Salary sacrifice can boost your pension significantly while cutting what you pay. Here’s exactly how it works and whether it’s right for you.
For the wider cluster covering workplace pensions, contributions and DB versus DC context, use the main Workplace Pensions hub.
Quick Comparison
| Feature | Salary Sacrifice | Direct Contribution |
|---|
| Income tax saved | Yes | Yes |
| National Insurance saved | Yes (you + employer) | No |
| Net cost of £100 pension | £72 (basic rate) | £80 (basic rate) |
| Employer NI saved | Yes (often passed to you) | No |
| Affects salary figure | Yes (lower on paper) | No |
| Mortgage impact | Potentially negative | None |
| Benefit calculations | Based on lower salary | Based on full salary |
How Each Method Works
Direct Pension Contributions
| Step | What Happens |
|---|
| 1 | You earn £3,000 gross salary |
| 2 | Tax and NI deducted (say £750) |
| 3 | Net pay: £2,250 |
| 4 | You contribute £80 to your pension (relief at source) |
| 5 | HMRC adds £20 tax relief (basic rate) |
| 6 | £100 goes into pension |
| 7 | Net cost to you: £80 (net pay £2,170) |
Salary Sacrifice
| Step | What Happens |
|---|
| 1 | You agree to reduce salary by £100 |
| 2 | New gross salary: £2,900 |
| 3 | Tax and NI calculated on £2,900 (£722 — £28 less, reflecting 20% tax + 8% NI saved on £100) |
| 4 | Net pay: £2,178 |
| 5 | Employer puts £100 into pension |
| 6 | £100 goes into pension |
| 7 | Net cost to you: £72 (£2,250 - £2,178) |
Key difference: Salary sacrifice saves NI contributions that direct contributions don’t.
The Tax Savings Breakdown
Basic Rate Taxpayer (20%)
| Element | Direct Contribution | Salary Sacrifice | Savings |
|---|
| Gross contribution | £100 | £100 | – |
| Income tax saved | £20 | £20 | £0 |
| Employee NI saved (8%) | £0 | £8 | £8 |
| Net cost to you | £80 | £72 | £8 |
| Employer NI saved (15%) | £0 | £15.00 | £15.00 |
Result: £100 in pension costs you £72 instead of £80. Employer also saves £15.
Higher Rate Taxpayer (40%)
| Element | Direct Contribution | Salary Sacrifice | Savings |
|---|
| Gross contribution | £100 | £100 | – |
| Income tax saved | £40 | £40 | £0 |
| Employee NI saved (2%) | £0 | £2 | £2 |
| Net cost to you | £60 | £58 | £2 |
| Employer NI saved (15%) | £0 | £15.00 | £15.00 |
Note: Higher rate taxpayers save less NI (2%, since most of their income sits above the upper earnings limit) but still save their employer NI.
Additional Rate Taxpayer (45%)
| Element | Direct Contribution | Salary Sacrifice |
|---|
| Income tax saved | £45 | £45 |
| Employee NI saved (2%) | £0 | £2 |
| Net cost to you | £55 | £53 |
Real-World Examples
Example 1: £30,000 Salary, £200/month Pension
| Method | Gross | You Pay | In Pension | Net Cost |
|---|
| Direct contribution | £200 | £160 (after tax relief) | £200 | £160 |
| Salary sacrifice | £200 | £144 (lower NI) | £200 | £144 |
With salary sacrifice: Same £200 in pension costs you £144 instead of £160. Save £192/year.
Example 2: £50,000 Salary, £400/month Pension
| Method | Gross | You Pay (after tax) | Annual Saving |
|---|
| Direct contribution | £400 | £320 | – |
| Salary sacrifice | £400 | £288 | £384 |
Example 3: Employer Passes On Their Savings
Some employers add their NI savings to your pension:
| Scenario | You Sacrifice | Employer NI Saved | Total to Pension |
|---|
| Basic (employer keeps NI saving) | £200 | £30.00 | £200.00 |
| With bonus pass-through | £200 | £30.00 added | £230.00 |
Result: If your employer passes on its 15% saving, the same £200 sacrifice produces £230 in your pension (£30 is 15% of £200), at no extra cost to you. Whether your employer does this is its own choice.
