Comparison · Savings & Pensions · 2026/27
ISA vs Pension Annual Allowance 2026/27: £20k vs £60k
The UK offers two powerful tax-efficient savings wrappers: the Individual Savings Account (ISA, capped at £20,000 per year) and the pension annual allowance (£60,000 per year). Both shelter your money from tax — but in very different ways, at different stages of your life, and with very different rules on access, inheritance and flexibility.
TL;DR — 30 Second Answer
- • ISA: £20k/year, post-tax money in, tax-free growth and withdrawals, access any time
- • Pension: £60k/year, pre-tax money in (with tax relief), 25% tax-free on exit, locked until 57
- • Basic rate taxpayer: ISA and pension roughly equal after relief
- • Higher rate taxpayer: Pension is usually better — 40% relief on entry
- • Best strategy: Max both if possible; pension first if higher rate, ISA first if basic rate and need flexibility
At a Glance: Key Facts for 2026/27
| Feature | ISA | Pension |
|---|---|---|
| Annual allowance (2026/27) | £20,000 | £60,000 (or 100% of earnings) |
| Money going in | Post-tax (no relief) | Pre-tax (with tax relief at marginal rate) |
| Growth (dividends, interest, gains) | Tax-free | Tax-free |
| Withdrawals | 100% tax-free | 25% tax-free (PCLS); 75% taxable income |
| Minimum access age | Any age | 55 (rising to 57 in April 2028) |
| Carry forward unused allowance | No — use it or lose it | Yes — up to 3 previous years |
| Inheritance tax (IHT) | Inside estate (subject to IHT) | Outside estate (until April 2027 changes) |
| Spousal transfer on death | APS rule: spouse inherits ISA allowance | Can pass to any nominated beneficiary |
| State benefits impact | ISA assets count as savings (means-tested) | Pension pot generally excluded (until age 75) |
Tax Relief: The Critical Difference
The most important difference between the two wrappers is when the tax relief happens:
You invest after paying income tax. The £20,000 limit is in post-tax pounds. No further tax on growth or withdrawals. Effectively: tax paid once (on earnings), then sheltered forever.
You invest before paying income tax (via relief at source or salary sacrifice). The £60,000 limit is in pre-tax pounds. Tax is deferred until withdrawal — then 25% comes out tax-free, 75% is taxable.
For a higher rate (40%) taxpayer: a £6,000 pension contribution only costs £3,600 net after relief (40% relief claimed). The same £3,600 invested in an ISA remains £3,600 — no tax boost. This is why pensions are highly efficient for higher rate taxpayers.
Scenario 1: Basic Rate Taxpayer (£35,000 salary)
A basic rate taxpayer saves £5,000 per year. How do ISA and pension compare over 30 years? (Assuming 5% annual growth, basic rate remains constant.)
| Metric | ISA | Pension (basic rate) |
|---|---|---|
| Net cost per year | £5,000 (post-tax) | £4,000 (after 20% relief) |
| Gross contribution per year | £5,000 | £5,000 |
| Pot after 30 years (5% growth) | ~£332,000 | ~£332,000 |
| Tax-free withdrawal | All £332,000 | £83,000 (25% PCLS) |
| Taxable withdrawal | £0 | £249,000 (taxed as income) |
| Net if basic rate in retirement | £332,000 | ~£282,000 (after 20% income tax on 75%) |
| Verdict | Better net outcome | Lower net (paid same tax twice at 20%) |
Simplified illustration. Assumes pension income does not exceed personal allowance at retirement; actual result depends on total retirement income and marginal rate when drawing pension. Employer pension contributions (free money) can shift this outcome significantly in pensions' favour.
Scenario 2: Higher Rate Taxpayer (£75,000 salary)
A higher rate taxpayer contributes £10,000 per year. The 40% relief makes the pension significantly more attractive.
| Metric | ISA | Pension (higher rate) |
|---|---|---|
| Net cost per year | £10,000 | £6,000 (after 40% relief) |
| Gross contribution per year | £10,000 | £10,000 |
| Pot after 25 years (5% growth) | ~£477,000 | ~£477,000 |
| Tax-free portion | All £477,000 | ~£119,000 (25% PCLS) |
| Net after tax (if basic rate in retirement) | £477,000 | ~£405,000 |
| Cost saving vs ISA route | — | £100,000 less invested for same pot |
| Verdict | Same pot, higher cost | Better value — relief on entry more than offsets exit tax |
Key insight: the higher rate taxpayer puts in 40% less cash for the same gross pension contribution. Even after paying 20% income tax on withdrawals, the pension route delivers a better net outcome.
Scenario 3: Near Retirement (Age 52, 5 Years to Access)
Someone aged 52 saving £20,000 per year — comparing using both wrappers in the final five years before retirement (pension access at 57 from 2028).
