ISA vs Pension: Which is Better for You?

The short answer: Neither wins every time. A pension adds tax relief of 20% or more when you pay in, but locks the money away until 55 (57 from April 2028). An ISA gets no relief going in, but comes out tax-free whenever you like. In 2026/27 you can put £20,000 into ISAs and up to £60,000 into pensions.

What's the difference between an ISA and a pension?

The big difference is when you get the tax break. With a pension, you save tax when you pay in. With an ISA, you save tax when you take money out.

An ISA (Individual Savings Account) is a tax-free home for your savings or investments. You don't pay tax on interest, income or gains inside it. You can take money out at any time without losing any tax benefits.

A pension is a long-term pot for later life. When you pay in, the government adds tax relief, which is the Income Tax you'd normally pay on that money. In return, you usually can't touch it until 55, and most of what you take out later is taxed as income.

Capital at risk. The value of your pension can go down as well as up, and you may get back less than you pay in.

Tax treatment depends on the individual circumstances of each client and may be subject to change in future.

The table assumes standard allowances, tax rates for England, Wales and Northern Ireland, and no protected pension age.

How does tax relief on a pension compare with an ISA?

A pension gets an upfront top-up and an ISA doesn't. That's why pensions often come out ahead, if you don't need the money early.

If you pay into a personal pension or SIPP, your provider claims 20% tax relief from the government and adds it to your pot. So a £100 payment costs you £80. There's more on how pension tax relief works in our simple guide.

If you pay a higher rate of tax, you can claim more back:

• 40% taxpayer: you can claim an extra 20%, so £100 in your pension costs you £60.

• 45% taxpayer: you can claim an extra 25% on income taxed at 45%, so £100 costs you £55.

• Non-taxpayer: you still get 20% added on up to £2,880 a year if you have no earnings, which becomes £3,600 in your pot.

You claim higher-rate relief through Self Assessment or HMRC, and can go back 3 tax years. The 2026/27 Income Tax bands are 20% up to £50,270, 40% up to £125,140 and 45% above that.

An ISA works the other way round. The money you put in has already been taxed. But you pay no Income Tax or Capital Gains Tax on what it earns, and nothing when you take it out.

Example: £1,000 into a pension vs an ISA

Let's say you're a basic-rate taxpayer with £800 of take-home pay to save. These are made-up round numbers, with no growth or charges, so you see the tax effect alone.

If you pay the same tax rate now and in retirement, the pension leaves you £50 better off per £800 saved. If you pay higher rate now and basic rate later, the gap grows, because £1,000 in your pension only cost you £600. But if you'll pay more tax in retirement, or need the money before 55, the ISA can win.

Can I pay into an ISA and a pension in the same tax year?

Yes. The two limits are separate, so using one doesn't eat into the other.

• ISAs: you can save up to £20,000 in the 2026/27 tax year, in one account or split across several. The tax year runs from 6 April to 5 April.

• Lifetime ISA: up to £4,000 a year, which counts toward your £20,000.

• Pensions: the annual allowance is £60,000 across all your pensions, including anything your employer pays in. You only get tax relief on your own payments up to 100% of your earnings.

Unused pension allowance from the previous 3 tax years can sometimes be carried forward. That's handy if your income jumps around. Here's how lump-sum contributions and carry forward work if you're self-employed.

Did the Budget change the ISA rules?

Yes, in savers' favour. In the Budget on 28 October 2026, the government said it will keep the cash ISA limit at £20,000 for all savers over 18 from April 2027. If you'd been planning a mad dash into cash ISAs before April, you can relax.

That reverses a plan from the year before. HMRC had set out a cut to £12,000 a year in cash ISAs for under-65s from 6 April 2027. It came with rules to stop people getting round it, including limits on moving money into cash ISAs and a 22% charge on cash interest in a stocks and shares ISA.

With the cut gone, Which? reports that the 22% charge won't go ahead either, and you can keep moving money between stocks and shares ISAs and cash ISAs. The official ISA guidance still says you can transfer to a different type of ISA at any time.

So, for you:

1. You can put your whole £20,000 into cash ISAs this tax year and next, whatever your age.

2. The overall ISA limit is £20,000 in 2027/28 too, and MoneyHelper says it stays at £20,000 until 2031.

3. The government will explore a new ISA incentive for first-time stocks and shares investors. There are no details yet.

With tax on savings going up, is an ISA or a pension better?

It makes ISAs more useful for cash, but changes little between an ISA and a pension. Growth inside either is still tax-free.

From 6 April 2027, Income Tax on savings interest goes up by 2 percentage points. The savings rates will be 24% for basic-rate taxpayers, 44% for higher rate and 49% for additional rate, across the UK.

Allowances on savings outside an ISA don't change. Your Personal Savings Allowance is £1,000 of interest if you're a basic-rate taxpayer and £500 at higher rate. The Budget document says a basic-rate taxpayer would need over £25,000 in savings, on top of any ISAs, before paying tax.

Example: £20,000 in an easy-access account. These are made-up figures. Say it earns 4% interest, so £800 a year, and you're a higher-rate taxpayer.

A basic-rate taxpayer with the same account pays nothing in either year, because £800 is under their £1,000 allowance.

