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.

How investing £250 a month could make you a future millionaire!

Even small monthly investments can generate considerable wealth. It just takes time, discipline and a good strategy.

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.

It really is possible to become a millionaire by investing regularly. This is not a quick route to millionaire status by any stretch of the imagination, but it’s a great way to save a nest egg for retirement.

Committing to regular investments

Investing just £250 a month over four decades could help you realise a very comfortable retirement. Investing this in an index fund with an average annual return of 9% would create a final pot worth close to £1.2m. Providing an annual income of £30k for 40 years.

XXX

A lump sum deposit to start with will move the goalposts. Reaching your £1m end goal in a shorter time or at a lower annual interest rate. Equally, with a higher monthly contribution, you’ll hit the million-pound mark in less time.

Here are some examples of how this works.

If you invest that same £250 a month at an interest rate of 5%, then four decades later the total sum would be approximately £383,000.

If you have a lump sum to get started with, then the regular monthly investment can realise a greater fortune. By investing an initial £10k, followed by £250 a month at an average annual interest rate of 9% for 40 years, you’ll achieve a final pot worth over £1.5m.  This equates to an annual income of £37.5k for 40 years.

Adjusting the monthly investment, increasing the percentage return or starting with a lump-sum deposit, will affect the final amount achieved.

Long-term investing

Investing in the stock market is a great way to reap the benefits of compound investing and achieve annual interest rates for your savings that beat regular cash account savings rates with a bank.

The four most popular investment vehicles for individual investors are stocks, bonds, mutual funds and exchange-traded funds (ETFs). The amount you get back with each of these varies and the risk attached also fluctuates. The riskier the investment, the higher the returns should be, but equally, more risk means just that, so you could end up losing more than you invested.

I think long-term stock market investing is the most sensible option. It’s the style advocated by Warren Buffett, one of the most successful investors ever. 

FTSE returns

The UK financial indices have produced good returns for investors in recent years. Over the past decade, the FTSE 100 has given us an average return of 7% and the FTSE 250 has produced an average annual return of 11%.

These returns are far better than bank account interest rates. I think an index tracker, that aims to echo one of these indices, is a great investment vehicle. It’s a simple, but an often lucrative way of investing regularly.

Reinvesting dividends is also the key to long-term wealth for long-term stock market investors. By earning interest on your interest, it unlocks the power of that compounding I mentioned above. This is how you rapidly increase your savings and ultimately reach your millionaire goal.

Do you have the discipline required to become a future millionaire? The earlier you start, the better.

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 »