How does carry forward work for unused pension annual allowance?

Full answer

Carry forward is a valuable but often overlooked mechanism that allows people with fluctuating income, a late bonus, or a business sale to make a much larger pension contribution in a single tax year than the standard £60,000 Annual Allowance would otherwise permit. **How much can be carried forward** You can carry forward unused Annual Allowance from the three previous tax years, using the earliest year's unused allowance first. For 2026/27, this means potentially drawing on unused allowance from 2023/24, 2024/25, and 2025/26, in addition to the full current year £60,000 allowance -- a maximum theoretical total of £240,000 if all four years' allowances were completely unused (though the annual allowance was lower in some earlier years than the current £60,000, so the actual figures depend on the specific years). **The relevant UK earnings limit still applies** Critically, carry forward only allows you to use MORE of the annual allowance -- it does not override the separate rule that you can only get tax relief on personal pension contributions up to 100% of your relevant UK earnings in the CURRENT tax year. So someone with £250,000 of carried-forward allowance available but only £70,000 of earnings in the current year could still only make a tax-relievable personal contribution up to £70,000, even though more annual allowance headroom exists (employer contributions are not restricted by the earnings limit in the same way, though they are still counted against the annual allowance itself). **You must have been a pension scheme member in the earlier years** To carry forward unused allowance from an earlier tax year, you must have been a member of a registered pension scheme at some point during that specific tax year (even with zero or minimal contributions actually made) -- someone who had no pension at all in a particular year cannot carry forward unused allowance from that year, since there was no annual allowance being "used" in the first place. **Tapered annual allowance complications for high earners** For very high earners subject to the tapered annual allowance (where the standard allowance reduces, down to a floor of £10,000, for those with adjusted income above £260,000), the amount that can be carried forward from an earlier tapered year is based on that year's REDUCED tapered allowance, not the standard £60,000 figure -- so high earners need to establish what their specific tapered allowance was in each of the three carry-forward years before calculating how much is available. **Worked example** A self-employed consultant has a bumper year with £180,000 of profits after several previous years earning around £40,000, during which they only contributed £10,000 a year to their pension (leaving £50,000 of unused allowance in each of those years, since the annual allowance was £60,000 throughout). In the current bumper year, they can combine their current £60,000 allowance with £50,000 of unused allowance carried forward from each of the three previous years (up to £150,000 additional headroom, if fully available and unused in each), giving total potential annual allowance headroom of up to £210,000 -- but because their relevant UK earnings in the current year are £180,000, their maximum actual tax-relievable personal contribution is capped at £180,000 (the lower of the earnings limit and the available annual allowance headroom). **Practical tip** HMRC does not automatically apply carry forward -- you (or your pension provider/adviser) must specifically calculate and claim it, so keep records of your pension contributions and scheme membership for at least the past three tax years to support a carry-forward claim if you plan a large one-off contribution.

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