How to invest £400 a month in a Stocks and Shares ISA to aim for £1m

A million-pound Stocks and Shares ISA could be within reach. Our writer explains what it could take to achieve this target.

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 Black man sat in front of laptop while wearing headphones

Image source: Getty Images

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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.

There are over 2,000 ISA millionaires in the UK, and I’m aiming to join this group of savvy investors. My Stocks and Shares ISA might be a tad smaller right now, but I’d hope to reach £1m before I retire.

It might sound like a very large number. But with regular contributions over 25 years, it’s quite a reasonable goal, in my opinion.

There are a few points to consider though.

Growing an ISA

On average, the long-term stock market return is said to be around 10%. But it could also be smaller than this and I could even lose money. On the plus side though, there are ways to give it a boost.

Looking back at the best performers of the past decade, I note that the tech-focused Nasdaq index achieved a gain of around 15% a year. That’s despite several downturns and recessions.

I also note that several FTSE 100 shares managed to return over 20% a year.

Bear in mind that the winners of the coming decades may not be the same as in the past, and future returns aren’t guaranteed either.

That said, by investing in a basket of high-quality funds and shares, even just a few big winners could boost my average portfolio gain.

That’s why I’m aiming to average 15% a year for my Stocks and Shares ISA. I calculate that by investing £400 a month it would take around 25 years to reach millionaire status.

Currently, there’s a maximum contribution limit of £20,000 a year. If I was able to invest this larger sum instead, I’d possibly be able to reach my goal a decade sooner.

Innovative stocks

Looking at the coming years, there are multiple themes that I think will be in focus. These include artificial intelligence, healthcare, defence and energy.

Global companies that can innovate and produce new solutions to the world’s problems within these focus areas could do well.

Many of these will be found in the Nasdaq 100, in my opinion. That’s why I’d want to keeping buying shares in Nasdaq 100 ETF.

Quality UK shares

In addition, UK shares offer great potential too. To find the best shares might initially feel like hunting a needle in a haystack. After all, there are thousands of available options.

But with a goal to reach a seven-figure Stocks and Shares ISA, I’d focus on a few key qualities to hunt for the right shares.

These tend to have many of the following characteristics:

  • A wide moat or competitive advantage
  • High and consistent profitability
  • Large return on capital employed
  • Growing earnings
  • A solid outlook

Top picks

Many UK shares meet these criteria, but a few that I’d buy today if I had spare funds include Games Workshop, Judges Scientific, Greggs, Rightmove, and Diageo.

These five profitable businesses all operate in different sectors too. That spreads my risk and avoids putting all my eggs in one basket.

Much can change with individual shares over the years. That’s why I’d need to monitor their progress and make changes where necessary.

Although picking shares can involve more time, I’ve found that it can be lucrative. And hopefully it will help me reach my £1m goal that little bit sooner.

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

Harshil Patel has positions in Games Workshop Group Plc and PowerShares Global Funds Ireland Public - PowerShares Eqqq Nasdaq-100 Ucits ETF. The Motley Fool UK has recommended Diageo Plc, Games Workshop Group Plc, Judges Scientific Plc, and Rightmove 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

Investing Articles

Surely, the Rolls-Royce share price can’t go any higher in 2025?

The Rolls-Royce share price was the best performer on the FTSE 100 in 2023 and so far in 2024. Dr…

Read more »

A young woman sitting on a couch looking at a book in a quiet library space.
Investing Articles

Here’s how an investor could start buying shares with £100 in January

Our writer explains some of the things he thinks investors on a limited budget should consider before they start buying…

Read more »

Investing Articles

Forget FTSE 100 airlines! I think shares in this company offer better value to consider

Stephen Wright thinks value investors looking for shares to buy should include aircraft leasing company Aercap. But is now the…

Read more »

Investing Articles

Are Rolls-Royce shares undervalued heading into 2025?

As the new year approaches, Rolls-Royce shares are the top holding of a US fund recommended by Warren Buffett. But…

Read more »

Investing Articles

£20k in a high-interest savings account? It could be earning more passive income in stocks

Millions of us want a passive income, but a high-interest savings account might not be the best way to do…

Read more »

Investing Articles

3 tried and tested ways to earn passive income in 2025

Our writer examines the latest market trends and economic forecasts to uncover three great ways to earn passive income in…

Read more »

Investing Articles

Here’s what £10k invested in the FTSE 100 at the start of 2024 would be worth today

Last week's dip gives the wrong impression of the FTSE 100, which has had a pretty solid year once dividends…

Read more »

Investing Articles

UK REITs: a once-in-a-decade passive income opportunity?

As dividend yields hit 10-year highs, Stephen Wright thinks real estate investment trusts could be a great place to consider…

Read more »