Annual Allowance: Pension Rules, Limits and How to Avoid Tax Charges
The carry forward pension allowance rules can be particularly useful for people whose income or pension contributions vary, as well as those who receive a bonus, sell a business or want to make a larger pension contribution before retirement.
This guide explains how carry forward works, who qualifies and how relevant earnings, the tapered annual allowance and the Money Purchase Annual Allowance can affect the amount available.
What Is Carry Forward Pension Allowance?
Carry forward pension allowance allows you to use any unused pension annual allowance from the previous three tax years in the current tax year. This could increase the amount you can contribute into your pensions without triggering an annual allowance tax charge.
You do not need to apply to use carry forward. Instead, it is considered when assessing whether your total pension savings exceed the annual allowance available to you. However, you should retain clear records showing how much allowance was available and used in each relevant tax year.
How Carry Forward Works in Practice
To use unused allowance from an earlier tax year, you must have been a member of a UK-registered pension scheme during that year. You do not necessarily need to have made contributions. Active, deferred and pensioner members may all meet this requirement.
For example, someone who used £30,000 of a £60,000 annual allowance in a previous tax year may have £30,000 available to carry forward, provided they meet the relevant conditions. This unused amount could then be carried forward once their current year’s allowance has been used.
Carry forward does not allow pension contributions to be backdated. The contribution is made in the current tax year, but unused allowance from previous years is considered when it is assessed against the annual allowance rules.
How the Annual Allowance Works
For the 2026/27 tax year, the standard pension annual allowance is £60,000. It applies across all your private pensions and measures the total value of pension savings made during the tax year, known as the pension input amount.
For defined contribution pensions, this generally includes:
- Personal contributions, including tax relief added by the pension provider
- Employer contributions paid into your pension during the tax year
- Third-party contributions made into your pension on your behalf
For defined benefit pensions, the pension input amount is based on the increase in the value of your pension benefits rather than the contributions paid.
The annual allowance is the amount of pension saving you can normally make without incurring an annual allowance tax charge. If your pension input amount exceeds your available allowance, the excess may be added to your taxable income and taxed at your marginal rate.
Your personal annual allowance may be lower if the tapered annual allowance or the Money Purchase Annual Allowance (MPAA) applies. It is therefore important to establish your available allowance before calculating any annual allowance pension carry forward.
Who Can Use Carry Forward Pension Allowance?
You may be able to use carry forward pension allowance if your pension input amount exceeds your available annual allowance and you have unused allowance from one or more of the previous three tax years.
To qualify, you must have been a member of a registered pension scheme during each tax year from which you want to carry forward unused allowance. However, you do not need to contribute to the same pension scheme when using the allowance.
Carry forward may be useful if:
- Your income has increased
- You have received a bonus or irregular payment
- You are self-employed with fluctuating profits
- Your employer wants to make a larger pension contribution
- You are approaching retirement and want to increase your pension savings
- You have previously contributed less than your annual allowance
Having unused annual allowance does not automatically mean you can make larger personal contributions that qualify for tax relief.
How to Calculate Unused Allowances
To work out how to carry forward pension allowance, calculate your pension input amount for the current tax year and the previous three tax years, then compare it with the annual allowance available in each year.
The basic process is to:
- Identify your annual allowance for each year, taking any tapering or MPAA restrictions into account.
- Calculate your pension input amount for each year.
- Subtract your pension input amount from the available annual allowance.
- Use the current year’s allowance first, then any unused allowance from the earliest of the previous three tax years.
Unused allowance is always taken from the oldest available tax year first, as any remaining allowance expires after three years.
Illustrative Carry Forward Calculation
Below is an illustrative example for someone who wants to make total pension savings of £100,000 during 2026/27 and has not used any of their current-year allowance.
| Tax year | Annual allowance | Pension input amount | Unused allowance |
| 2023/24 | £60,000 | £40,000 | £20,000 |
| 2024/25 | £60,000 | £50,000 | £10,000 |
| 2025/26 | £60,000 | £45,000 | £15,000 |
| 2026/27 | £60,000 | £100,000 | £0 unused allowance (£40,000 requires carry forward) |
The first £60,000 uses the 2026/27 annual allowance. The remaining £40,000 is covered using unused allowances from the three previous tax years, leaving £5,000 of unused allowance from 2025/26 that could still be available in the following tax year, provided it is within the three-year carry forward period.
