How does salary sacrifice pension work?

With salary sacrifice, you agree to give up part of your salary in exchange for your employer paying that amount directly into your pension. Because the contribution comes from your gross pay before tax, you pay less Income Tax and National Insurance on it.

How much tax do you save with salary sacrifice?

A basic rate taxpayer saves 28% (20% income tax + 8% NI). A higher rate taxpayer saves 42% (40% income tax + 2% NI). Someone in the 60% tax trap band saves 62% — making pension contributions extraordinarily efficient.

Are there any downsides to salary sacrifice?

Salary sacrifice reduces your official gross salary, which may affect mortgage affordability assessments, life insurance (if based on salary multiples), and some state benefits. It is worth checking these implications before making large salary sacrifice arrangements.

Salary Sacrifice Pension: How Much Tax Could You Save? (2026/27)

Salary sacrifice is one of the most tax-efficient ways to save for retirement in the UK. By giving up part of your salary in exchange for pension contributions, you reduce your Income Tax and National Insurance bill — effectively getting the government to top up your pension. Here's exactly how much you could save in 2026/27.

How Salary Sacrifice Pension Works

With a standard pension contribution, you pay tax on your salary first and then contribute from your net pay. The pension provider claims back basic rate tax on your behalf (20%), but you're still paying National Insurance on the full salary.

With salary sacrifice, your employer reduces your contractual salary by the contribution amount and pays it directly into your pension. Because the contribution never appears in your taxable pay, you save both Income Tax and National Insurance on it.

💡 Your employer saves too

Employer NI is also reduced when you use salary sacrifice, because they pay less NI on your lower contractual salary. Many employers pass this saving back to employees as an additional pension contribution — always worth asking.

How Much Do You Save?

The tax saving depends on which income tax band you're in:

Tax Band	Income Range	Saving per £100 contributed
Basic rate	£12,570 – £50,270	£28 (20% tax + 8% NI)
Higher rate	£50,271 – £100,000	£42 (40% tax + 2% NI)
60% trap zone	£100,000 – £125,140	£62 (60% effective rate + 2% NI)
Additional rate	Above £125,140	£47 (45% tax + 2% NI)

Worked Examples

Example 1: Basic rate taxpayer, salary £40,000

📊 £200/month salary sacrifice

Annual contribution: £2,400
Income tax saved (20%): £480
NI saved (8%): £192
Total annual saving: £672
Net cost to you: £1,728 for £2,400 in your pension

Example 2: Higher rate taxpayer, salary £65,000

📊 £500/month salary sacrifice

Annual contribution: £6,000
Income tax saved (40%): £2,400
NI saved (2%): £120
Total annual saving: £2,520
Net cost to you: £3,480 for £6,000 in your pension

Example 3: Escaping the 60% trap, salary £115,000

📊 £15,000/year salary sacrifice to bring income to £100,000

Annual contribution: £15,000
Effective tax saving (62%): £9,300
Net cost to you: £5,700 for £15,000 in your pension
Plus: Full personal allowance restored (worth £5,028 in tax)

See your take-home pay with pension contributions

Our take-home pay calculator includes a pension contribution field so you can see exactly how salary sacrifice affects your monthly take-home.

💷 Calculate Take-Home Pay

Downsides to Consider

Salary sacrifice is almost always beneficial, but there are a few things to be aware of:

Mortgage affordability — lenders use your contractual salary, which is lower after salary sacrifice. Some lenders will add contributions back; others won't.
Life insurance — if your employer provides a death-in-service benefit as a multiple of salary, a lower salary means a lower payout.
State benefits — some benefits are based on earnings. If your salary drops below certain thresholds, this could affect entitlement.
Statutory pay — maternity, paternity and sick pay are calculated on qualifying earnings, which may be affected.

Frequently Asked Questions

How do I set up salary sacrifice? ▼

You need to agree to a formal variation of your employment contract with your employer. Most employers with workplace pensions offer salary sacrifice — speak to your HR or payroll team to find out if it's available and how to set it up.

Is there a limit on how much I can contribute? ▼

The annual pension allowance for 2026/27 is £60,000 (or 100% of earnings if lower). However, your salary after sacrifice must not fall below the National Living Wage. Most people are well within these limits.

Can self-employed people use salary sacrifice? ▼

No — salary sacrifice is only available to employees. Self-employed people can still benefit from pension tax relief by making personal contributions to a SIPP or personal pension, which attract basic rate relief at source. Higher rate taxpayers can claim additional relief through Self Assessment.

This article is for general information only and does not constitute financial advice. Always consult a qualified financial adviser before making changes to your pension arrangements.