Here’s how I’d invest £100 per week in an ISA to get rich and retire early

Investing regularly in an ISA could lead to high returns over the long run, in my view. Here’s how I’d invest given current stock market conditions.

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.

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.

Investing £100 per week in a Stocks and Shares ISA may not seem to be a sufficient amount to make a real impact on an investor’s retirement plans.

However, the past performance of UK shares means regular investments can add up to a sizeable portfolio value over the long run.

As such, with many FTSE 100 and FTSE 250 shares trading at low levels after the stock market crash, now could be an opportune moment to invest in high-quality companies at cheap prices for the long run.

Investing in attractive businesses at low prices in an ISA

While many UK shares have rebounded following the stock market crash, others offer capital growth opportunities for ISA investors. Some sectors remain unpopular among investors due in part to their weak near-term outlooks. Although this may mean their financial prospects are disappointing in the short run, over the long run they could deliver impressive capital returns.

As such, identifying cheap stocks that warrant a higher valuation could be a logical approach to investing regularly in UK shares at the present time. Some FTSE 100 and FTSE 250 companies deserve to trade at higher share prices. These may include those businesses with low debt levels and a large proportion of variable costs. They could weather further economic challenges better than their peers. Similarly, companies with wide economic moats, perhaps in the form of unique products or brand loyalty, may provide greater scope for capital gains in an ISA.

Building a retirement portfolio with UK shares

Clearly, UK shares face short-term risks in many cases. Therefore, having a diverse ISA that contains many companies in multiple sectors could help to reduce risks. It may also allow an investor to benefit from growth opportunities in a wider range of industries. The future is highly uncertain at the present time. So it may be useful to have exposure to more than just a small number of industries in the coming years.

Even if an investor is only able to match the returns of the stock market, they could retire on a surprisingly large ISA portfolio by investing modest amounts regularly. For example, the FTSE 100 has delivered an 8% per annum total return since it was formed in 1984. Assuming the same rate of return on a £100 weekly investment over a working lifetime of 40 years could produce a portfolio valued at over £1.5m.

Clearly, not all investors will have 40 years left until retirement for their ISA to grow. Look to buying a diverse range of today’s high-quality companies at low prices. By doing so, it’s possible to generate market-beating returns over the long run. And that means an investor may be able to generate a higher rate of growth than the FTSE 100 to improve their financial outlook.

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

Long-term vs short-term investing concept on a staircase
Investing Articles

Is now a good time to start investing in the wealth-building stock market?

The stock market is a battle-hardened builder of wealth long term. But with risks mounting, is now a good time…

Read more »

Investing Articles

£10,000 invested in red-hot Tesco shares just 1 week ago is now worth…

Harvey Jones is impressed by how well Tesco shares have defied recent stock market volatility. So can this FTSE 100…

Read more »

Road 2025 to 2032 new year direction concept
Investing Articles

See the income from investing a £20k ISA in this UK stock before it goes ex-dividend on 9 April

Harvey Jones says this UK stock offers one of the highest yields on the FTSE 100. Investors need to act…

Read more »

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

What’s going on with the AstraZeneca share price now?

Dr James Fox explores the recent movements in the AstraZeneca share price and evaluates whether it's still a good long-term…

Read more »

Young female business analyst looking at a graph chart while working from home
Investing Articles

This S&P 500 stock is down 30% and the CEO just bought $10m worth of shares

Insiders only buy a stock for one reason – they expect its price to go up. So, this S&P 500…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

£5,000 invested in BAE Systems shares a month ago is now worth…

BAE Systems shares have been among the FTSE 100's best performers in recent years. The question is, can the defence…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

Here’s how a £20k ISA could generate £7,875 in monthly passive income

Have £20,000 ready to invest? Royston Wild explains how you could put this in a Stocks and Shares ISA to…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
Investing Articles

By April 2027, £2,630 invested in Barclays shares could be worth…

Barclays shares have been flying. But what might happen to a chunk of money invested in the bank's stock over…

Read more »