Higher-rate pension tax relief: how it works and how to claim it

Pension tax relief is given at your marginal rate of income tax — 20%, 40% or 45%. Whether the higher-rate part arrives automatically depends entirely on how the contribution is paid. Under a net-pay arrangement the full relief comes through payroll with nothing to do. Under relief at source, only the basic 20% is added automatically, and a higher- or additional-rate taxpayer must claim the extra 20 or 25 percentage points from HMRC. Under salary sacrifice there is no relief to claim at all, because the sacrificed pay is never taxed in the first place.

The three routes to marginal-rate relief

Net pay (FA 2004 s.193): the contribution is deducted from your gross pay before PAYE is applied, so tax is only ever charged on the remainder. Relief at your full marginal rate is built in — a 40% taxpayer’s £100 contribution reduces the tax bill by £40 automatically, with no claim to make. Most occupational schemes work this way.

Relief at source (FA 2004 s.192): you pay 80% of the gross amount from taxed income and the provider reclaims the other 20% from HMRC. That settles the basic-rate relief only. The higher- and additional-rate relief is delivered by extending your basic-rate and higher-rate limits by the gross contribution (FA 2004 s.192(4) — the same band-extension mechanism ITA 2007 s.414 uses for Gift Aid), which moves income that would have been taxed at 40% or 45% down into a lower band. That extension only happens if HMRC knows about the contribution — which is why it has to be claimed. Most personal pensions and SIPPs, and some workplace schemes, use relief at source; the two payroll methods are compared in net pay vs relief at source.

Salary sacrifice: the pay is given up before it is ever earned for tax purposes and reaches the pension as an employer contribution. There is no 20% top-up to receive and no higher-rate claim to make — the full marginal-rate saving, plus the National Insurance saving, happens in the payslip. The salary sacrifice calculator shows the arithmetic.

FA 2004 s.192 and s.192(4) (relief at source, band extension) ; FA 2004 s.193 (net pay).

A worked example at 40%

An employee earning £70,000 in 2026/27 pays a £10,000 gross relief-at-source contribution. They fund £8,000; the provider reclaims £2,000. Their basic-rate limit extends from £37,700 to £47,700, so £10,000 of income that would have been taxed at 40% is taxed at 20% instead — worth another £2,000, but only once it is claimed.

An additional-rate taxpayer — income above £125,140 — gets the same £2,000 at source plus £2,500 by claim (25 percentage points, taking the total to 45%), so the same £10,000 of pension costs £5,500. In both cases the whole contribution must fall against income taxed at the higher or additional rate for the full extra relief; a contribution that straddles the £50,270 higher-rate threshold gets the extra 20% only on the part above it.

How to claim the extra relief

If you file self assessment, enter the gross contribution — what you paid plus the provider’s 20% reclaim — in the payments-to-registered-pension-schemes box. The band extension is then applied in your tax calculation and the extra relief lands as a lower balancing payment or a repayment. The most common error is entering the net £8,000 instead of the gross £10,000, which shortchanges the claim by a fifth.

If you do not file self assessment, you can ask HMRC to adjust your tax code instead — online through your personal tax account (the gov.uk “claim tax relief on your private pension payments” service) or in writing. HMRC then gives the relief through PAYE across the year. A missed claim can be made retrospectively: overpayment relief runs to four tax years after the end of the tax year the contribution was paid in (TMA 1970 Sch 1AB). Scottish taxpayers claim in the same way, with the extra relief calculated at the Scottish rates instead.

The £100,000–£125,140 zone: an effective 60%

Between £100,000 and £125,140 of adjusted net income the personal allowance is withdrawn at £1 for every £2 (ITA 2007 s.35), which makes the marginal rate on that band an effective 60%. A relief-at-source contribution reduces adjusted net income by the gross amount, so it can reinstate the allowance as well as extend the bands. An earner on £110,000 who pays a £10,000 gross contribution gets £2,000 at source and £4,000 through self assessment — £2,000 of ordinary higher-rate relief plus £2,000 from the restored allowance — a total of £6,000 on a £10,000 contribution, or 60%. The mechanics are set out in the £100k tax trap, explained, and the tax trap calculator runs the figures for any income.

The ceiling: the annual allowance

Marginal-rate relief presupposes the contribution fits within the annual allowance — £60,000 for 2026/27, tapering to as little as £10,000 for high earners (FA 2004 s.228) — and, for personal contributions, within 100% of your relevant UK earnings (FA 2004 s.190). Contributions above the allowance still receive relief but trigger an offsetting annual allowance charge. Check the headroom, including carry-forward, with the Pension Annual Allowance calculator.

FA 2004 s.192(4) (band extension) · FA 2004 s.193 (net pay) · ITA 2007 s.35 (personal-allowance taper) · FA 2004 s.228 (annual allowance) · TMA 1970 Sch 1AB (overpayment relief).