Who Benefits Most
Biggest Winners
| Group | Benefit |
|---|
| Basic rate taxpayers | 8% NI savings (highest rate) |
| Near higher rate threshold | Can drop below threshold |
| Near £100k | Avoid 60% tax trap |
| Parents losing Child Benefit | Can reduce AGI below thresholds |
| Student loan repayers | Lower salary = lower repayments |
Near Tax Thresholds
| Threshold | Salary Sacrifice Benefit |
|---|
| £50,270 (higher rate) | Stay in basic rate, avoid 40% |
| £60,000 (Child Benefit) | Keep more Child Benefit |
| £100,000 (personal allowance) | Avoid 60% effective tax rate |
| £125,140 (lose all allowance) | Protect remaining allowance |
Example: Avoiding 60% Tax Trap
| Situation | Without SS | With Salary Sacrifice |
|---|
| Salary | £110,000 | £110,000 |
| Pension sacrifice | £0 | £20,000 |
| Adjusted net income | £110,000 | £90,000 |
| Personal allowance | £7,570 (tapered) | £12,570 (full) |
| Tax rate on £10k | 60% effective | 40% |
Saving: Sacrificing £20,000 to pension saves £10,000 in tax overall — £6,000 of that from escaping the 60% effective-rate zone on the first £10,000, plus standard 40% relief of £4,000 on the remaining £10,000.
Potential Downsides
| Impact Area | Effect |
|---|
| Mortgage applications | Lenders see lower salary |
| Life insurance | Some based on salary |
| Income protection | May pay less |
| Credit applications | Lower stated income |
| Future job negotiations | Lower “current salary” |
Benefits Calculations
| Benefit | Based On |
|---|
| Statutory Maternity Pay | Lower with salary sacrifice |
| Statutory Sick Pay | Lower threshold |
| Redundancy pay | Based on lower salary |
| State Pension | Affects if below Lower Earnings Limit |
Salary Must Stay Above
| Threshold | Amount (2026/27) |
|---|
| National Living Wage | £12.71/hour (21+) |
| Lower Earnings Limit | £6,708/year |
Practical Considerations
Setting Up Salary Sacrifice
| Step | Action |
|---|
| 1 | Check if employer offers it |
| 2 | Review contract changes |
| 3 | Sign new salary agreement |
| 4 | Contribution starts from new pay period |
Can You Change It?
| Aspect | Typical Rules |
|---|
| Increase contribution | Usually anytime |
| Decrease contribution | May be restricted |
| Life events | Can usually change (marriage, baby, etc.) |
| Annual review | Most employers allow changes yearly |
Employer’s Perspective
| Factor | Details |
|---|
| They save NI | 15% on sacrificed amount |
| Some pass savings on | Check if yours does |
| Admin cost | Small, one-time setup |
| Win-win | Both parties benefit |
Comparison Table: Full Breakdown
£100 Monthly Contribution
| Tax Band | Direct Contribution | Salary Sacrifice | You Save |
|---|
| Basic (20%) | Net cost £80 | Net cost £72 | £8/month |
| Higher (40%) | Net cost £60 | Net cost £58 | £2/month |
| Additional (45%) | Net cost £55 | Net cost £53 | £2/month |
£500 Monthly Contribution
| Tax Band | Direct Contribution | Salary Sacrifice | Annual Saving |
|---|
| Basic (20%) | Net cost £400 | Net cost £360 | £480 |
| Higher (40%) | Net cost £300 | Net cost £290 | £120 |
| Additional (45%) | Net cost £275 | Net cost £265 | £120 |
When NOT to Use Salary Sacrifice
| Situation | Reason |
|---|
| Near National Minimum/Living Wage | Can’t go below minimum |
| Applying for mortgage soon | May reduce borrowing power |
| Relying on salary-linked benefits | Could reduce entitlements |
| Near Lower Earnings Limit | Could affect State Pension |
| Employer doesn’t offer it | Not an option |
Making the Decision
Use Salary Sacrifice If:
Stick with Direct Contribution If:
Special Situations
Student Loan Repayers
| Plan | Threshold (2026/27) | Salary Sacrifice Benefit |
|---|
| Plan 1 | £26,900 | Lower salary = lower repayments |
| Plan 2 | £29,385 | Lower salary = lower repayments |
| Plan 4 (Scotland) | £33,795 | Lower salary = lower repayments |
Child Benefit Savers
The High Income Child Benefit Charge tapers between £60,000 and £80,000 of adjusted net income — below £60,000 you keep 100%, and it is fully withdrawn at £80,000 and above:
| Income | Child Benefit Kept | With Salary Sacrifice |
|---|
| £50,000 | 100% | Below threshold — no charge |
| £70,000 | ~50% | Sacrifice can bring you closer to £60,000 |
| £80,000+ | 0% | Sacrifice can restore some benefit if it cuts income below £80,000 |
High Income Child Benefit Charge starts at £60,000. Salary sacrifice can help stay below.
