Who wants to be a Stocks and Shares ISA millionaire? It’s easier than you might think

Build a £1m Stocks and Shares ISA with £10,000 and just £200 per month. I’ll show you exactly how to do it.

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.

Not everyone can win a million on a game show. It’s just not possible for most. But becoming a Stocks and Shares ISA millionaire is much easier and more likely.

What’s the catch? Well, it not likely to be possible to do it by tomorrow, next year, or even in five years. You need patience and to be able to invest for the long term.

If you have a long enough time frame to invest, you might be surprised how little you need to regularly invest to achieve the goal of becoming a Stocks and Shares ISA millionaire.

If you have 35 years until you plan to retire, you could reach this goal starting with just an initial £10,000 plus a regular investment of £200 per month. That’s just £2,400 per year.

The average stock market return over the long term is said to be 10% per year. Over a long investing period of 35 years, it’s reasonable to assume that an average annual return of 10% is likely. Of course with the stock market there are no guarantees, but to me, it seems a safe assumption on the basis of probabilities.

What if you have 25 years until you want to retire? To reach £1m in your Stocks and Shares ISA, you would need to start with £10,000 plus a regular monthly investment of £670. Alternatively, if you started with £30,000, you could do the same with a regular monthly investment of £485.

As you can see, the earlier you start investing, the less you need to invest every month. This is due to the beauty of compounding. Einstein famously once said, “compound interest is the eighth wonder of the world”. I’m not surprised. It really is magical.

What I’d invest my Stocks and Shares ISA in

If I were to create a simple automated strategy to retire with £1m, I would set up a Stocks and Shares ISA with my initial £10,000 investment. I would then add a regular investment plan that drip feeds £200 per month into a fund that tracks the S&P 500 index.

Investing in a stock index tracker like this is one idea. Another option is to select a managed fund or investment trust. I like the Fundsmith Equity Fund, managed by veteran fund manager Terry Smith. It holds a concentrated portfolio of 20 to 30 global companies, and focuses on high-quality businesses that are difficult to replicate.

Increasing investment returns

Is it possible to become a Stocks and Shares ISA millionaire a bit quicker without increasing your investment amount? Yes, it’s possible. To do so, you would need to increase your investment return.

By taking a more active approach to investing, I believe it’s possible to achieve a return greater than 10%. Achieving 12% to 15% could be realistically possible, in my opinion. To do so you may need to research some other good investment ideas.

At a 15% annual return, starting with £10,000 and investing £200 per month, you could retire a Stocks and Shares ISA millionaire in 25 years. So increasing your annual return from 10% to 15% reduces your target time from 35 years down to 25 years, highlighting again the beauty of compounding.

Harshil Patel owns units in Fundsmith Equity Fund. 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

Black woman using loudspeaker to be heard
Investing Articles

A SIPP opened at birth could be worth £10m in 55 years

The SIPP is an incredible vehicle for building wealth and saving for retirement. Many Britons just don't realise how early…

Read more »

Young Caucasian woman at the street withdrawing money at the ATM
Investing Articles

2 passive income ideas for a Stocks and Shares ISA

Looking for passive income stocks in April? Here are two high-quality FTSE 250 dividend shares to consider buying for an…

Read more »

Front view of aircraft in flight.
Investing Articles

£5,000 invested in Wizz Air shares 2 days ago is now worth…

This week has been a rather good one for beaten-down Wizz Air shares. What would have happened to a £5,000…

Read more »

Road trip. Father and son travelling together by car
Investing Articles

How much do you need in an ISA for £1,000 a week in passive income?

Ben McPoland highlights a FTSE 250 stock down by more than 25% that offers good value and an attractive 5.5%…

Read more »

A row of satellite radars at night
Investing Articles

Is Elon Musk about to send this FTSE 100 stock into orbit?

This year is shaping up to be a big one for this FTSE 100 stock and part of the reason…

Read more »

Petrochemical engineer working at night with digital tablet inside oil and gas refinery plant
Investing Articles

Up 50% in a month! Meet Quadrise, the soaring UK penny stock that offers an alternative to oil

Mark Hartley takes a closer look at a British penny stock that envisions a future less dependent on crude oil.…

Read more »

Senior couple crossing the road on a city street. They are walking with shopping bags while Christmas shopping.
Investing Articles

How much do I need in a SIPP for a £500 monthly passive income?

Looking to earn a reliable passive income from your SIPP? Royston Wild explains how this could be possible with some…

Read more »

Hand of person putting wood cube block with word VALUE on wooden table
Investing Articles

A P/E ratio of less than 7. Is this a red-hot value share to consider now?

James Beard uses a popular tool to identify a UK share that’s potentially undervalued. But he reckons judgement is also…

Read more »