How much does HMRC top up your pension?
Tax relief turns a £80 contribution into £100, or as little as £40 of true cost if you're in the £100k-£125,140 trap band. Move the sliders to see your effective rate.
Last reviewed: 2026-05-20
Higher-rate (40%) taxpayer. Don't miss the extra 20% - it has to be claimed via Self-Assessment or it stays with HMRC.
As a higher-rate (40%) taxpayer, every £100 in the pension costs you £60.00 of take-home pay. That's 40% effective relief - the highest-return move in mainstream UK saving.
2026/27 rates. Assumes relief at source. Approximates the band the whole contribution sits in. AA tapers between £260k-£360k of adjusted income; carry-forward not modelled. Educational - not regulated advice.
Maxing out tax relief? Speak to a pension specialist.
Carry-forward, salary sacrifice and annual allowance interactions can save (or cost) thousands. A free first call with an FCA-regulated specialist can map it out.
What every £100 in the pot really costs you
25% top-up at source. Nothing to claim.
Extra 20% claimed via Self-Assessment.
£100k-£125,140 income. Recovers lost personal allowance too.
Extra 25% claimed via Self-Assessment.
Why pension relief is the UK's best tax break
Nothing else in mainstream UK personal finance comes close to a 40% or 60% guaranteed return at the point of contribution. ISAs are tax-free at withdrawal but the money going in is from already-taxed income. A pension flips that - the money going in skips income tax (and often NI if you use salary sacrifice), grows tax-free, and is then taxed at withdrawal. For anyone whose retirement tax band will be lower than today's (most people), it's pure arbitrage.
The 25% tax-free lump sum at retirement (up to a £268,275 Lump Sum Allowance for most people in 2026/27) makes the maths even stronger. A higher-rate taxpayer contributing £100, getting 40% relief, then drawing 25% tax-free and 75% at the basic 20% rate, ends up with roughly £85 back from a £60 outlay - before any investment growth.
The £100k-£125,140 trap
Earners in this band see their personal allowance taper away £1 for every £2 above £100,000. The effective marginal rate of income tax becomes 60%, and pension contributions are the cleanest way to escape it. £25,140 of pension contribution in that band recovers the entire personal allowance.
Related
Common questions
- How does UK pension tax relief work in 2026/27?
- When you pay into a personal pension, SIPP or workplace pension, the government adds tax relief at your marginal income tax rate. Most personal pensions use "relief at source" - you pay in net (£80) and the provider claims the basic-rate top-up (£20) from HMRC to make £100 in the pot. If you pay 40% or 45% tax, you claim the extra relief through Self-Assessment - so £100 in the pot ultimately costs a higher-rate taxpayer £60 and an additional-rate taxpayer £55. Workplace pensions using "salary sacrifice" or "net pay" give the relief automatically, with no Self-Assessment needed.
- What is the pension annual allowance in 2026/27?
- The standard annual allowance is £60,000 - the most you can pay in across all your pensions in a tax year and still get tax relief. Contributions are also capped at 100% of your relevant UK earnings. The allowance is tapered for very high earners: from "adjusted income" of £260,000 it reduces by £1 for every £2 above the threshold, down to a minimum of £10,000 once adjusted income hits £360,000. You can also carry forward unused allowance from the previous three tax years if you were a pension scheme member in those years.
- What is the 60% tax trap and how does pension contribution help?
- Between £100,000 and £125,140 of taxable income, the personal allowance tapers away at £1 for every £2 of income. So you lose £1 of tax-free allowance for every £2 you earn in that band - which means you pay 40% on the £2 PLUS lose £1 of allowance taxed at 40% = 20p extra. The effective marginal rate becomes 60%. A pension contribution lowers your adjusted net income £-for-£, recovering both the 40% income tax and the lost personal allowance. £1 in the pension costs as little as 40p of take-home pay in that band - the best risk-free return in the UK system.
- Can I get pension tax relief if I do not earn anything?
- Yes - up to £3,600 gross per year. Non-earners (including children, non-working spouses and retirees who have stopped paid work) can contribute £2,880 net into a personal pension or SIPP each year, and HMRC tops it up by £720 to £3,600. This is the only situation where you can get tax relief without paying any tax in the first place, and it is a powerful tool for grandparents funding grandchildren's pensions or a working spouse topping up a non-working spouse's pot.
- How do I claim higher-rate tax relief on my pension?
- If you are in a personal pension or SIPP using relief at source (most common setup), you get the basic-rate 20% added automatically. The extra 20% or 25% has to be claimed through Self-Assessment (the tax return) or by writing to HMRC. Provide the gross pension contribution figure and HMRC either issues a refund or adjusts your tax code. You can backdate claims for up to four tax years - many higher-rate taxpayers miss this and lose thousands. Workplace pensions using "salary sacrifice" or "net pay" already give full relief in the payslip, so no claim is needed.
- Is salary sacrifice better than personal contributions?
- Usually yes for employees. Salary sacrifice means you give up part of your salary in exchange for a higher employer pension contribution. You save income tax AND National Insurance (8% in the basic-rate band, 2% in the higher band) on the sacrificed amount. Many employers also pass on some or all of their 13.8% employer NI saving as additional pension contribution. The downside: a lower official salary can affect mortgage applications and some statutory benefits (statutory maternity pay, state second pension entitlement). For most over-50s near retirement, salary sacrifice is the highest-return move available.