Pension Tax Relief Explained: How to Get Up to 45% Back (2026/27)

Pension tax relief is one of the most generous perks in the UK tax system, yet many people leave money on the table. In the 2026/27 tax year, putting money into a pension can effectively give you back the Income Tax you paid on it - up to 45% - turning every £100 saved into far less out of your own pocket. This guide explains how pension tax relief works, how much you can get, and how to make sure you claim every penny.

What is pension tax relief?

Pension tax relief means the government tops up your pension contributions, effectively refunding the Income Tax you paid on that money. You get relief at your marginal (highest) Income Tax rate, so the more tax you pay, the more relief you receive. You can see how the bands work on the official pension tax relief (GOV.UK) guidance.

• Basic-rate taxpayers get 20% relief.
• Higher-rate taxpayers get 40% relief.
• Additional-rate taxpayers get 45% relief.

The effect is that money you would otherwise have lost to tax goes into your pension instead. You can estimate your own figures with our pension tax relief calculator, or check the tax you currently pay with the income tax calculator.

What does £100 in your pension really cost?

Because relief is given at your highest rate of Income Tax, the true cost of adding £100 to your pension depends on which tax band you fall into. The table below shows how this works for 2026/27.

So for an additional-rate taxpayer, £100 of pension saving costs just £55 - the other £45 is effectively funded by tax relief.

How relief is given: relief at source vs net pay

There are two main ways pension tax relief reaches your pot, and knowing which one applies to you matters - because under one method, higher and additional-rate taxpayers have to take action to get their full relief.

Relief at source

This is common for personal and many workplace pensions. Your provider automatically adds 20% basic-rate relief to your contributions. However, higher- and additional-rate taxpayers must claim the extra 20% or 25% themselves, usually through a Self Assessment tax return (or by contacting HMRC). If you do not claim, you miss out on the top-up.

Net pay arrangement

Some workplace schemes use a "net pay" arrangement. Here your contributions come out of your salary before tax is calculated, so you automatically receive full relief at your marginal rate - there is nothing extra to claim. This works much like salary sacrifice, which can boost pension saving further.

Tip: If you are a higher or additional-rate taxpayer in a relief-at-source scheme, check whether you have been claiming the extra relief. You may be able to backdate a claim for previous tax years and recover money you are owed.

How much can you pay in? The Annual Allowance

You can usually get tax relief on contributions up to the Annual Allowance of £60,000 a year, or 100% of your earnings if that is lower. This limit covers your own contributions, employer contributions and tax relief combined. The full rules are set out in the annual allowance (GOV.UK) guidance.

The tapered Annual Allowance

High earners face a reduced allowance. If your "adjusted income" is over £260,000, your Annual Allowance is tapered, falling by £1 for every £2 of income above the threshold, down to a minimum of £10,000. You can sense-check your position with our pension annual allowance calculator.

Carry forward

If you have not used your full Annual Allowance in recent years, carry forward lets you use unused allowance from the previous three tax years, provided you have enough earnings in the current year to support the contribution. This can be valuable if you have had a strong earnings year or received a bonus.

A worked example: higher-rate relief in action

Imagine a higher-rate taxpayer who wants to boost their pension. Here is how the relief stacks up:

1. They pay £8,000 into their pension from their own money.
2. Their provider adds basic-rate relief, bringing the pot contribution up to £10,000.
3. They then claim a further £2,000 back through Self Assessment.

The result: £10,000 invested in their pension cost them just £6,000 overall. That is the power of higher-rate tax relief - but only if you remember to claim the extra portion. You can model how a steady contribution grows over time with our pension calculator.

What about taking the money out?

Tax relief is not the only advantage. When you reach retirement, you can usually take 25% of your pension pot tax-free (up to a limit). The rest is taxed as income when you draw it, but many people pay a lower rate of tax in retirement than during their working years, adding to the overall benefit. To estimate the tax on a withdrawal, try the pension lump sum tax calculator or plan ongoing income with the pension drawdown calculator.

How to claim higher and additional-rate relief

For anyone in a relief-at-source scheme, the basic-rate top-up arrives automatically but the extra relief does not. Claiming it is straightforward once you know the steps, and it can be worth a substantial sum each year.

