How I’d invest £750 a month in a Stocks and Shares ISA to make a million

Investing money on a regular basis via a Stocks and Shares ISA could lead to high returns that increase an investor’s chances of making a million.

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.

Making a million via a Stocks and Shares ISA continues to be a realistic prospect for many investors. Certainly, the near-term outlook for the stock market may be challenging due to economic difficulties. However, the long-term performance of the FTSE 350 is likely to include strong growth judging by its track record.

Therefore, now could be the right time to start buying a diverse range of good value shares. Holding them for the long run could produce an ISA valued in excess of £1m.

Investing money in good value shares

It may be tempting for Stocks and Shares ISA investors to buy the cheapest or the fastest-growing shares. But obtaining a mix of these two qualities could be a sound means of generating high returns.

Cheap shares with lacklustre financial prospects over the long run are unlikely to command higher valuations. Similarly, stocks with high earnings growth prospects that trade on excessively high valuations are also unlikely to offer scope for capital growth.

As such, identifying companies with attractive long-term futures while they trade at fair prices could be a better idea. They may offer a more realistic opportunity to build a large nest egg versus cheap shares or growth shares that lack a margin of safety.

Such a strategy has generally been profitable in the past. For example, investors such as Warren Buffett have used value investing to great effect to obtain higher returns than the wider stock market.

Building a diverse Stocks and Shares ISA

Some Stocks and Shares ISA investors may simply purchase a handful of companies. They may determine that their best ideas are the only ones worth holding. However, this means they’re exposed to a significant amount of company-specific risk. This is where an individual business experiences a share price fall that has a large impact on a portfolio’s performance. This is because it represents a large proportion of its total holdings.

Therefore, it’s important to diversify among a range of companies that operate in different regions and sectors. This can reduce the risk of loss. It will also improve returns through allowing an investor to capitalise on a broader range of opportunities.

Making a million

Even if a Stocks and Shares ISA’s performance matches that of the stock market, it can become worth in excess of a million over the long run. For example, a £750 monthly investment that matches the FTSE 250’s 8% annual total returns over the past 20 years would be worth £1m in under 30 years.

However, it’s possible to obtain a higher return than the stock market through building a portfolio of undervalued shares. Over time, they could produce high capital returns that reduce the period it takes to obtain an ISA valued in excess of £1m.

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

ISA coins
Investing Articles

Decided not to bother with a Stocks and Shares ISA? You might be missing these 3 things!

With a fresh annual allowance for contributing to a Stocks and Shares ISA upon us, what might people who don't…

Read more »

GSK scientist holding lab syringe
Investing Articles

Why is everyone buying GSK shares?

GSK shares have been outperforming the FTSE 100 in 2026. Paul Summers takes a closer look and asks whether this…

Read more »

Middle-aged white man pulling an aggrieved face while looking at a screen
Investing Articles

£10,000 invested in easyJet shares at the start of 2026 is now worth…

Anyone buying easyJet shares will have endured a rough ride since January. Paul Summers wonders whether things could get even…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing Articles

5 years ago, £5,000 bought 2,645 Barclays shares. But how many would it buy now?

Despite delivering an impressive return since April 2021, Barclays' shares have lagged the FTSE 100's other banks. James Beard considers…

Read more »

Side of boat fuelled by gas to liquids, advertising Shell GTL Fuel
Investing Articles

5 years ago, £5,000 bought 354 Shell shares. But how many would it buy now?

When it comes to Shell’s numbers, most of them are impressive. And it’s no different when looking at the recent…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

I asked ChatGPT if I should buy Aviva, Diageo or BAE Systems stock and it said…

Aviva, Diageo and BAE Systems shares are popular FTSE 100 picks. But which of the three does ChatGPT like the…

Read more »

Tesla car at super charger station
Investing Articles

SpaceX’s IPO threatens to leave the Tesla share price on the forecourt

As Elon Musk starts fuelling the engines for a SpaceX IPO, could the Tesla share price get left in the…

Read more »

Investor looking at stock graph on a tablet with their finger hovering over the Buy button
US Stock

A once-in-a-decade chance to buy software stocks?

Michael Burry thinks now is the time to think about buying falling tech stocks. But it might depend on which…

Read more »