- • 5 years × £20,000 = £100,000 contributed
- • Accessible at any age — no lock-in risk
- • If needed before 57, fully available
- • 5-year pot at 4% growth ≈ £108,000
- • All withdrawals tax-free in retirement
- • Cost: £12,000/year net (40% relief)
- • 5 years × £20,000 gross = £100,000 in pension
- • Locked until age 57 (April 2028 change)
- • 5-year pot at 4% growth ≈ £108,000
- • 25% (£27,000) tax-free; 75% (£81,000) taxable
For a near-retirement saver, the pension is cheaper (40% relief saves real cash) but the ISA offers more flexibility if circumstances change. A combined approach — maxing ISA for accessible reserves and pension for long-term retirement income — is typically most prudent.
The Pension Annual Allowance — Key Rules
The £60,000 pension annual allowance has important nuances:
| Rule | Detail |
|---|---|
| Standard annual allowance | £60,000 (2023/24 onwards) |
| Earnings cap | Contributions eligible for relief capped at 100% of UK earnings (salary; not dividends) |
| Tapered annual allowance (TAA) | Applies when threshold income >£200,000 AND adjusted income >£260,000; reduces by £1 per £2 above £260k, min £10,000 |
| Money Purchase Annual Allowance (MPAA) | £10,000 once flexibly accessed; prevents recycling pension withdrawals back in |
| Carry forward | Unused allowance from the 3 previous tax years can be carried forward (must have been a scheme member) |
| Employer contributions | Count towards the £60,000 limit — relevant for high-earners receiving large employer contributions |
| Annual allowance charge | Tax at marginal rate on contributions exceeding the allowance; reported via Self Assessment |
The ISA Annual Allowance — Key Rules
The £20,000 ISA allowance is simpler but has its own rules:
| Rule | Detail |
|---|---|
| Annual limit | £20,000 per person per tax year (frozen since 2017/18) |
| ISA types | Cash ISA, Stocks & Shares ISA, Innovative Finance ISA, Lifetime ISA (max £4,000 of the £20k) |
| Eligible savers | UK residents aged 18+; Junior ISA (£9,000/year) for under-18s |
| Earnings requirement | None — can use ISA allowance even with no income |
| Flexibility | Flexible ISAs allow withdrawal and re-contribution in the same year without losing allowance |
| Carry forward | Not available — unused allowance is permanently lost at 5 April |
| IHT treatment | Forms part of estate; APS rule allows spouse to inherit ISA tax wrapper (not the assets themselves) |
Inheritance Tax — A Key Divergence
One of the most significant differences between ISA and pension is how each is treated for Inheritance Tax purposes.
- • All ISA assets count in your estate for IHT
- • 40% IHT applies on value above nil-rate band (£325k + £175k RNRB if applicable)
- • APS: surviving spouse inherits the ISA wrapper (not IHT-free)
- • Business property relief applies to qualifying AIM ISA shares
- • Pension pots (defined contribution) currently outside your estate for IHT
- • Can pass any nominated beneficiary — not just spouse
- • Significant IHT planning tool for large pension pots
- • From April 2027: pension assets brought into estate (budget 2024 measure)
For those with estates approaching or exceeding the IHT nil-rate band, spending ISA assets first in retirement and leaving the pension intact has been a valuable strategy. After April 2027, this advantage reduces — though the pension may still sit outside the estate if the budget proposals are amended before implementation.
Pension Carry Forward — A Unique Advantage
Unlike ISA, unused pension annual allowance can be carried forward from the three preceding tax years. In 2026/27, you can potentially contribute up to:
- £60,000 (2026/27 current year)
- + £60,000 (2025/26 unused)
- + £60,000 (2024/25 unused)
- + £60,000 (2023/24 unused)
- = up to £240,000 in a single year
Subject to: having earnings of at least the total contribution amount; having been a member of a registered pension scheme in the carry-forward years; and having not triggered the MPAA. This makes pensions highly attractive for those who receive a large bonus, inheritance, or business sale proceeds.
ISA vs Pension — Pros & Cons
- • Medium-term savings (house deposit, career break)
- • Those who may need access before age 57
- • Basic rate taxpayers with no employer pension match
- • Savers wanting clean, simple tax-free income
- • Self-employed with variable income
- • Higher and additional rate taxpayers (40%/45% relief)
- • Those with employer pension contributions (free money)
- • IHT planning (estate too large for nil-rate bands)
- • Salary sacrifice arrangements (saves NI too)
- • Large lump-sum contributions via carry forward
The Optimal Strategy: Using Both
For most UK savers, using both ISA and pension simultaneously is the ideal approach:
- Always take any employer pension match first. This is an immediate 100% return on your money — better than any investment.
- Higher rate taxpayers: Max pension contributions within the £60,000 annual allowance (or to the point where your income drops to the basic rate band, unless you have specific reasons to contribute more).
- Basic rate taxpayers: Consider whether ISA or pension is more efficient — the answer depends on expected marginal rate in retirement. If you expect to remain a basic rate taxpayer in retirement, ISA avoids the pension exit tax on the 75% taxable element.
- Flexibility reserve: Even pension-focused savers should maintain some ISA savings for liquidity — emergencies, bridging gaps, or spending in the years before pension access age.
- Near retirement: Consider drawing ISA first to allow pension to grow tax-free and maximise IHT planning (subject to 2027 changes).