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.

Forget a Cash ISA, here’s why I’d use a Stocks and shares ISA to aim for a million

A maxed-out Cash ISA could be worth a quarter of a million pounds now. Here’s how a Stocks and Shares ISA could do a lot better.

Happy male couple looking at a laptop screen together

Image source: Getty Images

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.

Why should we take risks with a Stocks and Shares ISA, when Cash ISAs now pay good interest rates?

I think that’s a very good question. I mean, a quick search for top Cash ISA rates quickly finds some offering more than 5%. That’s for a fixed term, but we’re in it for the long term, right?

XXX

Still, even if I want easy access to my cash, I could bag around 5%. Unlike any stocks and shares returns, that’s guaranteed too.

Tempting

Yes, I can see why folks might be tempted to put their savings into a Cash ISA in these troubled times. And the number of people taking them up Cash continues to outstrip Stocks and Shares ISA take-ups.

According to the latest research by InvestEngine, anyone who maxed out their ISA allowance in a Cash ISA every year could have done quite well.

Had they done it since ISAs were introduced, they could have £274,650 in their accounts now.

But I’m having none of it, and I’ll tell you why.

Where the millionaires are

The thing is, there are around 4,000 ISA millionaires in the UK. And it doesn’t sound like they made their millions using Cash ISAs, does it?

These millionaires mostly went for the same approach of using their full allowance every year, but in a Stocks and Shares ISA. And they did that through all the same ups and downs as the Cash ISA investors.

That includes the banking crisis, the Brexit shock, Covid…

How much they have

Yes, a Cash ISA would have been safer, with its guaranteed interest. But taking the risk has just about quadrupled the returns enjoyed by millionaire Stocks and Shares ISA investors.

Well, actually, that’s going on the smallest sum needed to qualify for millionaire status. The most successful of them have way more than that.

In fact, the top 50 have built up an average pot of a big fat £8.5m.

Quarter of a million from a Cash ISA? Pah!

How might we join them?

So what do we do to join the UK’s ISA millionaires? Well, we have to understand that taking the extra risk doesn’t in any way guarantee better returns.

I don’t doubt that some folk have gone for more ambitious Stocks and Shares ISA strategies, and have crashed and burned.

So the key, for me, is to reduce risk via diversification.

Lower the risk

One way to do that is to use investment trusts, which spread the cash across a range of stocks within their stated strategy.

My favourite trusts are the ones that go for UK equity income, buying top-drawer FTSE 100 stocks.

And, as it happens, ISA millionaires put more of their cash into investment trusts than the average ISA punter. It’s up around 40%, compared to an average of 25%.

Max out, long term

Other than that, it’s all about using as much of our allowance as we can, and buying stocks we want to hold for at least a couple of decades.

Will this approach get me up among the ISA millionaires? I don’t know, but I reckon it gives me a better chance than a Cash ISA.

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

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 »