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.

£20k in a Stocks and Shares ISA? Here’s how I’d aim to turn it into £100k

With a regular savings plan and a solid investment strategy, turning £20k in a Stocks And Shares ISA into £100k very quickly is achievable, says Ed Sheldon.

Young mixed-race woman jumping for joy in a park with confetti falling around her

Image source: Getty Images

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!.

Having £20k in a Stocks and Shares ISA is a decent achievement. But to build up that kind of money in an investment account takes discipline.

Of course, with a solid saving and investment strategy, it’s possible to turn £20k into a much larger sum. With that in mind, here’s how I’d aim to turn £20k in an ISA into £100k.

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.

Capitalising on the annual ISA allowance

The first thing I’d do is put a regular savings plan in place. I’d want to use as much of my annual ISA allowance (currently £20,000) as possible because they can’t be carried forward. Once it’s gone, it’s gone.

Now, one little trick I’d use here to maximise my savings, and ensure I was contributing to my ISA regularly, is a strategy known as ’paying yourself first’.

This involves putting some savings away soon after being paid (before other expenses such as rent, bills, travel, etc).

I’ve used this saving strategy for decades now, and it’s worked wonders, allowing me to build substantial amounts of money in relatively short periods.

I’ll point out that I wouldn’t stress if I couldn’t max out the full £20,000 annual allowance. Putting away that amount every year isn’t easy and not many people are able to do this consistently.

Even if I could only achieve half the allowance (£10,000), it would add up pretty quickly. Especially if my money is invested well.

Putting my money to work

This leads me on to the next part of my strategy – investing my money to grow it faster.

The beauty of a Stocks and Shares ISA is that returns can potentially be achieved well above those offered on cash savings (because there are so many great investment options).

High returns could help me get to my £100k goal sooner.

Now, when it comes to generating strong long-term investment returns, it’s hard to beat the stock market. Over the long run, it’s provided investors with returns of around 7-10% a year.

The thing is though, to achieve these kinds of returns consistently, a solid stock portfolio is required (a handful of low-growth Footsie shares isn’t going to cut it).

Ultimately, a portfolio should be well diversified and include stocks from different industries, geographic regions, and market capitalisations (large companies, small companies, etc)

So what I’d do is set about building a rock-solid portfolio – with the help of experts like The Motley Fool – that’s designed to achieve solid, steady returns over time.

I’d include blue-chip UK stocks such as Johnnie Walker owner Diageo and London Stock Exchange Group, international stocks such as Microsoft and Mastercard, and smaller companies including Rightmove and Kainos.

I’d add in some funds for extra diversification.

This kind of portfolio should provide attractive returns over time.

£100k in five years?

How long would it take to hit my £100k target?

Well, that would depend on my level of contributions and my investment returns.

However, if I was able to contribute £10,000 a year and achieve a return of 8.5% a year on my money, I’d get from £20k to £100k in a little over five years.

Edward Sheldon has positions in Diageo Plc, Kainos Group Plc, London Stock Exchange Group Plc, Mastercard, Microsoft, and Rightmove Plc. The Motley Fool UK has recommended Diageo Plc, Kainos Group Plc, Mastercard, Microsoft, and Rightmove Plc. 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

Overjoyed exited middle aged married couple giving high five, finishing doing domestic paperwork together at home. Euphoric happy older mature spouses celebrating successful investment or purchase.
Investing Articles

This beaten-down FTSE 100 dividend share just jumped 11% in a week but still yields almost 5%

Harvey Jones has been highlighting this dividend share opportunity for weeks and suddenly it's showing signs of life. Can the…

Read more »

Investing Articles

Down 53% since May, is this SpaceX-backed UK stock now in the bargain bin?

The Filtronic (LSE:FTC) share price has come crashing back down to earth in recent weeks. Has the selling gone too…

Read more »

Close-up as a woman counts out modern British banknotes.
Investing Articles

3,566 shares in this FTSE 100 stalwart earns a £1,443 second income

Stephen Wright sees Unilever's battered share price as an attractive option for investors looking for a second income to consider.

Read more »

Bus waiting in front of the London Stock Exchange on a sunny day.
Investing Articles

3 stocks I’m looking to buy in July

Stephen Wright’s stocks to buy list for July includes a specialist chemicals recovery play, a quiet infrastructure compounder, and an…

Read more »

ISA Individual Savings Account
Investing Articles

How do the government’s latest changes affect your Stocks and Shares ISA?

Stephen Wright explains what the new anti-circumvention rules mean for investors with uninvested cash in their Stocks and Shares ISAs.

Read more »

Businessman hand stacking up arrow on wooden block cubes
Investing Articles

Here’s how much I think Rolls-Royce shares will be worth by the end of 2027

Ken Hall is considering buying Rolls-Royce shares. But just how much further could the stock climb by the end of…

Read more »

Young woman holding up three fingers
Investing Articles

Looking for cheap stocks to buy under £1? Here are 3 quality UK businesses to consider

Always on the hunt for cheap stocks to buy, our writer identifies three appealing UK candidates with strong financials and…

Read more »

Rolls-Royce Hydrogen Test Rig at Loughborough University
Investing Articles

Could small modular reactors take Rolls-Royce shares to the next level?

Rolls-Royce Holdings is investing heavily in the development of mini nuclear power stations. But what could this mean for the…

Read more »