There is no single maximum for pension salary sacrifice: pay after the sacrifice cannot fall below minimum wage, and tax and scheme limits also apply.

How much salary sacrifice into a pension is possible depends on four things: the pay floor, the tax limits on pension saving, your employer's own rules, and what a smaller cash salary does to anything calculated from your pay. This guide takes each in turn. Measuring those limits against your own pay and pensions is work an FCA-authorised adviser can do with you; a short free call follows once your details go into the form on this page.

Is there one maximum for salary sacrifice into a pension?

No single figure applies to everyone. HMRC's table of pension scheme rates puts no ceiling on what an individual may contribute to a registered pension scheme, so the real limits come from elsewhere:

  • The pay floor. What you are paid in cash has to stay at or above the National Minimum Wage or National Living Wage.
  • The tax limits. The annual allowance, and a tapered one at high incomes, decide how much can go in before a tax charge.
  • Your employer's terms. The employer sets up the arrangement, caps the amount sacrificed and decides how pay-linked contributions are measured.
  • Pay-linked entitlements. A lower cash salary can change statutory pay and some benefits.

From April 2029 there is also a National Insurance cap on the relief, covered below. For what salary sacrifice is, see what pension salary sacrifice is; whether it is worth doing is the question that guide takes up.

How much can you sacrifice before you hit the National Minimum Wage?

HMRC's guidance for employers is direct: "A salary sacrifice arrangement must not reduce an employee’s cash earnings below the National Minimum Wage ( NMW ) rates ." Employers "must put procedures in place to cap salary sacrifice deduction and ensure NMW rates are maintained".

GOV.UK's rates page gives the hourly figures from April 2026, which change every 1 April:

WorkerHourly rate from April 2026
Aged 21 and over (National Living Wage)£12.71
Aged 18 to 20£10.85
Under 18£8
Apprentice rate (GOV.UK sets out who counts)£8

Our working, 20 October 2026, with assumptions stated. Take someone aged 21 or over on £500 a week who works 37.5 hours. At £12.71 an hour, 37.5 hours comes to £476.63 a week (rounded). Headroom is therefore about £23.37 a week, or roughly 4.7% of pay, before cash pay would fall to the floor. This ignores how the minimum wage is measured for different pay periods and kinds of pay, and anyone near the floor should ask the employer how it checks. Someone on a higher salary has more room; someone close to the floor may have none.

The minimum wage is not the only line a large sacrifice can cross. The same guidance says that if a sacrifice takes average weekly earnings below the lower earnings limit (£129 a week for 2026 to 2027, in the rates and thresholds for employers), the employer does not have to make statutory payments. Statutory maternity pay is treated differently: average weekly earnings are worked out on what was actually paid, and "SMP cannot be sacrificed, it must be paid in full". What a lower cash salary does to benefits and pay-linked items is weighed in whether pension salary sacrifice is worth it, and maternity leave has its own guide.

The floor limits how much pay you can give up; the minimum a workplace scheme must receive is a separate matter, covered on the workplace pension minimum page.

Which tax limits cap a salary sacrifice contribution?

Money you sacrifice is paid into the pension by your employer, so it counts as an employer contribution. HMRC's example of a £5,000 bonus sacrificed shows the whole amount going in as an "employer contribution to registered pension scheme". It therefore uses up the same annual allowance as everything else you save. On GOV.UK the allowance is the ceiling on pension saving in one tax year, running 6 April to 5 April, above which a tax charge applies; it is £60,000 for 2026/27, and for a defined contribution scheme it takes in your own payments and your employer's alike.

Two points matter for how much you sacrifice:

  • The allowance is shared. It covers all your private pensions together, so what your employer already pays and anything you add elsewhere count. The annual allowance guide explains what counts, and how salary sacrifice sits within it.
  • It can be lower. A reduced, "tapered" allowance applies in 2026/27 if both threshold income is over £200,000 and adjusted income is over £260,000, and HMRC's rates table gives £10,000 as the lowest the tapered figure goes. Having flexibly accessed a pension can also lower it; see the tapered allowance guide and the money purchase annual allowance guide.

