Pension Tax Relief at a Glance: 2025/26
Pension Tax Relief Calculator
How Pension Tax Relief Works
Pension tax relief is the government's mechanism for returning the income tax you paid on your pension contributions. The logic is simple: you contribute from income that has already been taxed, so HMRC gives back the tax you paid. The effect is that money going into your pension is never taxed on the way in — only when you draw it down in retirement (with the first 25% tax-free up to the lump sum allowance).
The Two Methods of Delivering Relief
1. Relief at Source
Used by SIPPs and most personal pensions. You pay contributions from your net (post-tax) income. The pension provider claims 20% basic rate tax relief directly from HMRC and adds it to your pension pot. For every £80 you pay, your pension receives £100. Higher and additional rate taxpayers must claim additional relief above 20% via Self-Assessment.
2. Net Pay Arrangement
Used by most workplace pension schemes including NEST and many employer schemes. Your employer deducts pension contributions from your gross salary before calculating PAYE tax. You automatically get relief at your full marginal rate without any additional action. You don't need to claim anything extra — the relief is built into your payslip. However, non-taxpayers get no relief in net pay schemes (a known unfairness).
3. Salary Sacrifice
The most efficient method for employed workers. You formally agree to a lower salary, and the difference is paid as an employer pension contribution. This saves income tax AND National Insurance (employee 12%/2% and employer 13.8%) on the contributed amount. Many employers pass on their NI saving as additional pension contributions.
UK Income Tax Bands and Pension Relief Rates 2025/26
| Income Band | Tax Rate (England/Wales/NI) | Pension Relief Rate | Extra to Claim via SA |
|---|---|---|---|
| Up to £12,570 (Personal Allowance) | 0% | 20% (RAS only) | 0% |
| £12,571–£50,270 | 20% | 20% | 0% |
| £50,271–£125,140 | 40% | 40% (via scheme + SA) | 20% |
| £100,001–£125,140 (PA taper) | Effective 60% | 60% effective | 40% (20% + PA relief) |
| Over £125,140 | 45% | 45% | 25% |
How to Claim Higher Rate Pension Tax Relief
- Register for Self-Assessment at gov.uk/self-assessment-tax-returns if you haven't already
- Note your pension contributions — get an annual statement from your pension provider showing total contributions made using relief at source
- Enter contributions on your SA return — SA100, section on pension savings
- HMRC calculates additional relief owed and either pays it as a refund or adjusts your tax code
- Alternatively, if you're a PAYE taxpayer who doesn't want to complete a full return, write to HMRC with details of your pension contributions
Worked Examples
Example 1: Basic Rate Taxpayer
Annual salary: £38,000. Pension contribution: £3,000/year via SIPP (relief at source).
- You deposit: £2,400 (your net contribution)
- Provider claims 20% from HMRC: £600
- Pension receives: £3,000
- Nothing else to claim — your marginal rate is 20%
Example 2: Higher Rate Taxpayer
Annual salary: £75,000. Pension contribution: £10,000/year via SIPP (relief at source).
- You deposit: £8,000
- Provider claims 20%: £2,000 — pension now has £10,000
- Via Self-Assessment, you claim additional 20% relief: £2,000 tax refund or tax code adjustment
- Effective net cost: £8,000 − £2,000 = £6,000 for £10,000 in pension
- Return on cost purely from tax relief: 67%
Example 3: Additional Rate Taxpayer
Annual income: £200,000. Pension contribution: £20,000/year gross.
- Net cost via relief at source: £16,000 deposited
- Provider claims 20% = £4,000 added
- You claim additional 25% via Self-Assessment = £5,000 refund
- Net cost: £16,000 − £5,000 = £11,000 for £20,000 in pension
- Effective cost per £1 in pension: 55p
Example 4: The £100k Trap — Pension as a Solution
Income: £115,000. Personal allowance is tapered to zero. Effective marginal rate on income from £100,000 to £125,140 is 60%.
- Make £15,000 gross pension contribution
- Adjusted net income drops to £100,000 — full personal allowance (£12,570) restored
- Tax saving: 60% x £15,000 = £9,000 in addition to the pension being funded
- Net cost of £15,000 pension contribution: £6,000 after effective 60% relief
Pension vs ISA: Which Is Better for Your Money?
