Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

Stop saving and start investing! This plan could turn £100 a week into a million

If you do this, you could be heading for financial independence and early retirement.

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’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.

£100 a week doesn’t seem like a large amount of money and £1m sounds like a lot. But it’s possible to get from one to the other surprisingly quickly if you invest in shares and share-backed investments.

For example, several sources cite the long-term annualised return of the UK’s stock market as being around 8%. And if you can compound your investment at an average 8% per year, my calculations show you could end up with a pot worth just over £1m after around 36 years.

That may seem like a long time, but if you start when you are 20, you may have enough to retire from work forever at around the age of 56 – nice!

What about inflation?

One fair criticism of illustrations like this is that in several decade’s time, £1m will not seem as impressive as it does today because of the eroding effect of inflation on prices. That’s a good point, but when inflation goes up, wages tend to follow. So, if you can find £100 a week to invest today, you may be able to find twice or three times that much to invest each week 20 or 30 years from now. And the higher the sum you compound, the higher the end figure will likely be. So you could end up with rather a lot more than a million after 36 years.

But compounding can be accelerated in other ways too. For example, small increases in the annualised return you achieve on your investments add up to big differences in the sum of money you eventually end up with. And compounding delivers the biggest absolute annual returns in the later years. Therefore, if you extend the period of compounding by five years, say, your pot of money could grow very much larger in a relatively short amount of extra time.

Do the work

However, investing in shares and share-backed investments isn’t a get-rich-quick scheme or a way of accumulating wealth without putting in some effort. One of the biggest dangers is that compounding is interrupted because of poor annual returns or even negative annual returns. And I reckon the best way to try to avoid that happening is by focusing on risk before you look at the potential for gains.

I’d be careful about downside risk by avoiding speculative, high-risk investments altogether. So, for me, it’s out the window with profitless, speculative stocks such as Sirius Minerals. Such shares have the potential to multiply your money many-fold, but they also have the potential to wipe it out altogether.

Instead, I’d focus on the shares of companies with a good record of trading and a financial record that reveals generally rising revenues, earnings and cash flow. Quality is key, for me. And I’d look at individual company shares as well as managed funds and index tracker funds.

Kevin Godbold has no position in any share 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 us better investors.

More on Retirement Articles

Senior couple are walking their dog through a public park in Autumn.
Investing Articles

If a 30-year-old puts £500 a month in a SIPP, by retirement, they’d have…

Worried about not having enough money to retire on? Regularly investing in a Self-Invested Personal Pension (SIPP) may be worth…

Read more »

Senior woman potting plant in garden at home
Investing Articles

Could a 10%+ yielding dividend share like this make sense for a retirement portfolio?

With a double-digit percentage yield, could this FTSE 250 share be worth considering for a retirement portfolio? Our writer weighs…

Read more »

Mature people enjoying time together during road trip
Investing Articles

Keen for early retirement with a second income from dividends? Here’s how much you might need to invest

Ditching the office job early is a dream of many, but without a second income, is it possible? Here’s how…

Read more »

A mature adult sitting by a fireplace in a living room at home. She is wearing a yellow cardigan and spectacles.
Investing Articles

5,223 shares of this high-yield dividend star pay an income equal to the State Pension

Zaven Boyrazian explores a leading dividend stock in the FTSE 100 and calculates how many shares investors have to buy…

Read more »

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.
Investing Articles

I asked ChatGPT for 5 world-class UK stocks for a retirement portfolio. Here’s what it gave me

Searching for top-quality UK stocks for a retirement portfolio? Here are some names that the world's most popular generative AI…

Read more »

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.
Investing Articles

How much do you need in an ISA to earn a £33,333 passive income?

Discover how to target a five-figure passive income in a Stocks and Shares ISA -- and a top 7.6%-yielding dividend…

Read more »

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

Don’t ‘save’ for retirement! Invest in dirt cheap UK shares to aim for a better lifestyle

Investing in high-quality and undervalued UK shares could deliver far better results when building wealth for retirement. Here's how.

Read more »

The words "what's your plan for retirement" written on chalkboard on pavement somewhere in London
Investing Articles

How I generated a 25.9% return in my SIPP in 2025 (and my strategy for 2026!)

Zaven Boyrazian managed to achieve market-beating double-digit returns in his SIPP so far in 2025. Here, he explains how and…

Read more »