We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

Here’s how I’d invest £25 a month in a Stocks and Shares ISA

The stock market can transform relatively small sums into a substantial nest egg. Here’s how one Fool would go about it.

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.

Stock markets display some big rises and falls over short periods. However, over the long term, these smooth out into a steady upward climb. This is because many of the companies become more valuable as they increase their sales, profits and dividends over the years.

As a result, long-term investing in the stock market can transform relatively small sums into a substantial nest egg. What’s more, if you invest via a Stocks and Shares ISA, all your gains are shielded from tax.

XXX

Some providers, including Hargreaves Lansdown and AJ Bell, allow you to make regular investments from as little as £25 a month. But is it worth investing such a sum, and how would I go about it?

Getting started with £25

Share dealing isn’t expensive these days. However, even the lowest trading charges will eat a disproportionate chunk of a £25 investment. This makes buying shares in individual companies impractical for small-sum investors.

However, investing in funds can be a different matter. Hargreaves Lansdown, for example, makes no charge for a monthly direct debit into funds. As such, it makes sense to forget about individual stocks and invest in a fund instead.

Keeping it simple

There are all manner of funds to choose from. But I think there’s a lot to be said for keeping it simple with a low-cost stock market tracker. For example, the HSBC FTSE All-Share Index Fund (Class C Accumulation) may be a bit of a mouthful, but its objective is very simple. It tracks the performance of the FTSE All-Share Index, less a very low annual management charge of 0.07%.

The FTSE All-Share Index contains over 600 companies. These range from global giants, like HSBC and Shell, through medium-size firms, such as Greggs and McCarthy & Stone, to smaller companies like Harry Potter publisher Bloomsbury.

As such, the HSBC FTSE All-Share Index Fund (Class C Accumulation) is diversified by company size, industry and geography. Investors benefit from broad exposure to economic growth both at home and abroad.

The ‘accumulation’ part of the fund’s name means it automatically reinvests the dividends many of the companies pay their shareholders. Reinvesting dividends compounds growth, snowballing long-term returns.

Turning £25 into £1,000

Over the last 10 years, the HSBC fund has delivered growth of 8.27% annualised. This is around the long-term historical average of the UK stock market.

This rate of return would turn a £25 investment into £50 in less than nine years, into £500 in less than 38, and into £1,000 in less than 47. The snowballing effect of long-term investing is the reason I believe you should start putting money into the stock market as early as possible — even a relatively small sum, like £25 a month.

Finally, do make sure before you start that you have no expensive debt (on credit cards, for example). Also, that you’ve saved some cash in an easy-access account as an emergency fund. Basically, you don’t want to be dipping into your long-term stock market investments to cover any short-term cash flow needs. Happy investing!

G A Chester has no position in any of the shares mentioned. The Motley Fool UK has recommended Hargreaves Lansdown and HSBC Holdings. 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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »