Pension tax relief is the single most generous tax break most people will ever use: the government effectively refunds the income tax on everything you save into a pension, at your marginal rate of 20%, 40% or 45%. Yet huge numbers of higher-rate taxpayers never claim the extra relief they are owed. This guide explains how relief works in 2026/27, the difference between relief at source and net pay, how to claim higher-rate relief, the £60,000 annual allowance and the 100%-of-earnings limit, with worked examples for every rate of taxpayer.
Pension tax relief refunds the income tax you paid on money you save into a pension, at your marginal rate. A basic-rate taxpayer gets 20%, a higher-rate taxpayer 40% and an additional-rate taxpayer 45%. The effect is that pension saving costs you less than the amount that lands in your pot.
The classic illustration: a basic-rate taxpayer puts in £80 of take-home pay, and 20% relief tops it up to £100 in the pension. For higher and additional-rate taxpayers the basic 20% is added automatically, but the extra slice usually has to be claimed, which is where a lot of relief goes unclaimed.
Relief at Source vs Net Pay
Workplace pensions use one of two methods, and which one your scheme uses changes what you need to do:
Relief at source: your contribution comes out of pay after tax; the provider reclaims 20% from HMRC and adds it to your pot. Higher-rate taxpayers must claim the rest themselves.
Net pay: your contribution comes out of salary before income tax is worked out, so you get full relief at your marginal rate immediately, with nothing to claim.
The distinction matters most for higher-rate taxpayers (who must actively claim under relief at source) and for very low earners (who can lose out under net pay if they earn below the personal allowance).
Claiming Higher-Rate Relief
If you pay higher or additional-rate tax under a relief-at-source scheme, only the basic 20% is added automatically. You claim the extra 20% (or 25% for additional-rate taxpayers) by entering your gross pension contributions on your Self Assessment return, or by contacting HMRC if you do not file one. HMRC gives the extra relief as a refund or a tax code adjustment. Many higher-rate taxpayers simply never do this and lose hundreds or thousands of pounds a year, so it is worth checking back claims for the previous four tax years too.
The £60,000 Annual Allowance
The annual allowance caps the total contributions, yours, your employer and the relief combined, that get tax relief each year. For 2026/27 it is £60,000. It can fall to as little as £10,000 for very high earners under the tapered annual allowance, and to £10,000 under the Money Purchase Annual Allowance once you flexibly access a pension. Contributions above your available allowance trigger an annual allowance charge that claws the relief back. Read more in our pension annual allowance guide.
The 100%-of-Earnings Limit
Separate from the annual allowance, your personal contributions that qualify for relief are capped at 100% of your relevant UK earnings, or £3,600 gross if you earn less (including if you have no earnings). So someone earning £30,000 can personally contribute up to £30,000 with relief, even though the annual allowance is higher. The £60,000 figure usually only matters once an employer is contributing too, because employer contributions are not capped by your earnings.
Salary Sacrifice
Under salary sacrifice you give up salary in exchange for a larger employer pension contribution. Because the sacrificed pay never reaches you, you save income tax and National Insurance on it, making it more efficient than paying in personally. It counts as an employer contribution for the annual allowance and does not need a higher-rate relief claim. The trade-off is that lower headline salary can affect mortgage applications and some earnings-linked benefits, so weigh it up before signing.
Restoring Allowances
A personal pension contribution reduces your adjusted net income, which can pull you back below key thresholds: under £100,000 to restore the personal allowance you lose in the £100,000 to £125,140 taper, under £60,000 to cut the High Income Child Benefit Charge, or under £50,270 to stay a basic-rate taxpayer. In those bands the effective relief can reach 60% or more, which makes pension contributions one of the most powerful tools for anyone sitting just above a cliff edge.
Worked Examples
Taxpayer
Net cost of £10,000 in the pot
Total relief
Basic rate (20%)
£8,000
£2,000
Higher rate (40%)
£6,000
£4,000
Additional rate (45%)
£5,500
£4,500
For the higher-rate example, £8,000 is paid in net, £2,000 is added at source to make £10,000, and a further £2,000 is reclaimed through Self Assessment, so the real cost is £6,000.
Personal allowance example. Someone earning £110,000 is in the 60% effective band where the personal allowance tapers. A £10,000 gross pension contribution can give 40% direct relief plus the restored personal allowance, an effective relief around 60%, a net cost of roughly £4,000. Model it with the pension calculator and the income tax calculator.
Common Mistakes
Higher-rate taxpayers never claiming the extra 20% relief under relief at source.
Confusing the £60,000 annual allowance with the 100%-of-earnings personal limit.
Low earners losing relief under net pay schemes when they earn below the personal allowance.
Ignoring how a contribution can restore the personal allowance or cut the child benefit charge.
Exceeding the annual allowance and triggering a charge that wipes out the relief.
How does tax relief on pension contributions work?
