How to aim for a £1m Stocks and Shares ISA with just £500 a month

Want to become a Stocks and Shares ISA millionaire? Zaven Boyrazian explains a simple, proven strategy to help this goal in the long run.

| More on:

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.

Young mixed-race couple sat on the beach looking out over the sea

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.

Becoming a Stocks and Shares ISA millionaire is an ambitious goal. But it’s a dream that an estimated 5,000 Britons have already achieved. And apart from having a seven-figure portfolio, the ISA wrapper protects all of these gains from taxes, allowing dedicated investors to enjoy a luxurious lifestyle without HMRC knocking on the door.

Some 5,000 people out of the estimated 14 million who actively invest in the stock market is obviously a tiny minority. This goes to show that reaching ISA millionaire status isn’t an easy feat. However, a lot of these challenges can be eliminated for those willing to be patient. And even investors with just £500 to spare each month can reap potentially enormous rewards.

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.

Crunching the numbers

Over the last five years, the UK stock market, as measured by the FTSE 100, has delivered an average annualised gain of around 12.5%. However, historically, the long-term average has been closer to 8%. So at this rate, how long will it take to become an ISA millionaire?

Putting £500 to work each month at an 8% return will surpass the £1m threshold in just under 34 years. Obviously, that’s a long time to wait. But for those who start early, it’s a nice way to secure a more comfortable retirement. Even more so, considering index funds require little knowledge about investment research, portfolio rebalancing, or risk management. After all, these investment vehicles put all of these tasks on autopilot.

But what if investors want to be greedy or simply don’t have 34 years available? That’s where stock picking enters the picture.

Aiming for market-beating returns

Index funds eliminate a lot of effort and hassle. But investors willing to do the work can potentially earn considerably greater returns by hand-picking top-notch stocks. That’s certainly been the case for those who discovered Games Workshop (LSE:GAW) 10 years ago.

The plastic miniature hobby business may not sound like a high-growth enterprise. But by developing a strong IP and addictive tabletop gaming experience, the company’s nurtured a cult-like following from many of its customers. That’s translated into phenomenal pricing power, paving the way for jaw-dropping revenue and earnings growth.

As a result, shareholders have reaped a staggering 41.6% total annualised return over the last decade. And investing £500 a month at this rate’s enough to cross the £1m threshold in just under 11 years!

Taking a step back

Becoming a millionaire in the space of a decade is undoubtedly an exciting prospect, even more so given the relatively small amount of capital that Games Workshop shareholders have needed.

However, very few British stocks have delivered this sort of explosive gain, and it’s unlikely that Games Workshop will do the same over the next decade. After all, it’s now a much larger business with a £5bn market-cap. Not to mention, as the firm’s grown, it’s become increasingly dependent on international markets, introducing greater foreign currency exchange risk as well as logistical headaches – most recently in the US with the introduction of trade tariffs.

Nevertheless, it goes to show what smart stock picking can potentially deliver. And while a 3,140% return may not be in the cards for Games Workshop between now and 2035, the company still boasts strong growth potential that’s worth mulling, in my opinion.

Zaven Boyrazian has positions in Games Workshop Group Plc. The Motley Fool UK has recommended Games Workshop Group Plc. 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

Abstract 3d arrows with rocket
Growth Shares

Will the SpaceX IPO send this FTSE 100 stock into orbit?

How can British investors get exposure to SpaceX? Here is one FTSE 100 stock that might be perfect for those…

Read more »

Array of piggy banks in saturated colours on high colour contrast background
Investing Articles

Could drip-feeding £500 into the FTSE 250 help you retire comfortably?

Returns from FTSE 250 shares have rocketed to 10.6% over the last year. Is now the time to plough money…

Read more »

Passive and Active: text from letters of the wooden alphabet on a green chalk board
Investing Articles

How much does one need in an ISA for £2,056 monthly passive income?

The passive income potential of the Stocks and Shares ISA is higher than perhaps all other investments. Here's how the…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Investing Articles

The best time to buy stocks is when they’re cheap. Here’s 1 from my list

Buying discounted stocks can be a great way to build wealth and earn passive income. But investors need to be…

Read more »

Bus waiting in front of the London Stock Exchange on a sunny day.
Investing Articles

Martin Lewis just explained the stock market’s golden rule

Unlike cash, the stock market can quietly turn lump sums into serious wealth. So, what’s the secret sauce that makes…

Read more »

Close-up of British bank notes
Investing Articles

£5,000 invested in Greggs shares at the start of 2025 is now worth…

This year's been extremely grim for FTSE 250-listed Greggs -- but having slumped more than 40%, could its shares be…

Read more »

Investing Articles

Looking for shares to buy as precious metals surge? 3 things to remember!

Gold prices have been on a tear. So has silver. So why isn't this writer hunting for shares to buy…

Read more »

British Pennies on a Pound Note
Investing Articles

Up 27% in 2025, might this penny share still be a long-term bargain?

Christopher Ruane's happy that this penny share he owns has done well in 2025. But it's still cheaper now than…

Read more »