We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

Here’s how the UK’s ISA millionaires invest their money

Record amounts of cash are going into ISAs these days, but where do the UK’s 1,000 or so ISA millionaires put their money?

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

ISAs are great things, they really are. Invest up to £20,000 per year in a ISA, and do not pay a penny in income tax on the profits it makes for the rest of your life!

And we UK investors have taken them to our hearts, investing a total of £69.3bn in 2017-18. But that number bears closer examination, as it hides some unfortunate trends.

XXX

While the total amount invested in ISAs has been growing, the actual number of accounts has been steadily falling since a peak in 2010-11. It seems that wealthier investors are continuing to raise their ISA investments every year, while the less well off are turning away.

Cash ISA

Some of that will be due to the UK’s declining economic health in recent years, with folks having less spare cash. But I put at least part of the blame on the Cash ISA, and the disillusionment I think a lot of people have felt — I say ISAs are great, but only Stocks & Shares ISAs.

The problem with a Cash ISA is that you’ll struggle to get anything other than a pitiful annual interest rate, with the best easy access rates currently only reaching around 1.5%. With inflation running at 2%, you’re guaranteed to lose money in real terms — and what is the point of saving tax on that?

But unfortunately, a full 72% of ISAs opened in the 2017-18 year were Cash ISAs, alongside 26% Stocks & Shares ISAs (with the rest being mostly Lifetime ISAs). Looking at the split by value, 57% of the total cash invested went into Cash ISAs, with 41% going into Stocks & Shares. So while fewer people go for Stocks & Shares ISAs, those who do go for them invest significantly more money.

Millionaires

How many ISA millionaires are there in the UK? Hargreaves Lansdown had 113 ISA customers with £1m or more in their accounts at the end of February, while Interactive Investor had 88. Estimates suggest the UK has around 1,000 ISA millionaires (who, remember, aren’t paying any tax on their profits).

Where do the millionaires invest their money? It’s not in Cash ISAs for sure, it’s mostly in Stocks & Shares ISAs. Britain’s ISA millionaires hold very little in cash at around 7%, have around 12% in investment trusts, and a full 59% of their funds are invested in individual shares.

You too

Wealthier folk seem to better understand the benefits of investing in the stock market, and with the poor state of financial education in the UK that’s perhaps not surprising. But it really shouldn’t be that way. The one thing I hear most when I talk to people about investing in shares is that its horribly risky, and it’s a world controlled by insiders in the City who’ll have your shirt if you’re not careful.

But it really isn’t like that at all, and you don’t need to be a financial genius to open a Stocks & Shares ISA and invest modest sums of money using a relatively simple strategy — and join the ranks of those earning tax-free ISA profits.

Alan Oscroft has no position in any of the shares mentioned. The Motley Fool UK has recommended Hargreaves Lansdown. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »