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.

How I’d invest a £20K Stocks and Shares ISA to build long-term wealth

The annual contribution deadline for Stocks and Shares ISAs is just weeks away. Here’s how our writer is trying to use his ISA to get richer over time.

Middle-aged Caucasian woman deep in thought while looking out of the window

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.

With this year’s deadline for ISA contributions fast approaching, I have been thinking about how I can best use the opportunity. One thing I like about a Stocks and Shares ISA is that it can be a useful vehicle for me as I try to build wealth over the long term.

If I had a spare £20,000 to invest in my ISA and wanted to try and grow my wealth over time, here is how I would go about it.

XXX

Getting started

The first thing, of course, would be actually having a Stocks and Shares ISA. If I did not have an ISA already I would open one, so I could put the money into it now, before the looming contribution deadline.

Pick an investment strategy

I would want to buy and hold shares for years rather than constantly messing around with what was in my ISA, racking up dealing charges at the same time.

So I would set out an investment strategy I felt suited my objectives and risk tolerance. I could then use that to help me decide how to invest my cash.

Growth, income or both

For example, I could try to focus on building dividend streams, either to withdraw or else leave inside the ISA and compound. Alternatively I might decide to focus on massive operators I think have further growth prospects ahead, such as Amazon and Alphabet.

Another approach could also be based around growth, but targeting small and medium-sized firms rather than the big boys. Holding such shares in my ISA for years, I would have the sort of timeline needed in many cases for a young business to grow into its potential.

These are not mutually exclusive strategies. I could mix and match, for example allocating £12,000 to income shares and £8,000 to growth ones. The key thing is deciding what I think is the most suitable strategy for me. That will give me a yardstick against which to measure my investment choices down the line.

Hunt for shares

Using that approach, I would scour the market for shares that I felt could be a good fit. In each case, my focus would be on buying into great businesses with attractive share prices. I have a bias for proven business models, but with growth companies in their early stages finding such proof of profitability can be tricky. Many ultimately successful firms are loss-making in their formative years.

The good thing about a Stocks and Shares ISA is that, having put my money into it, I do not need to invest it immediately. Indeed, I would be in no rush.

At the moment, I do see some great bargains in the UK stock market. But if I did not, I would simply wait patiently to invest – for years if necessary – rather than lower my standards. If I can find truly brilliant shares to buy, I would then happily wait for time to work its magic.

Suzanne Frey, an executive at Alphabet, is a member of The Motley Fool’s board of directors. John Mackey, former CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool’s board of directors. C Ruane has positions in Alphabet. The Motley Fool UK has recommended Alphabet and Amazon.com. 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 »