How Pension Tax Relief Works
Pension contributions are one of the most tax-efficient ways to save money in the UK. When you contribute to a pension, you receive tax relief — meaning the government tops up your contribution by refunding income tax you've already paid.
For a basic rate taxpayer (20%), for every £80 you put into your pension, the government adds £20 in tax relief, making your total contribution £100. For a higher rate taxpayer (40%), every £100 in your pension only costs you £60 after claiming tax relief through Self Assessment.
💡 Pension reduces your taxable income: Workplace pension contributions (especially through salary sacrifice) reduce your gross taxable salary, meaning you pay less income tax AND less National Insurance. Use our salary calculator to see the difference pension contributions make to your take-home pay.
Auto-Enrolment Pension Rules 2026/26
Under automatic enrolment, employers must automatically enrol eligible workers into a workplace pension scheme. The minimum contribution rates are:
| Contributor | Minimum Contribution | Based On |
|---|---|---|
| Employee | 5% | Qualifying earnings |
| Employer | 3% | Qualifying earnings |
| Total | 8% | Qualifying earnings |
Qualifying earnings for 2026/26 are between £6,240 and £50,270 per year. This means both employee and employer contributions are calculated on this band rather than your full salary.
Pension Annual Allowance 2026/26
The Annual Allowance is the maximum amount you can contribute to pensions in a tax year and still receive tax relief. For 2026/26, this is £60,000 (or 100% of your earnings if lower). This includes both your contributions and your employer's contributions.
If you earn over £260,000, your annual allowance may be tapered down to a minimum of £10,000.
Pension Contributions and the £100,000 Trap
If you earn between £100,000 and £125,140, you face an effective marginal tax rate of 60% because your personal allowance is withdrawn at £1 for every £2 earned above £100,000. Making pension contributions can be incredibly powerful in this range:
- A pension contribution of £10,000 on a £110,000 salary reduces your taxable income to £100,000
- This restores £5,000 of personal allowance
- The effective tax saving is approximately 60% — worth £6,000 on a £10,000 contribution
Salary Sacrifice Pension
A salary sacrifice pension is when you agree to give up part of your salary in exchange for increased employer pension contributions. The key benefit is that:
- You save income tax (20%, 40% or 45% depending on your band)
- You also save National Insurance (8% for most employees)
- Your employer saves their 15% NI contribution too (some employers pass this saving on)
This makes salary sacrifice especially powerful for higher earners. See our complete salary sacrifice guide for detailed examples.
How Much Should I Contribute to My Pension?
A common rule of thumb is to contribute half your age as a percentage. So if you're 30, aim to put 15% of your salary into your pension total (including employer contributions). The minimum auto-enrolment of 8% is often not enough for a comfortable retirement.
State Pension in 2026/26
In addition to workplace and personal pensions, the new full State Pension is worth £221.20 per week (£11,502.40/year) in 2026/26. You need 35 qualifying years of National Insurance contributions to receive the full amount. See our National Insurance guide for more details on qualifying years.
See How Pension Affects Your Take-Home Pay
Adjust your pension percentage in our free salary calculator to see the impact.
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