Best Stocks and Shares ISA Provider
Discover top UK Stocks and Shares ISAs with low or no fees, diverse investment options, and ready-made portfolios to help grow your wealth.
Best ISAs
5.0/5
AJ Bell – Low fees from an all-round great investment platform for ISAs
4.9/5 Trustpilot Rating
Excellent range and choice for investors
Capital at risk.
4.5/5
interactive investor – Massive menu of global shares, funds, ETFs and trusts to invest in, with reasonable pricing
SIPP: £100-£3,000 cashback for new and existing customers opening a SIPP until 5 April 2026
Flat fees can be great value for large portfolios
Capital at risk. Terms & fees apply.
What does the ISA millionaire calculator do?
This calculator is designed to give you an idea of how long it could take to become an ISA millionaire using a Stocks and Shares ISA. Please note that it is an illustrative example only. And, it does not take into account fees or market ups and downs.
You can’t do anything about market ups and downs, but fees are in your control and are really important—they hurt your child’s returns. Some platforms have waived all their fees for Junior ISAs, so make sure you check our pick of the best Stocks and Shares here.
If you haven’t opened a Stocks and Shares ISA yet, we have a super simple free guide that will walk you through it step by step.
How many ISA millionaires are there in the UK?
Recent estimates show that there are 5,070 ISA millionaires in the UK, up 220 from the previous year, according to data provided by HMRC from an Invest Engine Freedom of Information Request.
What is a Stocks and Shares?
A Stocks and Shares ISA is a tax-efficient account that allows you to buy, sell and hold investments.
You can invest up to £20,000 each tax year (which runs from April 6 to April 5 the following year).
You must be a UK resident and over the age of 18 to have a Stocks and Shares ISA.
You can see our top picks for Stocks and Shares providers here or read more about Stocks and Shares ISAs in our full guide above.
What can you invest in?
With a Stocks and Shares ISA, you can invest in a range of different assets including:
- Stocks and Shares: give you partial ownership of a company.
- Bonds: a type of loan for governments or companies that they have to pay back.
- Funds: are collective investments that pool your money together with other people and are professionally managed on your behalf.
How do you invest using a Stocks and Shares ISA?
There are two main ways to invest using a Stocks and Shares ISA. The first is a do-it-yourself (DIY) approach.
This involves selecting your own investments and managing your portfolio yourself. It’s a bit more hands-on and could reduce the amount of management fees you pay since you’re in charge of selecting your assets.
The other approach is a “managed” portfolio. This is when a qualified professional makes your investment decisions for you.
It could be worth considering if you’re a total beginner or short on time. It requires less expertise but comes with charges to cover the cost of someone else managing your portfolio.
How to open a Stocks and Shares ISA
You can open a Stocks and Shares ISA using the following steps:
- Choose a provider
Shopping around is key. Check out our best Stocks and Shares ISA guide for our pick of the best Stocks and Shares ISAs available now.
- Apply online
Most providers let you set up an account in minutes. You’ll just need your personal details, National Insurance Number and a debit card to make the first deposit.
- Start investing
You can add up to £20,000 into an ISA each tax year. Setting up a direct debit can help you maximise your allowance.
- Monitor the results
Keep an eye on how your portfolio performs to make sure it’s on track to achieve your financial goals.
Frequently asked questions
Can you still have a Cash ISA?
Yes, you can have both a Stocks and Shares ISA and a Cash ISA.
Can a child have more than one Stocks and Shares ISA?
You can have more than one Stocks and Shares ISA. The tax-free limit will still remain £20,000 which means if you pay into more than one, your allowance will be split between them.
Do you pay tax when you withdraw from a Stocks and Shares ISA?
No, you don’t pay any tax for taking money out of a Stocks and Shares ISA.
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