Pension Carry Forward: £220,000 of Tax Relief You Didn't Know You Had Before April 5

The rules are simpler than most people think. You can carry forward unused annual allowance from the previous three tax years, but you must use the oldest year's allowance first.

Here's the maths for someone who's only contributed via auto-enrolment (say £3,000/year including employer match) across all four years:

Tax Year	Annual Allowance	Used	Carried Forward
2022/23	£40,000	£3,000	£37,000
2023/24	£60,000	£3,000	£57,000
2024/25	£60,000	£3,000	£57,000
2025/26	£60,000	—	£60,000
Total			£211,000

That's £211,000 you could contribute this year with full tax relief — assuming your earnings support it, since relief is capped at 100% of your annual earnings.

One critical detail: the 2022/23 allowance was only £40,000. The government raised it to £60,000 from 2023/24 onwards. After 5 April 2026, you lose the 2022/23 year and replace it with 2025/26 — both at £60,000. The total available actually increases, but you permanently lose whatever was unused from 2022/23.

Pension tax relief works at your marginal rate. For a higher-rate taxpayer contributing £60,000 through a relief-at-source pension, the arithmetic is brutal in the best way:

• You pay in £48,000 from your bank account
• Your pension provider claims 20% basic rate relief from HMRC, adding £12,000 to your pot
• You claim back another 20% (£12,000) through Self Assessment
• Net cost to you: £36,000. Pension gets: £60,000.

For additional-rate taxpayers at 45%, it's even more generous. That £60,000 contribution costs just £33,000 after all relief is claimed.

Now multiply that across carry forward. A higher-rate taxpayer who contributes £200,000 using carry forward effectively receives £80,000 in tax relief. That's not an edge case or a loophole — it's exactly how the system is designed to work, per HMRC's own guidance.

Carry forward is most powerful for three groups:

Business owners and the self-employed who had a lean year followed by a profitable one. If you earned £30,000 in 2022/23 and £120,000 in 2025/26, you can use carry forward to shelter a massive chunk of this year's income. Your contribution is limited to 100% of current earnings, so that £120,000 salary supports up to £120,000 of contributions (using current year plus carry forward).

Higher earners approaching retirement who have cash sitting in ISAs or savings accounts. Moving £100,000+ into a pension before April 5 gives immediate tax relief and compound growth in a tax-free wrapper. For someone aged 55+, the 25% tax-free lump sum means a portion comes back out without further tax.

Anyone who received a bonus, inheritance, or property sale proceeds — a one-off cash event is the perfect trigger for carry forward.

Who should not rush? Anyone with adjusted income above £260,000 faces the tapered annual allowance, which can reduce the standard £60,000 down to as low as £10,000. The taper affects carry forward too — you can only carry forward unused tapered allowance, not the full £60,000. Get this wrong and you'll face an annual allowance charge.

Anyone who has flexibly accessed their pension (taken income via drawdown, for example) triggers the Money Purchase Annual Allowance of just £10,000. Carry forward doesn't override this for money purchase contributions.

Directors paying via dividends face a particular wrinkle. Dividend income doesn't count as "relevant UK earnings" for pension relief purposes. Only salary, bonus, and trading income qualify. If you pay yourself £12,570 salary and the rest in dividends, your pension contributions are capped at £12,570 — regardless of carry forward headroom. The fix: vote yourself an additional salary or bonus before April 5. Yes, you'll pay employer NI at 15% and employee NI, but the 40% pension relief more than compensates for most higher-rate taxpayers.

Time is short. Here's the practical checklist:

1. Confirm your unused allowance. Request pension statements from every scheme you've contributed to since April 2022. Your workplace HR or pension administrator should have this. If you're in a defined benefit scheme, the calculation is different — it's based on the increase in your benefits, not cash contributions. Get a pension input amount from your scheme.

