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.

I’d drip-feed £400 a month into cheap UK shares in an ISA to retire in comfort

I think buying UK shares right now is a brilliant way to build a big retirement fund. Here is why I’m still investing in my Stocks and Shares ISA.

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.

UK share prices are still straining to gain ground as the Covid-19 crisis rolls on. The FTSE 100, at 6,500 points, has made little progress since last summer and just closed at its cheapest since early December.

This smacks of a wasted opportunity, in my opinion. There are stacks of quality UK shares out there going at what I consider to be bargain-basement prices following the 2020 stock market crash. Compare the Footsie’s performance to those of other major global share bourses like the Dow Jones and the Nikkei. These two particular indexes are, as I type, moving northwards and approaching their respective record January highs.

XXX

Why I’m still buying UK shares

It could be argued that UK share investors are being overly cautious. I’ve certainly continued building my Stocks and Shares ISA since the public health emergency began last winter.

Now I won’t downplay the possibility that the economic rebound could be lumpy and take longer than anticipated. It’s not just hiccups regarding the fight against Covid-19 that could hamper the recovery. Other issues like Brexit, the impact of soaring sovereign debt levels, and renewed trade wars could hamper corporate profits in the short to medium term too.

But I also see reasons to be optimistic. The British economy has been hardest hit of all developed economies from the coronavirus crisis, sure. And a lot of UK shares face further profits upheaval in 2021. However, I believe the outlook for the global economy is a lot rosier, helped by the huge stimulus measures of governments and central banks. The future therefore appears very bright for London-quoted companies that have large exposure to foreign markets.

The UK national flag in front of Canary Wharf skyscrapers where professionals trade shares for a living.

Just £400 a month could help me build a big ISA

Besides, I don’t buy UK shares based on the expected level of shareholder returns in the near future. Of course I make an effort to avoid stocks whose profits could fall off a cliff, or whose balance sheets might come under significant pressure, in 2021. But I invest based on the returns a share is likely to generate over a decade, perhaps longer.

Over an extended time frame UK share investors make an average annual return of 8%, studies show. The negative impact of stock market volatility and temporary profits hiccups tend to be greatly diluted over time. This is why I’d drip-feed £400 into my Stocks and Shares ISA each month. Using that return estimate of 8%, a total investment of £144,000, and a 30-year time frame, the sums work out to £563,420.

There’s no guarantee, of course, and it’s important to have a well diversified portfolio of good quality shares. But that’s the sort of figure that can help Britons like me to head off the rising dangers to the State Pension. And I think now is a particularly great time to start building a UK shares portfolio too. This is because plenty of top-quality companies are still trading at rock-bottom prices following the 2020 stock market crash.

Royston Wild 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 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 »