Pension carry forward: using unused allowance from earlier years

Carry forward is a rule that lets you pay more into your pension than the normal yearly limit and still get tax relief on the whole amount. Most people can contribute up to £60,000 a year, or 100% of their earnings if lower, while claiming tax relief¹. If you did not use all of your allowance in the previous three tax years, you can add the unused amounts to this year's allowance and pay in a much larger sum in one go².

The rule exists because many people's pension saving is lumpy rather than steady. A self-employed person with a good year, someone returning to work after a break, or a person approaching retirement with savings to move out of taxable accounts may all want to make a large single contribution. HMRC's guidance is straightforward on the mechanics: you can carry forward unused allowance from the 3 previous tax years, and you do not need to report this to HMRC².

Two conditions do most of the work in practice. First, you must have been a member of a pension scheme in each year you carry forward from². Second, tax relief on your own contributions is capped at 100% of your earnings in the year you pay in³, so carry forward lifts the allowance ceiling, not the earnings ceiling. One provider states that carry forward can allow as much as £200,000 to be invested at once⁴, but what any individual can actually use depends entirely on their own history and earnings.

Carry forward: three earlier tax years on top of this year's allowance

The annual allowance is the most you can pay into your pensions in a tax year before a tax charge applies, and the dedicated guide to the pension annual allowance covers how it works. Carry forward sits on top of it. HMRC's guidance states that you can carry forward unused annual allowances from the 3 previous tax years, use them in order from earliest to most recent, and carry any unused remainder forward again to a future year². Which?'s guidance describes the same thing from the saver's side: you can make use of any unused annual allowance left over from the previous three tax years⁶.

The three-year window moves with the tax year. In any given tax year you look back at the three tax years that have just finished, work out how much allowance you left unused in each, and add those amounts to the current year's allowance. A year's unused allowance is only available for three tax years after it arises, and then it disappears: Royal London's guidance makes the point that any allowance you do not use can be carried forward and used in the new tax year, but only while it is still within the window⁷.

Providers describe the rule in the same terms. AJ Bell's reference material says you can carry forward allowances you did not use in the previous three tax years⁸. Standard Life's technical guidance says individuals can carry forward any unused annual allowances from the previous three tax years and add these to the allowance for the current year⁹. interactive investor's guide to the carry forward rule describes it as a way to take advantage of unused annual allowances from the previous three tax years¹⁰. The consistency matters: this is a tax rule, not a product feature, so it works the same way whichever provider holds your pension.

Why there is no single maximum contribution

People often ask what the largest possible carry forward payment is, and the honest answer is that there is no fixed figure. One provider, Hargreaves Lansdown, states that you may be able to carry forward unused allowances to invest as much as £200,000 now⁴. That figure assumes a full allowance left unused in each of three years on top of the current year's, and it is a provider's illustration rather than a statutory maximum.

What you personally can pay in depends on three things. The first is how much allowance you actually left unused in each of the three earlier years, which depends on your own contributions and, in earlier years, on the allowance that applied then. The annual allowance was £40,000 in earlier years, as Which? reported at the time when describing the relief then available on contributions up to 100% of annual earnings or £40,000, whichever was lower¹¹. Allowances from those years are carried forward at their original size, not uplifted to today's figures, so a person carrying forward from a £40,000 year has less to use than one carrying forward from £60,000 years.

The second is your earnings in the year you pay in. interactive investor's guidance notes that you can only put more than £60,000 into your pension if you qualify for carry forward¹², but qualifying for the allowance is only half the test. The third is the type of income you have: tax relief on personal contributions is limited to relevant UK earnings, so investment income and most pension income do not count towards the cap even when they give you the money to contribute.

Who can carry forward: membership of a registered pension

The membership condition is the one that catches people out. HMRC's guidance states that you cannot carry forward unused allowances from any tax year where you were not a member of at least one UK registered pension scheme, or a qualifying overseas pension scheme². Which? puts the same point plainly: you must have been a member of a UK-registered pension scheme, and the state pension does not count, in each of the tax years you carry forward from⁶.