Bonus Sacrifice
| One-Time Events | Can Sacrifice |
|---|
| Annual bonus | Often yes |
| Commission | Check with employer |
| One-off payments | Depends on contract |
Sacrificing a bonus can be very tax-efficient.
Summary
| Factor | Salary Sacrifice | Direct Contribution |
|---|
| NI savings | Yes (up to 8%) | No |
| Best for | Basic rate, near thresholds | Near minimum wage |
| Complexity | Slightly more | Simple |
| Employer benefit | Saves 15% NI | None |
| Effect on recorded salary | Reduces it | No effect |
Key points:
- Salary sacrifice saves NI that direct contributions don’t
- Basic rate taxpayers save most (8% NI rate)
- Can help avoid Child Benefit clawback
- May affect mortgage applications
- Check employer passes on their NI savings
- Not available if it would push you below minimum wage
For more guidance:
Sacrificing a Bonus
Two Methods: Salary Sacrifice vs Personal Contribution
| Method | Tax saved | NI saved | Process |
|---|
| Salary sacrifice (before bonus paid) | Yes, at your marginal rate | Yes, employee NI (2–8%) + employer NI (15%) | Arranged with employer before bonus paid |
| Personal contribution (after bonus paid) | Yes, via tax relief claimed | No: NI already paid on full bonus | Contribute to pension; HMRC adds relief |
Salary sacrifice is more tax-efficient because you avoid National Insurance on the sacrificed amount as well as income tax. Your employer also saves employer NI (15% on 2026/27), and some employers pass this saving on to you, worth asking about.
Worked Example: £10,000 Bonus
Scenario: Sarah earns £55,000/year. Her bonus this year is £10,000. She is a higher-rate taxpayer (40% on income above £50,270).
Option 1: Take the Bonus as Cash
| Amount |
|---|
| Gross bonus | £10,000 |
| Income tax (40%) | −£4,000 |
| Employee NI (2%) | −£200 |
| Net bonus received | £5,800 |
Option 2: Salary Sacrifice (full £10,000 into pension)
| Amount |
|---|
| Pension contribution | £10,000 |
| Income tax saved | £4,000 |
| Employee NI saved | £200 |
| Employer NI saved (15%) | £1,500 |
| Total saving vs taking as cash | £4,200 |
Sarah effectively gets £10,000 into her pension pot, but the actual after-tax cost to her versus the alternative (cash) is just £5,800. That is a 72.4% uplift on her out-of-pocket cost.
Option 3: Personal Contribution (after receiving bonus)
Sarah receives £5,800 net and pays all of it into her SIPP.
- HMRC adds basic rate relief: +£1,450 (gross contribution: £7,250)
- Sarah claims additional 20% (higher rate) via self-assessment or HMRC’s online claim service: +£1,450 (20% of £7,250)
- Net cost of the £7,250 pension contribution: £4,350 (£5,800 less £1,450)
Personal contribution is less efficient than salary sacrifice because she has already paid tax and NI on the bonus: £5,800 buys £7,250 in the pension here, against £10,000 under salary sacrifice. She still gets 40% income tax relief on the contribution in total.
Annual Allowance Check
Before redirecting your bonus to your pension, confirm you will not breach the annual allowance:
- Annual allowance 2026/27: £60,000 (or 100% of your earnings)
- Money Purchase Annual Allowance (MPAA): £10,000, applies only if you have flexibly accessed a pension already
- Carry forward: Unused allowance from the previous three tax years can be added
If your normal annual contributions plus the bonus contribution exceed £60,000, you will face an annual allowance charge on the excess, which effectively cancels out the tax relief. Check your total contributions before proceeding.
How to Arrange a Bonus Salary Sacrifice
- Speak to HR or payroll at least two to three weeks before your bonus payment date
- Confirm the salary sacrifice agreement is updated in writing before the bonus is processed
- The employer routes the sacrificed amount directly to your pension: it never appears on your payslip as gross pay
- If your employer cannot arrange this in time, make a personal contribution instead: you still get full tax relief, just not the NI saving
Some employers require a formal amendment to your employment contract for salary sacrifice. This is a standard process and does not affect your employment rights for statutory purposes such as maternity pay.