No savings at 40? I’d buy cheap FTSE 100 stocks in an ISA today to get rich and retire early

I think the FTSE 100 (INDEXFTSE:UKX) offers long-term capital growth potential that could help you to build a generous retirement nest egg.

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.

Buying cheap FTSE 100 shares after the recent stock market crash may not seem like a sound way get rich and retire early.

However, the index has experienced similar declines in its price level in the past and has been able to fully recover from them. Therefore, investors aged 40, or who have a long time horizon, are likely to have sufficient time for their holdings to recover.

Furthermore, with the FTSE 100 currently offering low valuations across many of its sectors, now could be the right time to start planning for your retirement. Especially since that process may be far simpler and cheaper than many individuals realise.

A long-term time horizon

The FTSE 100’s recovery potential may seem limited at present. The world economy is likely to experience a recession this year, and ongoing restrictions on people’s movements could hurt the financial outlooks for many large-cap shares. This may lead to further declines in their price levels in the short run.

However, the stock market has experienced numerous periods of economic decline in the past. It’s always recovered from them to post new record highs. Even if that outcome seemed improbable during the worst parts of its downturns.

A similar outcome is likely in the coming years, with many FTSE 100 companies having the financial strength to overcome the near-term risks they face. Investor sentiment is also likely to improve as the economic outlook strengthens.

As such, building a portfolio of FTSE 100 shares while they trade at low prices could be a sound move if you have a long-term time horizon. A stock market recovery may take place over a period of years, rather than months. But if you’ve sufficient time left until you retire for this process to take place, then you could capitalise on low valuations across the index to generate high long-term returns.

Investing in FTSE 100 shares today

The process of buying cheap FTSE 100 shares may be easier than many investors realise. For example, opening a tax-efficient account, such as a Stocks and Shares ISA, can be completed online in less than 10 minutes. Its annual management charges are often less than the cost of a single trade, which means your costs of investing in shares are likely to be relatively low.

Low sharedealing costs mean diversifying across numerous sectors and geographies is a more achievable goal for a wider range of investors. Diversification reduces overall risk since you’ll be less reliant on a small number of businesses to generate your returns. It may also enable you to access growth opportunities in a wider range of industries that improves your returns.

Certainly, you won’t be able to build a large retirement nest egg in a short space of time. But, with a long time horizon and regular investment, you can generate a surprisingly generous passive income in older age. And that comes through buying FTSE 100 stocks prior to a likely global economic recovery.

Peter Stephens 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

Santa Clara offices of NVIDIA
Investing Articles

Will Nvidia shares continue surging in 2026 and beyond?

2026 will be an exciting year for Nvidia shares as the semiconductor giant launches its latest generation of AI chips.…

Read more »

Investing Articles

Check out the BP share price and dividend forecast for 2026 – it’s hard to believe!

Harvey Jones is feeling rather glum about the BP share price but analysts reckon it's good to go. So who's…

Read more »

Investing Articles

I asked ChatGPT for its top FTSE 100 stock for 2026, and it said…

Muhammad Cheema asked ChatGPT for its top FTSE 100 pick, and its response surprised him. He thinks he’s found an…

Read more »

Investing Articles

By the end of 2026, can Rolls-Royce shares hit £17?

Rolls-Royce shares have had another phenomenal year, rising by 95.4%. Muhammad Cheema takes a look at whether they can continue…

Read more »

Investing Articles

Will Barclays shares continue their epic run into 2026 and beyond?

Noting that difference of opinion is a global norm, Zaven Boyrazian discusses what the experts think will happen to Barclays…

Read more »

Investing Articles

Prediction: analysts reckon Taylor Wimpey shares will soar almost 25% in 2026. Seriously?

When it comes to Taylor Wimpey shares, Harvey Jones is the eternal optimist. So will the high-yielding FTSE 250 housebuilder…

Read more »

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

Up 83%+ last year, will these FTSE 100 shares do it all again in 2026?

These FTSE 100 stocks delivered share price gains of up to 403% over the last year! Royston Wild reckons they…

Read more »

Investing Articles

Could the Lloyds share price surge by 100% in 2026?

The Lloyds share price surged by almost 80% in 2025, making it one of the best-performing FTSE 100 stocks of…

Read more »