed amount. With relief at source pensions, you get income tax relief back, but you still pay full NI. Salary sacrifice saves both tax and NI — making it the most tax-efficient way to fund workplace benefits.

For 2026/27, basic rate taxpayers save 28% (20% income tax + 8% NI) on every pound sacrificed. Higher rate taxpayers save up to 42% (40% tax + 2% NI above £50,270). Your employer also saves 13.8% employer NI on the sacrificed amount — many employers pass this on as an additional pension contribution, effectively giving you free money.

Salary sacrifice cannot reduce your pay below the National Minimum Wage. It may also affect certain state benefits that are calculated on earnings, such as Statutory Maternity Pay, Statutory Sick Pay, and contribution-based Jobseeker’s Allowance. Most employers offer a “pay protection” clause to revert your salary if your circumstances change.

Read more: How to budget your salary in the UK | Best budgeting apps UK 2026

Pension salary sacrifice calculator UK: how it works

Pension salary sacrifice is the most common form of salary exchange in the UK. Instead of contributing to your pension from your net pay (where you get income tax relief but still pay NI), your employer reduces your gross salary and pays the equivalent directly into your pension.

Why pension sacrifice saves more than relief at source

With relief at source (the default for most auto-enrolment pensions), your pension provider reclaims basic rate tax (20%) on your contributions. Higher rate taxpayers claim back the extra 20% via self-assessment. But you still pay full National Insurance on your salary before the contribution is deducted.

With salary sacrifice, because your gross pay is reduced first, you save both income tax and NI. For a basic rate taxpayer, that’s an extra 8% saving. For higher rate taxpayers earning above £50,270, the additional NI saving is 2% — but the income tax saving jumps to 40%, making the total effective saving up to 42%.

Example: £35,000 salary with 5% pension sacrifice

On a £35,000 annual salary, sacrificing 5% (£1,750) to your pension saves £350 in income tax and £140 in NI — a total saving of £490 per year. Your take-home pay only reduces by £105 per month, but £145.83 goes into your pension. If your employer matches at 3%, that’s an extra £52.50 per month of free money.

Use the calculator above to see your exact figures. NHS staff on tiered pension contributions can also use our NHS pay calculator to see take-home pay by band and spine point.

Related: How to budget a £35,000 salary | Budgeting on £50,000

Cycle to Work salary sacrifice calculator

The Cycle to Work scheme lets you get a new bike and accessories through salary sacrifice, saving between 28% and 42% depending on your tax band. Your employer purchases the bike and you “hire” it through monthly salary deductions, typically over 12 or 18 months.

The standard Cycle to Work scheme caps at £1,000, but many employers now offer enhanced schemes (through providers like Cycle Solutions or Green Commute Initiative) that allow bikes up to £5,000 or more — covering electric bikes and high-end road bikes.

At the end of the hire period, you can usually buy the bike for a small residual value (typically 3–7% for bikes over £500). A basic rate taxpayer getting a £1,000 bike saves £280 in tax and NI, making the effective cost just £720. Higher rate taxpayers save even more.

Related: Track all your recurring payments with earmarkIQ

Electric car salary sacrifice calculator UK

Electric vehicle (EV) salary sacrifice has become one of the most popular employee benefits in the UK thanks to the ultra-low Benefit in Kind (BIK) tax rate. For 2026/27, zero-emission vehicles attract just 2% BIK — compared to up to 37% for petrol or diesel cars.

With EV salary sacrifice, your employer leases an electric car and you pay for it through pre-tax salary deductions. You save both income tax and National Insurance on the lease payments. The only additional cost is the BIK tax, which on a £35,000 EV is just £700 per year (2% of P11D value) before applying your tax rate.

For a higher rate taxpayer leasing an EV at £450 per month, the annual tax and NI saving on the lease payments can exceed £2,200. After subtracting the BIK tax cost, the net saving vs leasing privately is typically £1,500–£2,000 per year. Many schemes also include insurance, maintenance, and breakdown cover in the monthly cost.

Related: Budgeting on £60,000 | Civil servant budgeting guide

2026/27 UK tax rates and thresholds

This calculator uses the following HMRC rates and thresholds for the 2026/27 tax year (6 April 2026 to 5 April 2027). These are the rates applied to salary sacrifice calculations throughout this tool.

Personal allowance is reduced by £1 for every £2 of income above £100,000, creating an effective 60% marginal tax rate between £100,000 and £125,140. Salary sacrifice above £100,000 is particularly valuable as it can restore your personal allowance.

Related: Budgeting on £80,000 | Solicitor salary guide | Junior doctor budgeting

Which salary sacrifice scheme is right for me?