What is Salary Sacrifice?
An arrangement where you give up part of your salary in exchange for a non-cash benefit, saving tax and NI.
Key Facts
- ✓ Reduces gross salary before tax and NI are calculated
- ✓ Saves income tax and employee NI on the sacrificed amount
- ✓ Employer also saves on employer NI (15%)
- ✓ Most common for pension contributions
- ✓ Also available for Cycle to Work, childcare, electric cars
- ✓ Lower reported salary may affect mortgage applications
Explanation
Salary sacrifice is an arrangement between you and your employer where you agree to reduce your contractual gross salary in exchange for a non-cash benefit — most commonly additional employer pension contributions, but also childcare vouchers, Cycle to Work schemes, or ultra-low emission company cars. Because the salary reduction happens before income tax and National Insurance are calculated, you save both taxes on the sacrificed amount. Your employer also saves on employer NI (15%). For example, if a higher rate taxpayer sacrifices £500/month into their pension, they save £200 in income tax and £40 in NI that they would otherwise have paid. The trade-off is that your reported salary is lower, which can affect mortgage applications, statutory pay calculations, and any benefits linked to salary. Your employer must ensure your remaining salary does not fall below National Minimum Wage.
Try the calculator: Use our free calculator to see how salary sacrifice affects your finances.
Salary Sacrifice Calculator →Other Glossary Terms
The system HMRC uses to collect income tax and National Insurance directly from employees' wages.
National InsuranceA UK tax on earnings and self-employed profits that funds the state pension, NHS, and benefits.
Personal AllowanceThe amount of income you can earn each year before paying income tax — currently £12,570.
Basic Rate (20%)The 20% income tax rate applied to taxable income between £12,571 and £50,270.
Higher Rate (40%)The 40% income tax rate applied to taxable income between £50,271 and £125,140.
Additional Rate (45%)The 45% income tax rate applied to taxable income above £125,140.