Here’s how I’d aim to get rich investing £89 a week in FTSE 100 shares

Putting under a hundred pounds a week into FTSE 100 shares, here’s how our writer would aim to build a portfolio worth over £750,000 in 30 years.

| 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.

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.

Mature couple at the beach

Image source: Getty Images

Imagine if we could walk down the high street or drive through an industrial estate, looking at successful and massively profitable businesses, knowing that you owned part of them. The thing is, we can! All the companies in the FTSE 100 index of leading shares on the London market are traded by the investing public.

In fact, I think steady investment over time in carefully chosen FTSE100 companies could help me build serious wealth over the long term. Here’s how.

Tried and tested

First, I ought to explain why I am focusing here on the FTSE 100. After all, many of the country’s largest companies are long-established businesses in mature industries. They may lack the racy growth prospects of smaller, newer firms in the FTSE 250 or the US Nasdaq.

But what they do have is scale. In itself that is not an indication of profitability in the past, or indeed in the future. But overall, the FTSE 100 is a collection of many large, proven businesses with sizable income streams I think could endure.

Finding shares to buy

Still, I would not ‘buy the index’ by investing in a tracker fund. Instead, I would be looking to choose – carefully – individual shares I felt had real long-term promise.

To do that, I would ask myself three key questions. How profitable is the business model likely to be? What might change that in the future? And how attractive is the valuation now?

A real world example

To illustrate this, consider a company whose products you may well have used over the past few days whether you realised it or not: Unilever (LSE: ULVR). In fact, the company’s products are used several billion times a day around the globe.

The company operates in markets I expect to benefit from long-term demand, such as shampoo and bodycare.

Selling soap bars might not sound like great business as the barriers to entry are low, after all. However, that is where the company’s investment over many decades in building iconic brands like Marmite and Dove pays off.

Having unique brands, proprietary technology and unique product formulations can help the company to differentiate itself from rivals. That gives it pricing power, in turn enabling it to make sizeable profits and fund a quarterly dividend.

However, that formula can go awry. A risk I see at the moment is that a weakening economy may lead shoppers to plump for supermarkets’ own brands.

But as a long-term investor, I consider Unilever as a solid business with strong future dividend potential. If I had spare cash I would happily buy it for the long term.

Building wealth over time

By building a diversified portfolio of high-quality FTSE 100 shares at attractive valuations, I think I could build wealth.

Imagine I did that with £89 each week and was able to generate a compound annual growth rate of 10% (from a combination of share price growth and reinvesting dividends). That is not guaranteed, of course, but it is possible. After 30 years, I could have a portfolio worth over three quarters of a million pounds!

C Ruane has no position in any of the shares mentioned. The Motley Fool UK has recommended Unilever. 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

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

Up 17% this year, the BT share price looks good. But are these price swings sustainable?

With recent volatility overshadowing the dividend appeal, Mark Hartley investigates what's going on with the BT share price.

Read more »

Passive income text with pin graph chart on business table
Investing Articles

1 no-brainer dividend stock to buy for lifelong passive income?

With a massive wave of baby boomers retiring, this popular UK dividend stock could see its profits explode over the…

Read more »

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

3 high-yield income stocks, investment trusts, and ETFs to consider in 2026!

Looking for the best income stocks to buy? Royston Wild reveals a top trust, a fantastic fund, and a robust…

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 FTSE 100 stocks could help an investor double their State Pension with a £25,150 annual income

Harvey Jones shows how building a diversified portfolio of FTSE 100 stocks in an ISA could help investors turbo-charge their…

Read more »

Front view of a young couple walking down terraced Street in Whitley Bay in the north-east of England they are heading into the town centre and deciding which shops to go to they are also holding hands and carrying bags over their shoulders.
Investing Articles

How to earn a tax-free second income from UK property without purchasing a buy-to-let

Looking to build a second income from UK property but don’t have the money for a buy-to-let? Take a look…

Read more »

Investing Articles

Here’s the dividend forecast for Lloyds shares as we head into a new 2026 ISA season

Mark Hartley checks forecasts to see what income advantages Lloyds shares could add to an ISA portfolio over the coming…

Read more »

ISA coins
Investing Articles

My Stocks and Shares ISA is in the red… and I can’t stop smiling

After beating the market for three years in a row, my Stocks and Shares ISA is showing a loss in…

Read more »

Senior Couple Walking With Pet Bulldog In Countryside
Investing Articles

Here’s how a £20k ISA could earn you a £6,493 income every month!

This one ISA trick could significantly increase the amount of passive income investors make over the long term. Royston Wild…

Read more »