The UK and the US both offer tax-advantaged accounts to encourage people to save for retirement. In the US, one of the most popular is the Roth IRA (Individual Retirement Account), where you invest money you’ve already paid tax on and the growth is tax-free.
For 2026, Americans can put up to $7,500 a year into a Roth IRA ($8,600 if they are 50 or older). Contributions can be taken out at any time, but earnings are only tax-free after age 59½ and once the account has been open for at least five years.
If that sounds like a good deal, the UK has something similar, and in some ways better.
What is the UK equivalent of the Roth IRA?
The closest UK equivalent of the Roth IRA is the Stocks and Shares ISA. Like a Roth IRA, you pay in money you’ve already paid tax on, and your investments grow free of UK income tax and Capital Gains Tax. Withdrawals are tax-free too.
The ISA is also more flexible. You can take out your contributions and your gains at any time, at any age, with no penalty. The allowance is larger as well: £20,000 per tax year, compared with $7,500 for a Roth IRA.
If you’re saving specifically for retirement, two other UK accounts are worth knowing:
- Lifetime ISA: you can pay in up to £4,000 a year between ages 18 and 39 and get a 25% government bonus. Withdrawals are tax-free from age 60 or for a first home. Other withdrawals face a 25% penalty, which means you lose more than the bonus. This is arguably the closest match to the Roth IRA’s retirement focus.
- SIPP (Self-Invested Personal Pension): contributions get tax relief, so £80 becomes £100 for a basic-rate taxpayer, but withdrawals are taxed as income (apart from 25% tax-free). This works more like a US Traditional IRA than a Roth IRA.
| Feature | Roth IRA (US) | Stocks and Shares ISA (UK) |
| Annual limit | $7,500 ($8,600 if 50+) in 2026 | £20,000 across all ISAs |
| Tax on contributions | Paid from taxed income | Paid from taxed income |
| Tax on growth | None | None |
| Withdrawals of gains | Tax-free after 59½ and 5 years | Tax-free at any time |
| Income limit | Yes (phases out from $153,000 for single filers) | No |
Sources: Kiplinger and GOV.UK, October 2026.
How does an ISA work?
Each tax year, from 6 April to 5 April, you can put up to £20,000 into ISAs. Any allowance you don’t use is lost; it doesn’t roll over. There are four types of adult ISA:
- Cash ISA: a savings account with tax-free interest. From 6 April 2027, people under 65 will only be able to put up to £12,000 a year into Cash ISAs, within the £20,000 total.
- Stocks and Shares ISA: a tax-free investment account for shares, funds, ETFs, investment trusts and bonds.
- Lifetime ISA: up to £4,000 a year, with a 25% government bonus, for a first home or retirement.
- Innovative Finance ISA: for peer-to-peer loans and some other alternative investments.
You can split your allowance. For example, you could put £15,000 into a Stocks and Shares ISA, £4,000 into a Lifetime ISA and £1,000 into a Cash ISA. Since April 2024, you can also pay into more than one ISA of the same type in the same tax year, as long as you stay within £20,000 in total.
For children, a Junior ISA has a separate £9,000 annual allowance.
Tax treatment depends on individual circumstances and may change in the future.
Best Stocks and Shares ISA providers
These are popular UK platforms for a Stocks and Shares ISA, with their main costs:
- Hargreaves Lansdown: the UK’s largest platform, with strong research. Since 1 March 2026, it charges 0.35% a year on funds, with account charges on shares and ETFs capped at £150 a year, and £6.95 per online share trade.
- Bestinvest: 0.4% a year on funds and UK shares and 0.2% on ready-made portfolios, with free fund dealing and £4.95 per UK share trade.
- Interactive Brokers: no account or custody fee, UK shares from £3 per trade and US shares from $0.005 per share. The ISA has a £3 minimum monthly activity fee.
- InvestEngine: no platform fee on its DIY ISA, with more than 870 ETFs and a £100 minimum.
- Moneyfarm: managed portfolios of ETFs, with fees of 0.70% a year at £20,000 plus fund costs, and a £500 minimum.
For more options, see our guide to Hargreaves Lansdown alternatives.
When investing, your capital is at risk and you may get back less than you invest.
How do you open a Stocks and Shares ISA?
- Check you’re eligible: you need to be 18 or over and a UK resident.
- Build an emergency fund first: keep a few months of expenses in cash. See our guide to the emergency fund.
- Choose a platform: compare account fees and dealing fees. On a £20,000 ISA, a 0.35% fee costs £70 a year, while a platform with no account fee costs nothing beyond dealing and fund charges.
- Decide your strategy: set your goal, time horizon and how much risk you can take. A low-cost global index fund or ETF is a simple starting point for many investors.
- Invest: you can invest a lump sum or set up a monthly Direct Debit, which most platforms let you do for free.
Roth IRA UK equivalent: final thoughts
There is no exact UK copy of the Roth IRA, but the Stocks and Shares ISA does the same job with more flexibility: a £20,000 annual allowance, tax-free growth and tax-free withdrawals at any age. If you’re saving only for retirement and are under 40, a Lifetime ISA adds a 25% bonus on up to £4,000 a year, and a SIPP gives tax relief on the way in.
FAQs
Can UK residents open a Roth IRA?
In general, no. A Roth IRA is a US account for people with US taxable earned income. UK residents who are US citizens should take specialist advice, because the UK and US tax rules interact in complex ways.
Should I invest with a Stocks and Shares ISA?
Stocks and Shares ISAs suit goals at least five years away. Investments can fall in value, so give your money time to recover from market falls.
Can I open a Stocks and Shares ISA for my children?
Yes. A Junior ISA has a £9,000 annual allowance, and the money belongs to the child at 18.
Is a Lifetime ISA better than a Stocks and Shares ISA for retirement?
If you’re 18 to 39 and won’t need the money before 60, the Lifetime ISA’s 25% bonus is hard to beat on the first £4,000 a year. But early withdrawals cost 25%, so the Stocks and Shares ISA is more flexible.