This does not mean you need to have been paying money in. Membership is what matters, not contributions. Someone who was enrolled in a workplace pension but opted out after a short period, or who had a dormant personal pension from years earlier, was still a member in those years, and any allowance they did not use can be carried forward. Options Pensions' fact sheet for SIPP members states the rule as it applies in practice: to be able to carry forward you must have been a member of a UK pension scheme during the tax year you want to carry forward from¹³.

Bestinvest's jargon guide adds the same condition from the saver's angle: you also need to have had a registered pension in the years you are carrying forward your unused allowance from¹⁴. So a person who had no pension at all in, say, the earliest of the three years simply loses that year's potential carry forward. The other two years can still be used, provided the membership condition is met for each of them.

The years do not have to involve the same pension. You might have been in a workplace scheme in one year, a personal pension in another, and a SIPP in a third. Carry forward looks at your total pension saving across all schemes in each year, which is why working out your unused allowance properly means adding up everything you paid in everywhere, not just into the pension you are contributing to now.

Tax relief is capped at 100% of your earnings

Carry forward raises the allowance ceiling, but a separate rule caps the tax relief itself. NI Direct's official guidance for Northern Ireland states that you can get tax relief on what you pay in, up to 100 per cent of your earnings, as long as you are under 75³. Its wider introduction to workplace, personal and stakeholder pensions says the same: each year you receive tax relief on your pension contributions of up to 100 per cent of your UK earnings, meaning salary and other earned income¹⁵.

Which?'s guidance on tax reliefs confirms that relief is available on contributions up to 100% of your annual earnings¹⁶. Fidelity's planning guidance adds the floor for people with little or no income: if your taxable earnings in the year are below the annual allowance, tax relief is limited to 100% of your earnings, or to £3,600 if you have no earnings⁵. The £3,600 figure is the well-known exception for non-earners, covered in more detail in can I get pension tax relief if I have no earnings?

The practical consequence is that carry forward is mainly a tool for people with substantial earnings in the year of payment. Tax relief on a person's own contributions is limited to 100% of their earnings in that year, so a person with low earnings cannot fill a large carried-forward allowance from their own money, whatever unused allowance they have built up. interactive investor's tax guidance states the combined rule for the current tax year: tax relief is available on pension contributions up to 100% of earnings, capped at £60,000 per year¹⁷.

There is an important exception to the earnings cap: employer contributions. Contributions paid by an employer, including salary sacrifice arrangements, do not count against your personal earnings limit, because they are employer payments rather than yours. interactive investor's guidance on employer contributions to a SIPP notes that carry forward rules may enable you to use any unused allowance from the previous three tax years¹⁸, and employer payments are tested against the annual allowance rather than your earnings. For someone whose own earnings are modest but whose company could pay in on their behalf, that distinction changes what is possible.

Fill this year's annual allowance first

The order in which allowance is used is fixed, and it matters when you are planning a large contribution. HMRC's guidance states that carried-forward allowances are used in order from earliest to most recent². interactive investor's SIPP tax relief guidance states the first step: if you are eligible, you use up any unused annual allowance from the earliest year first¹⁹. PensionBee's guide to the carry forward rule describes the same sequence, starting with the earliest year²⁰.

The full order is: this year's annual allowance is used first, then the unused allowance from the earliest of the three previous years, then the middle year, then the most recent. interactive investor's contributions guidance lists the conditions together: you must have been a member of a pension scheme in each tax year you carry forward from, have unused allowance from those years, have used up all of this year's allowance, and have earnings at least equal to the total contribution in the year of payment²¹.

Allowance is consumed in a fixed order: current year first, then the carried-forward years from oldest to newest.

The order matters because of the three-year window. If you pay in a large sum that uses this year's allowance and part of the earliest carried-forward year, any allowance left unused in the most recent year is still within its window and can be carried forward again into a future tax year². But if you let the earliest year's allowance sit unused, it drops out of the window first and is lost. For someone planning contributions over two or more years, using the oldest allowance first preserves the most flexibility.

