I’m aiming to become one of the UK’s 4,000+ Stocks & Shares ISA millionaires! Here’s how

Investing regularly in a Stocks and Shares ISA can help individuals build a substantial retirement fund. Here’s how I’m using mine to build wealth.

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.

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper

Image source: Getty Images

We here at The Motley Fool are huge believers in the the ability of UK shares to create long-term wealth. Putting your money to work in a tax-efficient Stocks and Shares ISA give one’s returns a nice added boost, too.

Don’t just take our word for it, though. A Freedom of Information (FOI) request from The Openwork Partnership reveals how ISAs have helped supercharge the number of British millionaires.

ISA millions

Latest HM Revenues and Customs (HMRC) data showa that were 4,070 investors sitting on seven-figure ISAs as of April 2021. That’s a near-tenfold increase from the 450 that were reported five years earlier.

The 50 top ISA millionaires were sitting on average pots of £8,509,000, the data revealed. The average across all those 4,000-plus millionaires stood at a tasty £1,397,000.

All of these wealthy investors are likely to have used their ISAs to buy stocks and shares, the data suggested.

Best in the world

The ISA has proved a gamechanger for tens of thousands of everyday investors. According to then-head of partnership services at The Openwork Partnership, Setul Metha:

The ISA has not only created thousands of millionaires, but it has also empowered millions of ordinary investors to build a nest-egg alongside their pension.

Metha — who is now head of UK Intermediary Distribution at AIG – went on to describe the ISA as “perhaps the best tax-free investment wrapper in the western world”.

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

My wealth building strategy

Owning shares can be a bumpy ride at times. It’s never nice to see the value of your investments slump when economic conditions worsen and stock markets fall.

However, UK shares have proven to be an excellent way to create wealth over the long term. And this makes the possibility of some short-term discomfort easier to swallow.

The FTSE 100, for instance, has provided an average annual return of around 7.5% since 1984. The FTSE 250, meanwhile, has yielded an even-better return of 11% since 1992.

This is far better than the return provided by a cash savings account over the period. It’s why I invest some of my spare cash each month in a Cash ISA, but use the majority to buy shares in my Stocks and Shares ISA.

Past performance is not a reliable indicator of the future. But the potential to make big riches makes this strategy worthwhile to me, as I demonstrate below.

A £520 monthly investment

How £520 a month invested in FTSE 100 and FTSE 250 shares could generate £1m.
Created with thecalculatorsite.com

Let’s say I have £520 ready to invest in a Stocks and Shares ISA each month, and decide to invest this equally in FTSE 100 and FTSE 250 shares.

Based on an average 9.25% yearly return, this monthly investment could help push me into millionaire status after 30 years. As the chart above shows, I would have made a nest egg of £1,003,045.94 if those proven rates of return continue.

And that’s excluding any extra cash I would earn by also investing in a Cash ISA.

Buying UK shares isn’t a risk-free activity. But, as I have shown above, it can release substantial wealth and help everyday people secure financial independence.

Royston Wild has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

How the UK State Pension measures up against other countries — and why it’s not enough

Mark Hartley weighs the UK State Pension against other nations, revealing why it’s important for Britons to explore additional options.

Read more »

Three signposts pointing in different directions, with 'Buy' 'Sell' and 'Hold' on
Investing Articles

A stock market crash this summer? Here’s how it could help

With emotion running high, the stock market is in a funny mood right now. And it can make investing choices…

Read more »

Close-up of children holding a planet at the beach
Investing Articles

Investors are pouring cash into Scottish Mortgage Investment Trust. Is it all about SpaceX?

Is this the perfect time to join the revived space race, by grabbing a chunk of the UK's most popular…

Read more »

The words "what's your plan for retirement" written on chalkboard on pavement somewhere in London
Investing Articles

Here’s 1 way to pick buy-and-forget stocks for a lifetime SIPP

Volatile stock markets have shaken the confidence of SIPP and ISA investors in 2026. We need a low-stress way to…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

1 quality stock to consider buying for a brand spanking new ISA

Ben McPoland highlights an excellent growth stock that he's looking to buy in the coming weeks. The company is growing…

Read more »

Investing Articles

How to target a devilishly good £666 weekly income from your Stocks and Shares ISA

Harvey Jones shows how investors can use their annual Stocks and Shares ISA allowance to generate a high and rising…

Read more »

Female Tesco employee holding produce crate
Investing Articles

The Tesco share price is struggling to regain 500p even after strong results – where to from here?

Last week's results should have been a big boost for the Tesco share price, but it failed to rally. Mark…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

£9,500 invested in Aston Martin shares a month ago is now worth…

Aston Martin shares have jumped by over a fifth in a matter of weeks. But they still sell for pennies…

Read more »