Pensions guide
Pension vs ISA: how they compare
Capital at risk. The value of investments can fall as well as rise, and you may get back less than you put in. Past performance is not a guide to future returns.
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Pensions and ISAs are the two main tax-efficient ways to save for the long term in the UK. They work in quite different ways, and many people use both. Here’s a side-by-side look at how they compare.
Capital at risk. The value of investments can fall as well as rise, and you may get back less than you put in.
Good to know: This is general information, not personal advice. Pensions are long-term investments.
The value can go down as well as up, so you could get back less than has been paid in. Capital at risk.
For free, impartial guidance, use MoneyHelper. If you’re 50 or over with a defined contribution pension, you can book a free Pension Wise appointment.
At a glance
| Pension | ISA | |
|---|---|---|
| Tax relief on money in | Yes — 20% added, more claimable by higher-rate taxpayers | No |
| Employer contributions | Often, in workplace pensions | No |
| Yearly limit | £60,000 annual allowance | £20,000 ISA allowance |
| When you can access it | Usually from 55 (57 from 6 April 2028) | Any time (Lifetime ISA has rules) |
| Tax on money out | 25% usually tax-free (up to £268,275), rest taxed as income | Tax-free |
| Growth | Free of UK income and capital gains tax | Free of UK income and capital gains tax |
How pensions work
Pensions get tax relief when money goes in. In a relief at source scheme, an £80 payment becomes £100, and higher-rate taxpayers can claim more. In a workplace pension, your employer usually adds money too — at least 3% of qualifying earnings under auto-enrolment.
The trade-off is access. You can’t usually take money out until 55, rising to 57 from 6 April 2028.
When you do, you can usually take up to 25% tax-free, up to £268,275, and the rest is taxed as income. See our guides to pension tax relief and workplace pensions.
How ISAs work
ISAs don’t get tax relief on the way in — you pay in from money you’ve already been taxed on. But interest, dividends and gains inside an ISA are tax-free, and so are withdrawals. You can usually take money out whenever you like, though some accounts have their own access rules.
The maximum you can pay into ISAs is £20,000 for the 2026 to 2027 tax year, shared across Cash ISAs, Stocks and Shares ISAs, Innovative Finance ISAs and Lifetime ISAs. Our ISA hub and ISA allowance rules explain the details.
Where the Lifetime ISA fits
The Lifetime ISA sits between the two. You can pay in up to £4,000 a year until you’re 50, and you must open it and make your first payment before you turn 40.
The government adds a 25% bonus, up to £1,000 a year. The £4,000 counts towards your £20,000 ISA allowance.
You can use it to buy a first home or for later life. Withdrawals for other reasons can face a government withdrawal charge, so you could get back less than you paid in. Read our Lifetime ISA rules before choosing one for retirement — and note that, for employees, giving up employer pension contributions to pay into a Lifetime ISA instead can mean missing out.
Thinking it through
There isn’t one right answer, and the choice depends on your circumstances. Questions people often consider include:
- Would you lose employer money? Employer contributions are only available in a workplace pension.
- When might you need the money? Pensions are locked until minimum pension age; ISAs can usually be accessed sooner.
- What tax do you pay now, and expect to pay later? Relief on the way in matters more if you pay a higher rate now than you expect to in retirement.
- Do you have an emergency fund? Many people keep easy-access cash before locking money away.
Many people use both: a pension for retirement, and an ISA for goals that come sooner or as a flexible top-up. For free, impartial help weighing up your options, MoneyHelper is a good starting point.
The catch
A note on investment risk
Most pensions and Stocks and Shares ISAs are invested, so the value can go down as well as up. Cash ISAs don’t carry investment risk, but inflation can reduce what your money buys over time. Our investments hub explains the basics, and our pension calculator and ISA savings calculator let you try your own figures.
FAQ
Is a pension or an ISA better for retirement?
It depends on your circumstances. Pensions get tax relief and often employer contributions but are locked until 55 (57 from 2028). ISAs are more flexible but don’t get tax relief.
Can I have both a pension and an ISA?
Yes. Many people pay into both. Pension and ISA allowances are separate.
Are ISA withdrawals taxed?
No. Withdrawals from ISAs are tax-free, although some Lifetime ISA withdrawals can face a government withdrawal charge — see our Lifetime ISA rules guide.
Are pension withdrawals taxed?
See How pensions work above.
What is the ISA allowance?
See How ISAs work above.
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Sources
Figures checked on 3 October 2026. Rules and rates change, so check the latest on GOV.UK.