£10,000 to invest? Here’s why saving instead of buying UK shares could cost me a fortune

Looking to maximise returns on your hard-earned cash? Royston Wild explains why investing in UK shares is the best option for him .

| More on:

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.

Man riding the bus alone

Image source: Getty Images

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.

Savings levels in the UK have hit record highs above £2bn in 2024. But could prioritising saving instead of buying UK shares be costing individuals a lot of cash?

I think so. And fresh research from Janus Henderson Investment Trusts supports that view. It shows that cash savings “returned less than a third of that returned by stocks and shares” in the nine months to September.

It means that Britons have literally missed out on tens of billions of pounds.

A £165bn black hole

According to Janus Henderson, savers earned £58.6bn worth of interest between January and September, equivalent to an average interest rate of 2.93%.

By comparison, the FTSE All-Share Index returned 9.9% through a blend of capital gains and dividend income. Meanwhile, the MSCI World Index provided an even-higher return of 13.4%.

The result in real terms is jaw-dropping. Using Janus Henderson’s calculations, “savers have missed out on £165bn of returns… by comparing cash interest and the return on global equities.”

The report adds that “savers have missed out on £110bn of returns this year compared to investing in UK equities.” Both calculations even allow for three months’ household income being held in a savings account.

Long-term trend

This stunning difference isn’t just a temporary development either. And it’s even more depressing for cash savers when we factor in the eroding impact of inflation.

Janus Henderson says that “£100 saved in cash has lagged behind rising prices by 3.4% over the last 30 years, meaning it buys less today, even with all the interest income earned since, than it did in 1994.”

Conversely, that £100 invested in global shares would have beaten inflation almost seven-fold, or four-fold if spent on UK shares.

A top fund

Past performance is no guarantee of future success. But the resilience and wealth-creating power of the stock market is why the lion’s share of my money is tied up in shares, funds and trusts.

I only hold some money in a savings account to manage risk, and give me cash to draw on in the event of a rainy day. While this is a riskier strategy, I can take steps to reduce the danger by diversifying my holdings.

One strategy I use is to invest some of my capital in exchange-traded funds (ETFs) like the Xtrackers MSCI World Momentum UCITS ETF (LSE:XDEM).

As the name implies, this fund invests in shares from across the globe, 350 in total. And so it allows me to spread risk across a variety of regions — including the UK — as well as a multitude of sectors.

Fund breakdown
Source: Xtrackers

I like the decent exposure to tech stocks including Nvidia, Apple and Meta. This gives me an opportunity to profit from fast-growing tech phenomena including artificial intelligence (AI), robotics and quantum computing. But I’m aware that shares like this could deliver disappointing returns during economic downturns.

Since 2014, this fund has delivered an average annual return of 11.9%. If this continues, a £10,000 investment today would become £348,975 after 30 years.

That’s far better than the £24,568 I could have made by parking £10k in a 3%-yielding savings account.

Shares and funds can rise and fall in price. But returns like this suggest my current strategy is the correct one for me.

Randi Zuckerberg, a former director of market development and spokeswoman for Facebook and sister to Meta Platforms CEO Mark Zuckerberg, is a member of The Motley Fool's board of directors. Royston Wild has positions in Xtrackers (ie) Public - Xtrackers Msci World Momentum Ucits ETF. The Motley Fool UK has recommended Apple, Meta Platforms, and Nvidia. 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

Yellow number one sitting on blue background
Investing Articles

I asked ChatGPT to pick 1 growth stock to put 100% of my money into, and it chose…

Betting everything on a single growth stock carries massive danger, but in this thought experiment, ChatGPT endorsed a FTSE 250…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

How little is £1,000 invested in Diageo shares at the start of 2025 worth now?

Paul Summers takes a closer look at just how bad 2025 has been for holders of Diageo's shares. Will things…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

After a terrible 2025, can the Aston Martin share price bounce back?

The Aston Martin share price has shed 41% of its value in 2025. Could the coming year offer any glimmer…

Read more »

Close-up of British bank notes
Investing Articles

How much do you need in an ISA to target £3,000 per month in passive income?

Ever thought of using an ISA to try and build monthly passive income streams in four figures? Christopher Ruane explains…

Read more »

piggy bank, searching with binoculars
Investing Articles

Want to aim for a million with a spare £500 per month? Here’s how!

Have you ever wondered whether it is possible for a stock market novice to aim for a million? Our writer…

Read more »

Investing Articles

Want to start buying shares next week with £200 or £300? Here’s how!

Ever thought of becoming a stock market investor? Christopher Ruane explains how someone could start buying shares even on a…

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

2 ideas for a SIPP or ISA in 2026

Looking for stocks for an ISA or SIPP portfolio? Our writer thinks a FTSE 100 defence giant and fallen pharma…

Read more »

Midnight is celebrated along the River Thames in London with a spectacular and colourful firework display.
Investing Articles

Could buying this stock at $13 be like investing in Tesla in 2011?

Tesla stock went on to make early investors a literal fortune. Our writer sees some interesting similarities with this eVTOL…

Read more »