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.

You can make a million with just £250 and the FTSE 100

It’s easy to make a million with the FTSE 100 (INDEXFTSE: UKX) if you know how.

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

If I told you that you could become a millionaire with just £250 and a simple investment in the FTSE 100, you probably wouldn’t believe me at first. But while this might seem like an unachievable target, it is entirely possible.

It all comes down to the power of compounding. This is the process of money making money and the higher the rate of return, the more potential your money has in the long run. 

Should you buy Rolls Royce shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

Look to investing 

It’s only really possible to become a millionaire with a small regular investment by investing in stocks. As the average savings account currently offers less than 1% per annum, it is virtually impossible to build wealth by saving cash alone as right now, the real return (after inflation) is negative. Equities offer much higher returns. 

Over the 100 years between 1917 and 2017, the average annual return for the FTSE All-Share is 7% (similar returns are available for the FTSE 100). Over the same period, the S&P 500, the leading US equity index has returned around 9% per annum. 

If you can grow your wealth at a rate of 7% to 9% per year, it won’t take much for you to be able to build a life-changing savings pot.

Time to start saving

The earlier you start, the better. If you start saving for your future at 20 rather than 40, the extra 20 years will give you a huge leg up. Unfortunately, most people in their early 20s are still in the initial stages of their careers and do not earn enough to be able to live comfortably and save for the future. So it’s often the case that saving doesn’t begin until their 30s or 40s, which means they have to contribute more to generate similar returns.

For example, if you plan to retire at 70 and start saving at age 20 with a 7% return per annum, £100 a month will be worth £506,000 by retirement.  If you start saving in your 40s with the same performance, monthly contribution and retirement age, by the time you retire your savings will only be worth £117,600. 

Time is the greatest instrument savers have, so every saver should seek to make the most of this valuable tool to build wealth. 

Leaving time for your money to grow

If you plan to retire at 65, you need to start saving to hit the £1m target at age 23. This example assumes you put away £250 a month and your contributions grow in line with inflation (estimated 2.5% per annum). 

If you’re prepared to delay your retirement by a few years to 70, you need only start saving at age 28, although if you can start earlier, you won’t need to save as much every month. 

If you start saving at age 20, at a rate of 7% per annum you only need to put away £135 a month to hit the million pound target by 70. 

It’s never too late 

If you’ve already missed the 20-year-old starting point, it is still possible to hit the £1m retirement fund benchmark if you invest in the US. Based on the S&P 500’s average return over the past 100 years of 9% per annum, if you start saving at age 30 and aim to retire by 65, a contribution of £275 per month will give you a comfortable £1m to retire on.

Rupert Hargreaves has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

More on Investing Articles

Young Asian man drinking coffee at home and looking at his phone
Investing Articles

See what £10,000 invested in dismal Diageo shares just 1 week ago is worth today

Diageo shares are all hangover and no fizz, says Harvey Jones. How long must investors wait before the FTSE 100…

Read more »

Rear view image depicting a senior man in his 70s sitting on a bench leading down to the iconic Seven Sisters cliffs on the coastline of East Sussex, UK. The man is wearing casual clothing - blue denim jeans, a red checked shirt, navy blue gilet. The man is having a rest from hiking and his hiking pole is leaning up against the bench.
Investing Articles

Up 1,146%! 7 things I’ve learned from the stunning Rolls-Royce share price comeback 

Harvey Jones has made a fair bit of money out of the booming Rolls-Royce share price, but he's also learned…

Read more »

Golden Retirees Heading to Beach
Investing Articles

4 steps to building a £38,456 retirement income with ISA shares

Investing £300 a month could deliver a life-changing cash stream in retirement with high-yield income shares. Royston Wild explains how.

Read more »

Content white businesswoman being congratulated by colleagues at her retirement party
Investing Articles

How investing in a Cash ISA could cost you a comfortable retirement

Cash ISAs are celebrated for the brilliant tax benefits they provide. But could focusing on them cost savers the chance…

Read more »

Young black woman in a wheelchair working online from home
Investing Articles

How much could Barclays shares pay in dividends by 2028?

Barclays is one of the FTSE 100's most popular dividend shares. How much could they provide over the next three…

Read more »

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

With a 6% yield and a P/E of just 7.4, is this share a screaming buy for a second income?

Mark Hartley looks at the second income potential of a popular UK dividend stock that still looks undervalued despite compelling…

Read more »

Investing Articles

Forget Nvidia! This ETF is booming inside my Stocks and Shares ISA

A thematic ETF inside this writer's ISA has more doubled the return of Nvidia stock so far in 2026. But…

Read more »

Shot of an young mixed-race woman using her cellphone while out cycling through the city
Investing Articles

These cheap FTSE 250 shares could deliver a £1,550 ISA income in just 12 months!

Searching for the best low-cost dividend stocks to buy? Royston Wild reveals two FTSE 250 property shares with yields above…

Read more »