2. Check your earnings. Tax relief is capped at 100% of UK earnings for the current tax year. If you earn £80,000, you can contribute £80,000 maximum — even if carry forward gives you more headroom. Non-earners can still contribute up to £3,600 gross (£2,880 net) regardless.

3. Choose your vehicle. A SIPP (Self-Invested Personal Pension) is the fastest route for a lump sum contribution. Most providers — AJ Bell, Interactive Investor, Hargreaves Lansdown — can process a contribution within days. If contributing through your employer's scheme, check processing times. Some payroll systems need 2-3 weeks' notice.

4. Fund the contribution. For relief-at-source pensions, you pay 80% and the provider claims 20%. So a £60,000 gross contribution requires £48,000 from you. The remaining £12,000 arrives in your pot within weeks.

5. File your Self Assessment. If you're a higher or additional rate taxpayer, you must claim the extra relief through your Self Assessment return. You can do this for the 2025/26 tax year from April 2026. Don't leave this step — it's where the real savings are for 40% and 45% taxpayers.

For more on choosing the right pension platform, see our pensions hub.

6. Consider salary sacrifice. If your employer offers it, contributing via salary sacrifice before April 5 saves both employee and employer National Insurance. On a £60,000 contribution, salary sacrifice saves roughly £1,200 in employee NI (at 2%) and your employer saves £9,000 (at 15%). Some employers share the NI saving, effectively boosting your contribution further. Check if your workplace scheme supports one-off salary sacrifice arrangements — many do, but processing time varies.

7. Don't forget the pension commencement lump sum. If you're over 55 and plan to access your pension soon, remember that 25% of your pot can be taken tax-free. A £200,000 carry forward contribution creates £50,000 of future tax-free cash. That's not available from an ISA or any other savings vehicle.

ISA season dominates the headlines every March. The £20,000 ISA allowance is useful, but pension contributions offer something ISAs cannot: upfront tax relief.

Consider a higher-rate taxpayer with £48,000 to invest. Put it in an ISA and you invest £48,000. Put it in a pension and you invest £60,000 — the extra £12,000 comes from HMRC immediately, plus you claim another £12,000 on your tax return. That's £24,000 of tax relief versus zero.

Yes, pensions are locked until age 57 (rising from 55 in 2028). Yes, only 25% comes out tax-free. But the upfront boost is so large that pensions beat ISAs for retirement savings even accounting for income tax on withdrawal — unless you're confident you'll be a higher-rate taxpayer in retirement, which is rare.

The smart play? Max your pension carry forward first, then use remaining cash for your ISA allowance. Most people do it backwards.

For a deeper look at how the ISA deadline works, see our ISA deadline strategy guide. See our analysis on pension tax relief year-end checklist for 2025/26.

The annual allowance charge is punitive — you pay tax at your marginal rate on the excess. These are the errors that cause it:

Forgetting employer contributions. Your employer's 5% match on a £80,000 salary is £4,000. If you also contribute £58,000 personally, your total is £62,000 — £2,000 over the allowance. That £2,000 excess is taxed at your marginal rate.

Miscalculating defined benefit accrual. In a DB scheme, it's not your cash contributions that count — it's the increase in your pension value, multiplied by 16, plus the increase in any lump sum. A £3,000/year increase in DB pension uses £48,000 of your annual allowance (£3,000 × 16). If you're also contributing to a SIPP, the combined total can easily exceed £60,000.

Ignoring the tapered allowance. If your adjusted income exceeds £260,000, your allowance reduces by £1 for every £2 over the threshold, down to £10,000. A bonus that pushes you over this line retroactively reduces your allowance for the entire year — and carry forward from tapered years uses the reduced figure, not the standard £60,000.

For a broader view of year-end tax planning, see our tax planning hub.

<p>For related guidance, see our article on <a href="/posts/pension-carry-forward-180000-of-tax-relief-expires-on-5-april-heres-how-to">how to claim carry-forward before the 5 April deadline</a>.</p>