Here’s how an investor in their 30s could aim to turn a £10k ISA into £132,676 by retirement

Christopher Ruane explains how someone with a 30-year investing timeframe could aim to increase an ISA stuffed with blue-chip shares by 1,226% in value!

| 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.

ISA Individual Savings Account

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.

There are different ways to prepare financially for retirement no matter how far away it may seem. While an obvious one may be a SIPP, an ISA can be useful too.

Using the decades before retirement to good advantage, an investor can reap the rewards of taking a long-term approach to investing.

Here, as an example, is how someone could turn a £10k ISA into one worth £132,676 over the course of 30 years.

So someone 36 or under starting today could do that before the standard retirement age of 66.

The retirement age could rise again, so it may be that even someone in their late 30s now could take a 30-year timeframe when considering this approach. (Even after 27 years though, today’s 39 year-old could still hope to have a £102,450 ISA by 66).

Doing the maths is the easy bit!

To start with, let me explain the key assumption that underpins the numbers above. They presume a compound annual growth rate of 9%.

That is net of any fees or charges imposed by the ISA provider. Those may seem small on an annual basis, but can add up dramatically over time. It definitely makes sense to shop around for the best Stocks and Shares ISA available.

That key assumption also means compounded growth of 9% a year. That can come from share price growth as well as dividends. (I presume here that dividends are compounded by reinvesting them).

But the key point in my opinion is that this growth is compounded over 30 years, potentially including some bad market periods as well as better times.

So a 9% target is harder to achieve than it may sound. I do think it is possible though.

Choosing the right shares to buy and hold is the hard bit!

Clearly then, making the right choices about how to invest is critical to success.

Diversifying across a range of blue-chip shares would be an important part of reducing the risk of one share performing poorly. £10k is ample to do that, for example, by spreading it over five to 10 different shares.

In a sense, finding the right shares could be difficult. But in fact I think the principles are simple. Basically, an investor will likely be looking for great businesses that are set to stay that way but with a share price lower than the likely long-term value.

One FTSE 100 income share to consider

As an example, one share to consider is M&G (LSE: MNG). The FTSE 100 asset manager operates in a market that has two key advantages in my view, it is huge and it is likely to be around for decades to come.

That attracts competition. Indeed, low-cost rivals like fintechs eating into the market share of long-established firms including M&G is one risk I see.

But M&G has some strengths that hopefully can help it stay competitive. It has a well-known brand. It also has an existing customer base in the millions, spread across over two dozen markets.

A mixture of institutional and retail business also provides some measure of diversification to M&G’s business. The company has proven its cash generation potential and has a generous dividend. Currently, the yield is above 9%.

C Ruane has positions in M&g Plc. The Motley Fool UK has recommended M&g 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

Illustration of flames over a black background
Investing Articles

Recently released: December’s higher-risk, high-reward stock recommendation [PREMIUM PICKS]

Fire ideas will tend to be more adventurous and are designed for investors who can stomach a bit more volatility.

Read more »

Abstract 3d arrows with rocket
Growth Shares

Will the SpaceX IPO send this FTSE 100 stock into orbit?

How can British investors get exposure to SpaceX? Here is one FTSE 100 stock that might be perfect for those…

Read more »

Array of piggy banks in saturated colours on high colour contrast background
Investing Articles

Could drip-feeding £500 into the FTSE 250 help you retire comfortably?

Returns from FTSE 250 shares have rocketed to 10.6% over the last year. Is now the time to plough money…

Read more »

Passive and Active: text from letters of the wooden alphabet on a green chalk board
Investing Articles

How much does one need in an ISA for £2,056 monthly passive income?

The passive income potential of the Stocks and Shares ISA is higher than perhaps all other investments. Here's how the…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Investing Articles

The best time to buy stocks is when they’re cheap. Here’s 1 from my list

Buying discounted stocks can be a great way to build wealth and earn passive income. But investors need to be…

Read more »

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

Martin Lewis just explained the stock market’s golden rule

Unlike cash, the stock market can quietly turn lump sums into serious wealth. So, what’s the secret sauce that makes…

Read more »

Close-up of British bank notes
Investing Articles

£5,000 invested in Greggs shares at the start of 2025 is now worth…

This year's been extremely grim for FTSE 250-listed Greggs -- but having slumped more than 40%, could its shares be…

Read more »

Investing Articles

Looking for shares to buy as precious metals surge? 3 things to remember!

Gold prices have been on a tear. So has silver. So why isn't this writer hunting for shares to buy…

Read more »