So a cash ISA is a natural home for a cash buffer. For money you won't need before 55, the choice still comes down to tax relief, access and employer money.

When can I get my money out of an ISA or a pension?

You can take money out of a normal ISA whenever you want. A pension is locked until at least 55, rising to 57 from 6 April 2028.

The minimum pension age goes up to 57 on 6 April 2028. Be wary of anyone offering to unlock your pension before then: an unauthorised payment can be taxed at up to 55%.

When you do take money from a pension, you can usually take 25% tax-free, up to a total of £268,275. The rest is taxed as income.

So which is better at 55? Once you can reach your pension, the lock-in matters less. But ISA withdrawals aren't taxable income, which can help keep pension withdrawals in a lower tax band. Having both lets you choose each year.

Before 55, an ISA is the one you can reach. Because pension money is locked away, MoneyHelper says it's a good idea to have other savings you can get at too.

What is a Lifetime ISA, and what's the catch?

A Lifetime ISA (LISA) sits between an ISA and a pension. You get a 25% bonus from the government, but you can only take money out without a charge for a first home, from 60, or if you're terminally ill.

The rules from GOV.UK:

• You must be 18 or over and under 40 to open one.

• You can pay in up to £4,000 a year until you're 50.

• The government adds 25%, up to £1,000 a year.

• For a first home, you must buy at least 12 months after your first payment. Homes costing £450,000 or less have no charge.

• For anything else, there's a 25% withdrawal charge.

That charge is the catch, because it takes back more than the bonus. In the government's own example, £800 plus a £200 bonus makes £1,000. Take it all out early and the £250 charge leaves £750.

The Budget softened one rule. Since 29 October 2026, buying a first home above £450,000 costs a 20% charge instead of 25%. That's roughly the bonus back, so you keep what you paid in.

A new First Time Buyer ISA will replace the LISA for new savers from April 2029. If you already have a LISA, you can keep paying in under the current rules.

What about workplace pensions and employer contributions?

If you're employed, your workplace pension usually comes with money from your employer. An ISA never does.

Your employer must enrol you if you're aged 22 or over and earn at least £10,000 a year, up to State Pension age. The legal minimum is 8% in total, with at least 3% from your employer.

Leaving the scheme for an ISA means giving up that employer money. With salary sacrifice, from April 2029, only the first £2,000 a year sacrificed will be free of National Insurance.

You can also have a SIPP (self-invested personal pension) alongside your workplace scheme. If you've built up a few old pots, see combining old workplace pensions.

How are ISAs and pensions treated for inheritance tax?

Today, most pensions sit outside your estate for inheritance tax and ISAs don't. For deaths from 6 April 2027, most unused pension money comes in too.

• ISAs: your ISA investments form part of your estate for inheritance tax. A surviving spouse or civil partner can inherit your ISA allowance on top of their own.

• Pensions from 6 April 2027: most unused pension funds and death benefits will count as part of your estate. Death in service benefits stay out. Money left to a spouse, civil partner or charity stays exempt.

Inheritance tax is usually 40% on anything above £325,000. That threshold can rise to £500,000 if you leave your home to your children or grandchildren.

How might different people think about the mix?

We can't say what's right for you, but here's how the rules tend to play out.

• Employed, basic-rate taxpayer: a workplace pension brings employer money and 20% relief. An ISA holds money you might need before 55.

• Higher or additional-rate taxpayer: relief at 40% or 45% is worth more going in, and cash outside an ISA will be taxed at 44% or 49% from April 2027.

• Saving for a first home, aged 18 to 39: a Lifetime ISA's 25% bonus is aimed at you, as long as you can live with the withdrawal rules.

• Self-employed: there's no employer paying in, but a personal pension still gets tax relief. With uneven income, it helps to make room for both a pension and a cash buffer. Our guide to the best pension options for self-employed people goes further.

• Saving for a child: we compare a Junior ISA, your own ISA and a savings account.

To see how a pension might grow when your income changes, try the flexible pension calculator.

If you decide a SIPP is the right home for your pension, Chest is a self-invested personal pension (SIPP). It's invested in L&G funds, with easy-to-understand fund options and transparent fees with no hidden charges. Chest is live in early access, and you can get the app today.

What can I do now?

1. Add up what you've paid into ISAs and pensions this tax year, so you know how much allowance is left before 5 April 2027.

2. If you have cash savings outside an ISA, check how much interest they earn against your Personal Savings Allowance before the April 2027 rise.

3. If you pay 40% or 45% tax, check you've claimed your extra pension tax relief.

4. Check who you've nominated to get your pension with each provider, especially with the April 2027 inheritance tax change coming.

5. For free, impartial guidance, try MoneyHelper. If you're over 50, Pension Wise offers a free appointment.

Still got questions?

Is the cash ISA limit still £20,000? Yes. The planned cut to £12,000 for under-65s was dropped in the 28 October 2026 Budget, so everyone over 18 can keep putting up to £20,000 a year into cash ISAs.

Can I still move money from a stocks and shares ISA to a cash ISA? Yes. Use your new provider's ISA transfer form rather than taking the money out, or you can't put that part of your allowance back.

Does my partner's pension or ISA count toward my allowance? No. You can't hold an ISA with someone else, so you each have your own £20,000 ISA allowance. Your pension annual allowance is yours too.