This is one of the most common financial planning questions. The answer depends on your tax rate:
- Higher rate taxpayers: Pension almost always wins. Upfront 40% relief plus employer contributions significantly boost initial returns before any investment growth.
- Basic rate taxpayers: Closer decision. Pension offers 20% upfront relief and employer contributions; ISA offers full flexibility and no tax on withdrawal. If you'll be a basic rate taxpayer in retirement, the pension's tax saving at contribution equals the tax you'll pay at withdrawal — so employer contributions and investment growth are the key differentiators.
- Non-taxpayers: ISA may be better for flexibility. Pensions via relief at source still offer 20% bonus up to £3,600 gross, which is valuable for non-earners.
Pension Tax Relief: Frequently Asked Questions
How do I claim higher rate pension tax relief?
Register for Self-Assessment at gov.uk if you haven't already. On your annual tax return (SA100), declare the total gross pension contributions you made via relief-at-source schemes. HMRC calculates the additional relief owed (the difference between your marginal rate and 20% basic rate) and either issues a refund or adjusts your PAYE code so you receive the relief via reduced future tax deductions. If you haven't claimed for previous years, HMRC accepts backdated claims for up to 4 tax years.
What is the annual allowance and what happens if I exceed it?
The annual allowance is £60,000 (or 100% of earnings if lower) for 2025/26. It covers all pension inputs including your contributions, employer contributions and any growth in DB pension value. If you exceed the annual allowance without sufficient carry forward, you pay an Annual Allowance Charge via Self-Assessment equal to the excess at your marginal tax rate. This effectively claws back the tax relief on the excess. Always check your total contributions before making large one-off payments.
Can I carry forward unused pension allowance?
Yes. Unused annual allowance from the previous 3 tax years can be carried forward and used in the current year. You must have been a member of a registered UK pension scheme in each of those years. Use the current year's allowance first, then carry forward from the oldest year. The total contribution cannot exceed 100% of current year earnings. This is particularly useful if you receive a large bonus or inheritance and want to make a substantial one-off pension contribution.
Is salary sacrifice always better than a standard pension contribution?
For most employed workers, yes. Salary sacrifice saves both income tax AND National Insurance on contributed amounts. A basic rate taxpayer using salary sacrifice saves 20% income tax + 12% National Insurance = 32% saving, compared to only 20% via a personal pension contribution. Your employer may also pass on their 13.8% employer NI saving. The main trade-off is your gross salary falls, which can affect mortgage affordability calculations, life insurance cover based on salary, and some state benefit calculations.
What is the tapered annual allowance for high earners?
If your 'adjusted income' (total income including employer pension contributions) exceeds £260,000, your annual allowance is reduced by £1 for every £2 above £260,000, down to a minimum allowance of £10,000. The 'threshold income' (personal income, excluding employer contributions) must also exceed £200,000 for tapering to apply. At £360,000 adjusted income, the allowance reaches its minimum of £10,000. This primarily affects very high earners, including some NHS consultants, senior lawyers and finance professionals. Professional pension advice is essential at these income levels.
Does pension relief help if I'm near the £100,000 income boundary?
Yes, dramatically. Between £100,000 and £125,140, your personal allowance is withdrawn at 50p per £1, creating an effective 60% marginal tax rate. Making pension contributions reduces your adjusted net income below £100,000, restoring the full personal allowance. A £25,000 pension contribution for someone earning £125,140 could save up to £15,000 in tax (60% of the excess above £100,000), making the effective cost of the pension contribution just £10,000 — 40p per £1 in pension. This is one of the most powerful tax-efficient strategies in the UK tax system.
What pension tax relief is available for Scottish taxpayers?
Scottish taxpayers pay income tax at different rates to the rest of the UK. If your scheme uses net pay arrangement, pension contributions automatically attract relief at your Scottish marginal rate. If using relief at source, the provider claims 20% basic rate for all UK taxpayers. Scottish intermediate rate (21%), higher rate (42%), advanced rate (45%) and top rate (48%) taxpayers must claim additional relief above 20% via a Scottish Self-Assessment return. Scotland's rates change more frequently than UK rates, so check the current bands each tax year.