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

Don’t let the stock market crash go to waste. Take a few tips from the UK’s ISA millionaires, and boost your chances of joining them.

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.

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.

How many ISA millionaires are there are in the UK? Estimates put the number at around 1,000, or even more. ISAs themselves were only introduced in 1999, but they replaced earlier PEPs, which had been around since 1987.

So if you started with a PEP in 1987, then transferred it to an ISA in 1999, you’ll have had 33 years of tax-protected investing. And I reckon building up a pot of a million in 33 years is pretty good going. If you’d told me 33 years ago that I could become a millionaire by today, I wouldn’t have believed it. In fact, I didn’t, and I’m not. Don’t make the same mistake.

Successful ISA millionaires do what we’re always banging on about here at The Motley Fool. They invest for the long term. Forget trying to time the market and catch the big upswings (while avoiding the downswings), as it just can’t be done with any reliability. No, get as much money in as you can, as early as you can, and leave it there for as long as you can. Let the magic of compounding work its spell, and you really could join the ranks of ISA millionaires.

ISA millionaires buy shares

But where do ISA millionaire put their investment money? Well, first up, it’s not into Cash ISAs. That’s not surprising. A Cash ISA, which will typically pay interest of a little over 1% per year, is not the stuff of which millions are made. ISA millionaires typically have maybe a few percent of their money in cash, at most. And that’s likely to be an emergency cash stash for any short-term needs, and very likely some dividend cash that has not yet been reinvested.

Yes, dividend cash, because shares paying steady income figure highly in ISA millionaires’ portfolios. Some will look for long-term share price growth too. But in every interview I’ve ever read with an ISA millionaire, dividend stocks figure highly in their plans.

Stocks and shares generally make up the bulk of ISA millionaires’ asset allocations, with more than half of their investments going into individual shares. Most of the rest goes into pooled investments, and this is where there’s another interesting distinction.

Keep the fees down

Many people investing in managed funds will go for unit trusts. But those are run by fund managers with the aim of generating profits for themselves. Now, our canny ISA millionaires don’t much like the idea of paying fees for someone else’s benefit. So they overwhelmingly plump for investment trusts rather than unit trusts. When you buy shares in an investment trust, you become a part owner of the company. Investment trust managers are working to maximise your profits as a shareholder, rather than their own. And that eliminates a key conflict of interest.

So, buy shares paying good dividends, pay minimum charges, and leave your money invested for decades. Those are the secrets of ISA millionaires – and they’re not very secret at all, really. Oh, and starting during the stock market crash could give you an extra boost.

Views expressed 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

Investing Articles

Will the S&P 500 crash in 2026?

The S&P 500 delivered impressive gains in 2025, but valuations are now running high. Are US stocks stretched to breaking…

Read more »

Teenage boy is walking back from the shop with his grandparent. He is carrying the shopping bag and they are linking arms.
Investing Articles

How much do you need in a SIPP to generate a brilliant second income of £2,000 a month?

Harvey Jones crunches the numbers to show how investors can generate a high and rising passive income from a portfolio…

Read more »

Investing Articles

Will Lloyds shares rise 76% again in 2026?

What needs to go right for Lloyds shares to post another 76% rise? Our Foolish author dives into what might…

Read more »

Investing Articles

How much passive income will I get from investing £10,000 in an ISA for 10 years?

Harvey Jones shows how he plans to boost the amount of passive income he gets when he retires, from FTSE…

Read more »

Investing Articles

Down 34% in 2025 — but could this be one of the UK’s top growth stocks for 2026?

With clarity over research funding on the horizon, could Judges Scientific be one of the UK’s best growth stocks to…

Read more »

piggy bank, searching with binoculars
Investing Articles

Can the rampant Barclays share price beat Lloyds in 2026?

Harvey Jones says the Barclays share price was neck and neck with Lloyds over the last year, and checks out…

Read more »

Investing Articles

Here’s how Rolls-Royce shares could hit £25 in 2026

If Rolls-Royce shares continue their recent performance, then £25 might be on the cards for 2026. Let's take a look…

Read more »

Departure & Arrival sign, representing selling and buying in a portfolio
Investing Articles

Prediction: in 2026 the red-hot Rolls-Royce share price could turn £10,000 into…

Harvey Jones can't believe how rapidlly the Rolls-Royce share price has climbed. Now he looks at the FTSE 100 growth…

Read more »