Using carry forward with a SIPP or personal pension

Carry forward works with SIPPs and personal pensions in exactly the same way as with workplace schemes, because it is a rule about your total pension saving, not about any one product. Bestinvest's SIPP allowance guidance states that if you paid less than your allowance into your SIPP and other pensions in any of the last three tax years, you can carry forward, provided you held a SIPP or other UK registered pension for each of those three years and your total contributions do not exceed your current earnings²². interactive investor's SIPP FAQ confirms the same for its own SIPP: you can carry forward any unused allowance from the previous 3 tax years²³.

This makes SIPPs a natural home for large one-off contributions, because you control the timing and size of payments directly. Hargreaves Lansdown's personal pension pages make the same point for personal pensions generally: you may be able to pay in more than £60,000 if you have unused allowance from previous years²⁴. interactive investor's guide to private pensions says you may be able to use carry forward rules to contribute more by using unused allowances from the previous three years²⁵.

The membership condition still applies across all your pensions, not just the SIPP. Someone who opened their first SIPP this year but was in a workplace scheme for the three previous years can carry forward the unused allowance from those workplace years into the SIPP. What counts is whether you were a member of a registered pension scheme in each year, not which scheme it was or whether you still hold it. If you have old pots scattered across former employers, the guides to finding lost pensions and transferring pensions between providers cover tracking them down and consolidating them.

Employer contributions can also go into a SIPP, and interactive investor notes that carry forward rules may enable you to use unused allowance from the previous three tax years when planning them¹⁸. For company owners and contractors, combining employer contributions with carry forward is a common way to move larger sums into a pension in a single year, subject to the annual allowance rather than the personal earnings cap.

Checking your unused allowance before paying in

Before making a large contribution, you need to know how much allowance you used in each of the previous three tax years. HMRC publishes guidance on checking whether you have unused annual allowances on your pension savings, which sets out how to work through the calculation year by year². The starting point is your pension contributions in each year, across every scheme you belonged to, including employer contributions and, in earlier years, any pension input from defined benefit schemes, which are measured differently.

Your pension providers can supply the raw material. Providers must tell you how much has been paid in, and a pension statement showing contributions for each tax year is what you need to work out the unused amounts. Which?'s guidance for pension savers filing their tax return lists the questions to have answers for, including what you paid in and when²⁶, and its earlier piece for the 2022-23 tax year makes the same point about knowing your contributions before claiming relief²⁷.

Once you have the figures, the calculation is simple subtraction for money purchase schemes: for each of the three years, take the allowance that applied that year, subtract your total pension input, and what remains is your unused allowance for that year. J.P. Morgan's guidance notes that carry forward allows you to receive tax relief on any unused portion of your annual allowance from the previous three tax years²⁸. You do not need to report the carry forward to HMRC², but you do need to keep the workings in case HMRC asks, and higher-rate taxpayers claiming extra relief through self assessment will need accurate figures for that regardless.

Where carry forward stops

Several things cut carry forward off. The first is the membership condition: a year in which you were not a member of any registered pension scheme contributes nothing². The second is the window itself: unused allowance only survives three tax years, so the oldest year's allowance is constantly falling out of use⁷.

The third is the money purchase annual allowance. Which?'s guidance is explicit: if you have triggered the money purchase annual allowance, you cannot carry forward any unused allowances from previous years⁶. The MPAA is triggered by flexibly accessing money from a defined contribution pension, and HMRC's guidance adds a further distinction: unused money purchase annual allowance cannot be carried forward, but unused alternative annual allowance can². The guides to the money purchase annual allowance and the tapered annual allowance cover these reduced and tapered limits, which also shrink what can be carried forward in the years they apply to.

The fourth is the earnings cap. Carry forward does not create tax relief where the earnings limit would deny it: relief on your own contributions remains limited to 100% of your earnings, or £3,600 if you have none⁵, and it is only available below age 75³. A person with no relevant earnings cannot use carry forward to build up relief, whatever their unused allowance.

Finally, carry forward is about the annual allowance, not about what happens when you eventually take money out. The rules on tax-free cash and how pension income is taxed apply at the other end of the process, and the abolition of the lifetime allowance changed the overall picture for very large pension pots. If you are unsure whether a large contribution is right for you, free guidance is available through Pension Wise, and a financial adviser can check the arithmetic for your specific circumstances.