If this year's total would go over, GOV.UK adds that you "might be able to carry over any annual allowance you did not use from the previous 3 tax years", which the carry forward guide sets out. Adding up every scheme's contributions against the allowance is a sum an FCA-authorised adviser can check with you, free of charge, once you have used the form on this page. Investments held in a pension can fall as well as rise in value, and you may get back less than was paid in.

Does the £2,000 cap from April 2029 limit how much you can sacrifice?

No: it limits the National Insurance saving, not the amount. HM Treasury's November 2025 page says "From April 2029, the amount that is exempt from National Insurance contributions (NICs) will be capped at £2,000 a year for employee contributions made via salary sacrifice", and that contributions above £2,000 can still be made this way but will carry employer and employee NICs. Income Tax treatment is unchanged, "subject to the usual limits". The National Insurance Contributions (Employer Pensions Contributions) Act 2026, which received Royal Assent on 29 April 2026, applies from the 2029-30 tax year and requires the first regulations under it to set the limit at £2,000. Those regulations, which will hold the detail, had not been published on legislation.gov.uk when we checked on 20 October 2026.

Our working, 20 October 2026: £2,000 a year is about £167 a month if spread evenly. The salary sacrifice changes guide follows the reform as the detail emerges.

What does your employer decide, and how do you change the amount?

An employer, not the law, decides whether to offer salary sacrifice at all. HMRC's guidance for employers says an employer "can set up a salary sacrifice arrangement by changing the terms of your employee’s employment contract" and that the employee "needs to agree to this change". Whether yours does it, and how to tell, is covered in how to tell whether your pension is salary sacrifice and who can use it.

Three employer choices shape how much you can put in:

  • A cap. Employers must have procedures to cap deductions at the pay floor, and an employer may set its own maximum as a percentage or an amount. The figure is theirs, so ask for it in writing.
  • The pay used for other calculations. Employers usually decide whether pension contributions, overtime rates and pay rises are worked out on your old salary or the new, lower cash one, and must make that clear to you. Often they use a notional level of pay for pension contributions, though the guidance says employers "should always check with their scheme provider".
  • Extra from the employer. The guidance gives the example of an employer paying above the minimum to cover part or all of the employee's contribution, with the employee taking a lower cash salary.

To start or change the amount, go to your payroll, HR or pensions team. Each opt-in or opt-out means altering the contract, so an increase or reduction is a formal variation, not a tick-box, and as a general rule if an employee can swap between cash and a non-cash benefit whenever they like, the expected tax and National Insurance advantages will not apply. Marriage, divorce and a partner becoming redundant or pregnant are among the lifestyle changes the guidance lists as possible reasons to alter the terms. A change cannot be backdated either: HMRC would need to see that it was "effective at the right time and not applied retrospectively". Ask your employer how often it allows a change and how much notice it needs.

Salary sacrifice amounts: questions people ask

What is the maximum pension salary sacrifice in the UK?

No law sets one figure. The practical ceiling is the lowest of the pay floor, your employer's cap and the annual allowance, which is £60,000 for 2026/27 and lower for some people. From April 2029 the National Insurance relief is capped at £2,000 a year, not the amount you can sacrifice.

Can I sacrifice a percentage of my salary?

If your employer allows it. Whether the sacrifice is set as a percentage or a fixed amount is for the employer to decide, and HMRC says employers must have procedures to cap deductions, so ask what yours is.

How do I work out how much I can sacrifice?

Check three limits in order: your pay after the sacrifice against the hourly minimum for your age, the employer's stated cap, and your total pension saving against the annual allowance. The working on this page shows the first check; your payroll team can run it on real pay.

How often can I change my salary sacrifice pension contributions?

It depends on the employer's terms. HMRC treats each change as a contract variation, and swapping at will can lose the tax and NI advantages, so an employer may limit changes, for example to a set time of year or to a change in circumstances.

Will my employer still pay pension contributions on my full salary?

That is the employer's decision. HMRC's guidance says the employer decides whether salary sacrifice affects scheme contributions, and that employers often use a notional level of pay. Ask which pay figure yours uses.

Your next step

Pay, other pensions and employer terms all feed into the right figure. Weighing that mix by phone, without charge, is what an FCA-authorised adviser offers once your details reach us through the form on this page.

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