How to Claim Higher Rate Pension Tax Relief: A Step-by-Step Guide

If you pay income tax at 40% or 45% and contribute to a personal pension or SIPP, HMRC owes you money — and it won’t pay it unless you ask. Under relief at source, your pension provider automatically claims 20% basic rate relief on your behalf, but the remaining 20% (for higher-rate taxpayers) or 25% (additional rate) must be claimed separately via Self Assessment. Millions of higher-rate contributors have unclaimed relief sitting with HMRC, sometimes for several years.

How pension tax relief works under relief at source

Most personal pensions, SIPPs, and stakeholder pensions use a system called relief at source. When you make a contribution, you pay from your net (after-tax) pay. Your pension provider then claims 20% basic rate tax relief from HMRC and adds it to your pot.

Example: you contribute £800 from your bank account. Your provider claims £200 from HMRC. Your pension pot receives £1,000. That part is automatic — all pension members benefit from it, even non-taxpayers.

The problem: HMRC only tops up at 20%. If you pay 40% income tax, the correct relief on a £1,000 gross contribution is £400 — but only £200 arrives automatically. The remaining £200 is yours to claim. If you pay 45%, you are owed £250 per £1,000 contributed. Use the pension tax relief calculator to work out the exact figure for your contribution level and tax band.

How to claim higher rate pension tax relief via Self Assessment

The most straightforward route is Self Assessment. If you already file a tax return, the process is simple: enter your pension contributions in the “Pension contributions” section of your return. HMRC calculates the additional relief and either reduces your tax bill or issues a refund.

If you do not normally file a Self Assessment return, you have two options:

• Register for Self Assessment and file a return for the relevant tax year. The online filing deadline is 31 January following the end of the tax year (31 October for paper returns).
• Write to HMRC with details of your pension contributions and ask them to adjust your tax code or issue a repayment. HMRC can update your PAYE tax code to give the relief in your monthly pay going forward, or process a one-off refund for the current year.

In both cases, you will need the name of your pension provider, the gross contribution amount for the year, and your National Insurance number. Your pension provider’s annual statement shows the gross contribution figure (including the 20% basic relief already added).

Claiming relief for previous tax years

You can claim higher rate relief going back four tax years. For 2026-27, the window covers 2022-23, 2023-24, 2024-25, and 2025-26. Claims for years where you already filed a Self Assessment return can be made by amending those returns online through your HMRC personal tax account.

If you did not file a return for those years, you can claim overpayment relief under Schedule 1AB of the Finance Act 2008 by writing to HMRC. Your letter should include: the tax year(s) in question, the gross pension contributions made in each year, confirmation of the provider and scheme name, and a calculation of the relief you believe you are owed. HMRC processes these claims and issues a cheque or bank transfer for the amount overpaid — there is no need to file a full tax return for years you were not otherwise required to.

Workplace pensions: net pay vs relief at source

Not all workplace pensions use relief at source. Many use a net pay arrangement instead, where contributions are taken from your gross salary before income tax is calculated. Under net pay, you receive relief at your full marginal rate automatically — no Self Assessment claim is needed. Check your payslip: if your pension contribution reduces your “taxable pay” figure, you are in a net pay arrangement and are already receiving the correct relief.

Salary sacrifice pensions also give full relief at source, since the contribution is taken before tax and National Insurance are applied. If your employer offers salary sacrifice, it is typically the most tax-efficient option — a higher-rate taxpayer saves 40% income tax and 2% NI on contributions above £50,270, compared to 40% income tax only under a personal contribution.

Scottish taxpayers and higher-rate relief

Scottish taxpayers pay income tax at rates set by the Scottish Parliament: 19% (starter), 20% (basic), 21% (intermediate), 42% (higher), 45% (advanced), and 48% (top). Under relief at source, all Scottish taxpayers receive 20% relief automatically — the same as the rest of the UK. The difference is in what must be claimed via Self Assessment:

• Starter rate (19%): no claim needed; actually receive a small 1% bonus.
• Basic rate (20%): no claim needed.
• Intermediate rate (21%): claim 1% extra — £10 per £1,000 contributed.
• Higher rate (42%): claim 22% extra — £220 per £1,000 contributed.
• Advanced rate (45%): claim 25% extra — £250 per £1,000 contributed.
• Top rate (48%): claim 28% extra — £280 per £1,000 contributed.

Scottish intermediate rate taxpayers in particular often miss the 1% claim because it is small and not widely publicised — but on a £20,000 annual contribution it adds up to £200 per year.

The annual allowance limit

Tax relief is only available on contributions up to the annual allowance: £60,000 per year (or 100% of your earnings if lower). Contributions above this limit still go into your pension but attract an annual allowance charge that cancels out the tax relief. Higher earners with adjusted income above £260,000 are subject to the tapered annual allowance, which reduces the limit down to a minimum of £10,000.

Unused annual allowance from the previous three years can be carried forward, allowing a larger contribution (and larger relief claim) in the current year. This is useful if you received a bonus, sold a business, or had a year of unexpectedly high earnings. See the pension projection calculator to model the long-term impact of larger contributions.

This article is for informational purposes only. Speak to a qualified financial adviser for personalised recommendations.