More complex calculations may be needed where the tapered annual allowance applies, defined benefit pensions are involved, or unused allowance has already been used in an earlier tax year.
Relevant Earnings for Carry Forward
Carry forward can increase the annual allowance available to you, but it does not increase the amount of personal contributions that qualify for tax relief.
Tax relief on personal pension contributions is generally limited to the higher of:
- 100% of your relevant UK earnings for the tax year
- £3,600 gross if you have little or no relevant UK earnings
For example, if your relevant UK earnings are £30,000, you would not normally receive tax relief on a personal contribution of £60,000 simply because you have unused annual allowance available.
Employer contributions are not subject to the same relevant earnings limit, although they still count towards the annual allowance.
Earnings Limits and Tax Relief Rules
Relevant UK earnings generally include employment income, bonuses, overtime and profits from self-employment. They do not usually include pension income, dividends, savings interest or most rental income.
The annual allowance and relevant earnings limit are separate tests. To receive tax relief on a personal contribution, you need to have:
- Sufficient annual allowance, including any carry forward
- Enough relevant UK earnings in the current tax year
This distinction is an important part of understanding HMRC carry forward pension allowance rules.
Tapered Annual Allowance and MPAA Restrictions
Some high earners may have a reduced annual allowance under the tapered annual allowance rules. Where this applies, unused allowance is calculated using the reduced allowance for each relevant tax year.
Different restrictions apply if you have triggered the Money Purchase Annual Allowance (MPAA), usually by flexibly accessing a defined contribution pension. The MPAA is currently £10,000, and unused annual allowance cannot be carried forward to increase this limit for defined contribution pension savings.
People with both defined contribution and defined benefit pensions may have additional considerations, so calculations may become more complex.
Using Current-Year Allowance First
The current tax year’s annual allowance must always be used before any unused allowance from previous years.
If additional allowance is needed, unused allowance is taken from the earliest of the previous three tax years first. Any allowance that falls outside the three-year carry forward period expires and can no longer be used.
Common Carry Forward Mistakes
Errors can result in an unexpected annual allowance charge or a personal contribution that does not qualify fully for tax relief.
Common mistakes include:
- Assuming everyone has three years of unused allowance
- Forgetting the pension scheme membership requirement
- Ignoring employer contributions
- Confusing net and gross contributions
- Assuming carry forward overrides the relevant earnings limit
- Failing to account for tapering or the MPAA
- Miscalculating defined benefit pension growth
It is also worth checking whether unused allowance was already used in an earlier tax year, as an amount cannot be carried forward twice.
Carry Forward for Employers and Businesses
Employer contributions can help employees, directors and business owners make larger pension contributions. Unlike personal contributions, they are not limited by the employee’s relevant UK earnings, although they still count towards the annual allowance.
For Corporation Tax relief, contributions generally need to be made wholly and exclusively for the purposes of the trade and are usually treated as paid when received by the pension scheme.
Businesses considering substantial employer contributions should review both the individual’s available pension allowances and the company’s wider tax position.
When To Seek Professional Advice
The carry forward rules can appear straightforward, but calculations become more difficult where income is high, several pensions are held or defined benefit pension growth must be assessed.
Professional advice may be useful if:
- You are unsure how much unused allowance remains
- Your income could trigger the tapered annual allowance
- You have flexibly accessed pension benefits
- You belong to a defined benefit scheme
- A large employer contribution is being considered
- You want to contribute close to your relevant earnings limit
- You may already have exceeded the annual allowance
My Pension Expert can review your pensions and help you understand how carry forward pension allowance could fit into your wider retirement strategy.
Frequently Asked Questions
This information is for guidance only and does not constitute financial advice. Pension and tax rules depend on individual circumstances and may change in the future. The value of investments can fall as well as rise, and you may get back less than you invest.