1. Confirm the scheme type. Check with your provider or payroll whether your pension uses relief at source or a net pay arrangement. Only relief-at-source schemes require you to claim the higher and additional-rate portion.
2. Gather your contribution figures. Add up the personal contributions you made over the tax year, including the basic-rate relief already added by the provider.
3. Claim through Self Assessment. Enter the grossed-up contributions on your tax return. HMRC then extends your basic-rate band, so more of your income is taxed at the lower rate and you receive the extra 20% or 25%.
4. No tax return? Contact HMRC. If you don't normally file, you can ask HMRC to adjust your tax code or make a claim directly.
5. Check earlier years. If you've missed claims in the past, you may be able to backdate them within HMRC's time limits.

You can estimate what you're owed with the pension tax relief calculator before you start, so you know roughly what figure to expect back.

Salary sacrifice: a different route to relief

Salary sacrifice is an increasingly popular way to fund a pension. Instead of paying contributions from your take-home pay, you agree to give up part of your gross salary and your employer pays it into your pension instead. Because the money never counts as salary, you get full relief at your marginal rate automatically, and you also save the National Insurance you would have paid on that slice of pay.

Employers often pass on some or all of their own National Insurance saving too, which can make the contribution go further than a standard relief-at-source payment. The trade-off is that a lower headline salary can affect things like mortgage affordability assessments and some earnings-related benefits, so it suits people who can comfortably reduce their cash pay. If you want to compare the take-home effect, our salary sacrifice calculator shows the difference, and the salary sacrifice guide covers the wider pros and cons.

Common pension tax relief mistakes

Pension tax relief is generous, but it's also where people most often lose out. These are the slips worth avoiding.

• Never claiming higher-rate relief. In a relief-at-source scheme, the extra 20% or 25% only comes if you claim it. Many higher-rate taxpayers simply never do.
• Exceeding the Annual Allowance. Contributions above £60,000 (or 100% of your earnings if lower) can trigger a tax charge. Check the position with the pension annual allowance calculator.
• Forgetting the taper. If your adjusted income exceeds £260,000, your allowance reduces by £1 for every £2 above the threshold, down to a £10,000 minimum.
• Missing carry forward. Unused allowance from the previous three tax years can be used, but only if you have enough earnings in the current year to support the contribution.
• Assuming relief is unlimited. Relief only applies up to your earnings; contributions beyond 100% of your relevant earnings won't attract relief.

Used carefully, these rules let you put away a large amount tax-efficiently. You can model how steady contributions build over the years with the pension calculator.

Frequently asked questions

Do I automatically get higher-rate pension tax relief?

Not always. In relief-at-source schemes, only 20% basic-rate relief is added automatically. Higher and additional-rate taxpayers must claim the extra 20% or 25% through Self Assessment or by contacting HMRC. In net pay arrangements, full relief is automatic.

How much can I pay into a pension with tax relief each year?

For 2026/27 you can usually get relief on contributions up to £60,000, or 100% of your earnings if that is lower. High earners with adjusted income over £260,000 may have a tapered allowance reducing to as little as £10,000.

What is carry forward?

Carry forward lets you use any unused Annual Allowance from the previous three tax years, as long as you have enough earnings in the current year to cover the contribution.

Can I claim pension tax relief for previous years?

If you are a higher or additional-rate taxpayer who never claimed the extra relief you were owed, you may be able to claim for earlier tax years. Contact HMRC or check the rules on gov.uk for the time limits that apply.

How much does £100 in my pension actually cost me?

It depends on your tax band: £80 for a basic-rate taxpayer, £60 for a higher-rate taxpayer, and £55 for an additional-rate taxpayer, once tax relief is taken into account.

How much of my pension can I take tax-free?

You can usually take 25% of your pension pot tax-free at retirement, up to a limit. The remainder is taxed as income when you withdraw it.

Related calculators: Pension Tax Relief Calculator, Pension Pot Calculator, Retirement Calculator and the SIPP Calculator.

This guide is general information for the 2026/27 tax year, not personal financial advice. Check your own circumstances at gov.uk.