Salary Sacrifice Changes and the Minimum Wage: What UK Workers Need to Know

Understanding the headline rate and salary sacrifice

The headline National Living Wage of £12.71 per hour (for workers aged 21 and over) is the absolute minimum cash pay you must receive for each hour worked. But if your employer offers a salary sacrifice scheme — most commonly for pension contributions — your gross pay on paper may be lower than your contractual rate. This is because salary sacrifice involves a permanent reduction of your salary in exchange for a non-cash benefit, such as an extra employer pension contribution.

It is crucial to understand that the minimum wage is tested on your pay after any salary sacrifice has been applied. As GOV.UK guidance makes clear, “a salary sacrifice arrangement must not reduce an employee’s cash earnings below the National Minimum Wage rates.” If your contractual hourly rate is £13.50, you can sacrifice up to 79p per hour before you hit the £12.71 floor. If your rate is exactly £12.71, you cannot sacrifice anything without breaching the law.

How salary sacrifice interacts with the minimum wage

The National Minimum Wage Regulations 2015 define “pay” for minimum wage purposes as the cash you are contractually entitled to after a valid salary sacrifice. HMRC’s manual states: “Where a salary sacrifice is in place, the worker no longer has entitlement to that amount of pay under their contract. Therefore, their pay for minimum wage purposes is reduced accordingly.” This means the sacrifice is not a deduction from your pay; it is a change to your contractual salary itself.

Employers have a legal duty to cap salary sacrifice deductions so that your remaining cash earnings never fall below the statutory minimum. If they fail to do so, you may have an underpayment of the minimum wage, which can be reported to HMRC. Always check your payslip: a correctly applied salary sacrifice will show a reduced gross salary as the headline figure, not a separate deduction line.

For more detail on how your pay is calculated, see our pay guides and pay data pages.

The upcoming salary sacrifice changes from April 2029

The government announced at Autumn Budget 2025 that from 6 April 2029, employer pension contributions made via salary sacrifice will no longer be fully exempt from National Insurance. Instead, only the first £2,000 of sacrificed salary per tax year will be free of employee and employer National Insurance. Any amount above that cap will be treated as earnings and attract Class 1 National Insurance contributions.

This reform is designed to address the growing cost of the relief, which has risen from £2.8 billion in 2016/17 to £5.8 billion in 2023/24, and is projected to reach £8 billion by 2030/31. According to GOV.UK guidance, an estimated 7.7 million employees currently use salary sacrifice for pensions. Of these, 3.3 million sacrifice more than £2,000 and will be affected by the cap. The average additional employee National Insurance liability for those affected is estimated at £84 in the first year.

Importantly, the £2,000 cap applies to the amount sacrificed, not to the total pension contribution. If you sacrifice £3,000, the first £2,000 remains NI-free, and you and your employer will pay National Insurance on the remaining £1,000. Your pension contributions still receive full Income Tax relief (subject to annual allowance limits). The change does not affect salary sacrifice for other benefits, such as cycle to work or childcare vouchers, which were already restricted in 2017.

What this means for your take-home pay

If you are a higher earner or make large pension contributions via salary sacrifice, your take-home pay will be slightly lower from April 2029. However, 56% of current salary sacrifice users — around 4.3 million people — are fully protected by the £2,000 threshold and will see no change. For those affected, the additional National Insurance is relatively modest, but it is worth reviewing your pension contribution strategy.

You can still contribute as much as you like to your pension, either inside or outside a salary sacrifice arrangement. Traditional employee pension contributions (not via sacrifice) remain unchanged for National Insurance purposes. If you want to avoid the new NI charge, you could reduce the amount you sacrifice to £2,000 or less, and make any additional contributions directly from your net pay (though you would then lose the NI saving on the sacrificed amount).

For workers on lower incomes, the minimum wage floor remains the key constraint. If you earn close to the National Living Wage, you may not be able to use salary sacrifice at all. The reform does not change that rule.

Practical steps

• Check your contract: a valid salary sacrifice must be a permanent contractual change, not an informal payroll deduction. Confirm your employer operates a formal scheme.
• Know your headroom: calculate the difference between your contractual hourly rate and the minimum wage rate for your age. That is the maximum you can sacrifice per hour.
• Review your pension contributions: if you sacrifice more than £2,000 per year, consider whether you want to adjust your arrangement before April 2029.
• Look for opt-out clauses: most salary sacrifice schemes allow you to leave at major life events (marriage, parental leave, redundancy). Keep this in mind if your circumstances change.

For a full overview of statutory rates and how they apply to you, visit the UK Minimum Wage homepage.

Frequently asked questions

Can my employer force me into a salary sacrifice arrangement?

No. Salary sacrifice requires a permanent, voluntary change to your employment contract. You must agree in writing to reduce your gross salary in exchange for a non-cash benefit. Your employer cannot impose it without your consent, and you should check whether the scheme allows you to opt out at major life events such as marriage, parental leave, or redundancy.

How does the £2,000 cap affect my take-home pay if I sacrifice more than that for my pension?

From April 2029, if you sacrifice more than £2,000 of your salary or bonus into your pension via salary sacrifice, the excess amount will be treated as earnings for National Insurance purposes. You will pay Class 1 employee National Insurance on that excess, and your employer will also pay secondary National Insurance. Your pension contribution still gets Income Tax relief, but your take-home pay will be slightly lower than under the current rules. HMRC estimates the average extra NI cost for affected employees is around £84 per year.

If I earn the National Living Wage, can I still use salary sacrifice?

You can only use salary sacrifice if your cash pay after the sacrifice remains at or above the National Living Wage (or the appropriate minimum wage rate for your age). For example, if you earn £12.71 per hour, you cannot sacrifice any amount because that would take you below the legal minimum. If your contractual rate is higher than the minimum, you can sacrifice the difference, but no more. Employers must cap any salary sacrifice to ensure you never fall below the minimum wage.