How Pension Tax Relief Works
Written and reviewed by the Pension Tax Accountants editorial team. Last reviewed 29 July 2026.
Pension tax relief means contributions are made from income before tax, or that tax already paid is refunded. It is the reason a pension contribution costs a basic rate taxpayer less than the amount that lands in the pension.
How much relief you get, and whether you have to claim any of it yourself, depends on your earnings, your tax rate and the way your scheme collects relief. This guide sets out those tax rules, not whether a contribution suits you, which is a regulated financial advice question.
The Limit on Tax Relief
Tax relief is available on contributions up to 100% of your relevant UK earnings for the year, or £3,600 gross if that is higher. Someone with no relevant earnings can therefore still get relief on up to £3,600 gross. The gov.uk pension tax relief guidance confirms these limits.
This earnings limit is separate from the annual allowance. A contribution has to clear both to be fully tax efficient, the earnings limit for relief and the allowance for avoiding a charge, and carry forward can raise the allowance headroom.
Relief at Source and Net Pay
Schemes collect relief in one of two ways. Under relief at source, you pay from taxed income and the provider adds basic rate relief of 20%, so an £80 payment becomes £100 in the pension. Under net pay, the contribution comes out of your salary before tax, so full relief is given immediately at your highest rate.
Which method your scheme uses affects whether higher rate relief is automatic or has to be claimed. The framework for both sits in the Finance Act 2004.
Reclaiming Higher and Additional Rate Relief
Under relief at source, only basic rate relief is added at source. A higher rate taxpayer can reclaim a further 20%, and an additional rate taxpayer a further 25%, through Self Assessment. In England the higher rate is 40% and the additional rate is 45% on income over £125,140.
Under net pay there is nothing extra to claim, because full relief has already been given. Knowing which arrangement you are in tells you whether you are leaving relief unclaimed.
The Scottish Position
Income tax on earnings is different in Scotland, with its own bands and rates set by the Scottish Parliament. That changes the amount of higher rate relief a Scottish taxpayer reclaims, so the England figures above do not carry across.
If you pay Scottish income tax, the relief you can reclaim is worked out against the Scottish bands rather than the ones used here.