Pension tax relief means the government refunds the income tax you paid on money you put into a pension, at your marginal rate. So a basic-rate taxpayer gets 20% relief, a higher-rate taxpayer 40% and an additional-rate taxpayer 45%. In practice, for a basic-rate taxpayer, putting £80 of take-home pay into a pension is topped up to £100 by 20% relief. Higher and additional-rate taxpayers get the basic 20% automatically but usually have to claim the extra relief themselves through Self Assessment.
What is the difference between relief at source and net pay?
These are the two ways workplace pensions handle tax relief. Under relief at source, your contribution is taken from your pay after tax, and the pension provider claims 20% back from HMRC and adds it to your pot; higher-rate taxpayers then claim the rest. Under net pay, your contribution is taken from your salary before income tax is calculated, so you get full relief at your marginal rate immediately with nothing to claim. Which one applies depends on how your employer set up the scheme, and it matters most for higher-rate taxpayers and for low earners.
How do I claim higher-rate tax relief on my pension?
If you pay higher or additional-rate tax and your pension uses relief at source, only the basic 20% is added automatically. You claim the extra 20% (or 25% for additional-rate taxpayers) by entering your gross pension contributions on your Self Assessment return, or by contacting HMRC if you do not file a return. HMRC then gives the extra relief either as a tax refund or by adjusting your tax code. A lot of higher-rate taxpayers never claim this and quietly lose money every year.
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What is the annual allowance for pension contributions?
The annual allowance is £60,000 in 2026/27. It is the maximum total of contributions, from you, your employer and the tax relief combined, that can be paid into your pensions each year with tax relief. It can be reduced to as little as £10,000 for very high earners through the tapered annual allowance, and to £10,000 under the Money Purchase Annual Allowance once you flexibly access a pension. Contributions above your available allowance trigger an annual allowance charge that effectively removes the relief.
Is there a limit on how much I can personally contribute?
Yes. Separately from the £60,000 annual allowance, your personal contributions that qualify for relief are capped at 100% of your relevant UK earnings, or £3,600 gross if you earn less than that (including if you have no earnings at all). So someone earning £30,000 can personally contribute up to £30,000 with relief, even though the annual allowance is higher. The £60,000 figure usually only bites when an employer is also contributing, because employer contributions are not limited by your earnings.
Do I get tax relief on employer pension contributions?
Employer contributions are paid gross and are not taxed as your income, so in effect they already carry full relief; you do not separately claim relief on them. They do, however, count towards your £60,000 annual allowance alongside your own contributions. Salary sacrifice arrangements, where you give up salary in exchange for a larger employer pension contribution, are a tax-efficient route because they also save National Insurance, but they count as employer contributions for the annual allowance.
Can I get pension tax relief if I do not pay tax?
Yes, up to a point. Even a non-taxpayer or a child can have £3,600 gross paid into a personal pension each year and receive 20% relief at source, meaning a net payment of £2,880 is topped up to £3,600. This is because relief at source gives the basic 20% regardless of whether you actually paid that much tax. It is a quirk worth using for non-earning spouses and children, as the government effectively contributes £720 a year to a pension that costs you £2,880.
What is the Lump Sum Allowance?
When the lifetime allowance was abolished, it was replaced by the Lump Sum Allowance, which caps the total tax-free cash you can take from your pensions, normally £268,275. This is the maximum 25% tax-free lump sum across all your pensions combined (some people with protections have a higher figure). It does not limit the size of your pension pot or the relief you get on contributions; it only limits the tax-free cash on the way out. Income drawn beyond the tax-free element is taxed as normal income.
Does pension tax relief reduce my adjusted net income?
Yes, and this is one of the most valuable features. A personal pension contribution reduces your adjusted net income, which can pull you back below key thresholds: under £100,000 to restore your personal allowance, under £60,000 to reduce the High Income Child Benefit Charge, or under £50,270 to stay a basic-rate taxpayer. In those bands the effective relief can be far higher than the headline 40%, sometimes 60% or more, which makes pension contributions a powerful planning tool for people near those cliff edges.
How is relief given to self-employed people?
A self-employed person paying into a personal pension or SIPP gets relief at source: they pay in net, the provider reclaims 20%, and higher or additional-rate relief is claimed through their Self Assessment return. Because the self-employed already file a return, claiming the extra relief is straightforward, but it is still missed by some. The 100%-of-earnings limit uses their profits for the year, so a self-employed person can contribute up to their relevant earnings, subject to the annual allowance.
How do I work out how much relief I will get?
Take your gross contribution and multiply by your marginal rate to see the relief. A £10,000 gross contribution gives £2,000 relief at 20%, £4,000 at 40% or £4,500 at 45%, though the higher-rate portion only applies to the part of your income that would otherwise be taxed at that rate. If the contribution also restores your personal allowance or cuts a child benefit charge, the effective relief is higher still. A pension or income tax calculator lets you model the exact figure for your income.
Disclaimer: This guide reflects 2026/27 UK pension tax relief rules. Rates, allowances and the taper change at fiscal events, and the right approach depends on your full circumstances. Consult a qualified financial adviser before making large contributions, and refer to gov.uk for current rules.