What is pension tax relief?

For example, if an investor contributes £8,000 to their SIPP, tax relief is applied at 20% and £10,000 ends up available for investment once £2,000 is collected from HMRC by the pension provider. A higher rate taxpayer could claim back up to a extra 20% via their tax return, reducing the overall cost of the contribution to as little as £6,000. In the same instance, additional rate taxpayers could claim back up to a further 25% making the cost just £5,500 for a £10,000 contribution. 

That’s a huge boost to your money right away, and an uplift that would otherwise only come with lots of risk or plenty of time in the market. You can find out more about how a SIPP works here.

Please note that for workplace pensions offering ‘salary sacrifice’ or ‘net pay’ arrangements, receive all tax relief automatically, including higher and additional rates, is automatic. That’s because it has the effect of reducing salary, with the specified amount of pay diverted into a pension instead. Similarly, with defined benefits schemes such as final salary pensions there is usually no relief to be claimed because personal contributions are made to the scheme from gross rather than net pay. 

Pension contribution rules

The generosity of tax relief does, however, come with limits and there are several rules and regulations with pensions contributions to be aware of. Here’s a breakdown of the main considerations on how much you can contribute to your pension:

• Contributions that attract relief are restricted to 100% of your relevant UK earnings – essentially earned income rather than any other form of income such as dividends or interest.
• Contributions, including those paid by your employer, are also subject to an ‘annual allowance’, which is £60,000.
• Higher earners get a lower annual allowance, which could limit their maximum contribution to as little as £10,000 a year. The rules on when this ‘tapered annual allowance’ kicks in are complicated, but HMRC has more information on how to calculate it here.
• For people who receive ‘flexible’ retirement benefits, such as a flexi-access pension (e.g. pension drawdown or taking more than 25% cash from their pension), a lower annual allowance of £10,000 applies.
• If you haven’t used your full annual allowance from up to three previous years, you might be able to carry it forward and use it in the current tax year provided your earnings are high enough and you have been a member of a registered pension scheme in those preceding years.
• People earning more than £60,000 who wish to maximise pension contributions may be able to take advantage of this. Additional guidance and examples can be found on the government’s money helper website.

Remember, the tax treatment of pensions depends on individual circumstances and is subject to change in future. 

Non-taxpayers can benefit too

It is also possible for non-taxpayers to benefit from a certain amount of tax relief. In the 2025/26 tax year, individuals under age 75 can contribute up to £2,880 to a pension and receive a further £720, resulting in an overall contribution of £3,600. In addition to upfront tax relief, money in a pension is free from capital gains tax and any income tax. 

Is a pension better than an ISA?

For those who need access to their money before retirement (the minimum for pensions being 55 currently and rising to 57), an ISA (Individual Savings Account) offers greater flexibility. At present, pension benefits cannot be accessed until this time, and this minimum age is set to rise in the future. For those choosing a savings vehicle for retirement, the decision is a trickier one. Many investments are available in both ISAs and pensions. 

Assuming that investments grow at the same rate in both a pension and a conventional ISA account, in the majority of cases the benefit of upfront tax relief at a person’s highest income tax rate means investing in a pension works out mathematically better under current rules. This reflects the fact that pension tax relief on the way in makes an important contribution to overall return. The fact that you can generally take 25% as a tax-free lump sum before drawing the pension also helps. 

The main exception to this is for a basic rate taxpayer funding a pension and then becoming a higher rate taxpayer when taking benefits – a situation that could arise if an entire fund is taken in a lump sum, either on purpose or accidentally through poor tax planning. In this scenario, an ISA would produce a better overall return. However, given that it is possible to take periodic income or variable lump sums from pension pots there is scope to plan how to withdraw money tax efficiently. 

A further option for younger investors, a Lifetime ISA, can form up to £4,000 of the £20,000 ISA allowance for those eligible. Available to UK residents aged between 18 and 40 saving for retirement or a house deposit, it is possible to pay in up to £4,000 each tax year and continue making contributions up to the age of 50. The government will add a 25% bonus to contributions – a maximum of £1,000 each year – and withdrawals are penalty-free from age 60 or if used for an eligible house purchase. 

Take advantage of pension tax relief while it lasts

As it stands today, a pension remains the financially more appealing retirement investment vehicle for most people, including those remaining in the same tax band, or who drop down a tax band or two, once they draw their pension. 

However, no one can be sure of pension rules in the future. Tax relief may become less generous, especially for higher earners. For instance, a flat-rate incentive of between 25% and 33% for all pension contributions has been suggested in some quarters. It may make sense for some people to secure pension tax relief in its current form while it lasts. 

How to claim tax relief on pension contributions 

Many people assume the process of claiming higher or additional rate pension tax relief outside of salary sacrific or net pay arrangements is complicated, but in fact, it’s pretty straightforward. 

You can claim the tax relief on your Self Assessment tax return by stating the gross amount of your total pension contributions for the tax year i.e. including the 20% basic rate relief already added. If you use the online service, HMRC calculates how much tax you have overpaid and then offsets any additional tax you owe against it. 

At the end of the process your net tax position for the year is adjusted. If you have overpaid the balance can be refunded to your bank account as a tax rebate, or you can choose to pay less tax each month in the next financial year through a new tax code. If you still owe some tax, you can choose to make a single payment from your bank account or pay in instalments from your salary, again through a revised tax code.  

You can also call or write to HMRC in respect of higher rate tax relief. If you are employed, the relevant address will be on your P60 or payslip. It is worth noting that you will need to submit a new letter every time you alter your pension contributions or your salary changes, so Self Assessment could be a more convenient route if you are likely to remain in the higher rates of tax, though it will take longer to get the relief. 

If you have previously missed out on relief through not claiming, you can make backdated claims for higher rate tax relief on your pension contributions for the past four tax years. 

The taxation of pensions is based on individual circumstances and may be subject to change in the future.