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.

Want to retire with £1 million? This is what I think you need to save each month

Becoming a millionaire is more achievable than you might think.

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.

What would you do with a million pounds? It’s a great conversation starter and daily reverie for many British citizens. But the reality of ever having a £1m to spend seems so far-fetched for most of us, that makes it a bittersweet pastime.

What many people don’t realise though, is that it’s not actually as unattainable as we’re led to believe. If you start young enough, a regular and disciplined approach to investing can reap incredible financial rewards. Attaining millionaire status may be possible after all.

XXX

Disciplined approach

If you put £250 a month into an index tracker fund with an average 8% annual return, you could achieve £1m in just under 42 years. By increasing that monthly sum to £350, you would hit the £1m mark in 38 years.

For those with a larger disposable income, it’s easier. £750 a month would take just 29 years and higher amounts than that would short the time still more.

If you can start with a lump sum, this also brings the end goal nearer. A £20k starting pot, topped up with £500 per month would take 31 years.

Average returns

These estimates are all based on an average annual interest rate of 8%. Tracker funds vary in their percentage return, as do stocks and shares.

The FTSE 100 has returned an average of 7% over the past decade and the FTSE 250 has returned 11%. These reasonable yields show that despite good and bad years, a decent return is possible.

If you are confident and have the time to manage individual stocks in an ISA or SIPP, then you could achieve higher returns more quickly, once you factor-in compound dividend returns.

Despite negative news headlines and economic uncertainty around the world, I think the stock market will survive. The FTSE 100 has actually risen over 35% since 2010 and over 632% since it began.

Can you become a millionaire?

As you can see, if you want to retire with £1m, then the amount you need to save each month varies. Factors to consider are the interest rate return on your investments, how long a timeframe you’ve set yourself and what you can afford.

Perhaps you could become a millionaire and retire early with a Stocks and Shares ISA. Don’t rule it out, because even £100 a month at that average FTSE 250 annual return of 11% could achieve a million-pound pot in 42 years.

Warren Buffett, one of the world’s most successful investors has achieved millionaire status many, many times over. He advocates a buy-and-hold investment strategy, which takes full advantage of the rising indices and pays little heed to the intermittent fluctuations caused by global economic trials.

You’d do well to follow his lead, but you need to engage discipline and not let fear or greed get the better of you. I realise that’s easier said than done for many of us, but that’s why index funds can be a great way to get in on the action. It may sound boring but can prove very lucrative. 

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 »