Looking for a passive income? I’d buy the FTSE 100 index

The FTSE 100 provides the perfect blend of international diversification and growth for income investors.

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.

If you’re looking for a passive income stream, the FTSE 100 could help you hit this goal. The FTSE 100 is one of the most income-focused stock indices in the world. It currently supports a dividend yield of nearly 4.7%, which is higher than almost any other developed market stock index. And that’s not the Footsie’s only attractive quality.

Global income

The leading index’s dividend yield is an aggregation of all of the dividends of its constituents. So, in effect, 100 different companies contribute to the distribution.

This suggests the dividend is also very sustainable. Indeed, for the yield to fall to zero, every member would have to eliminate their payouts. That’s unlikely ever to happen.

One or two companies might cut their distributions in a single year, but the diversified nature of the FTSE 100 suggests income investors have plenty of protection.

More than 70% of the index’s profits also come from outside the UK. What’s more, there’s not one single sector that has a disproportionate impact on the FTSE 100.

This diversification has helped the index navigate some tough times. For example, in 2008, when the banks were in trouble, mining stocks helped support the index. When the miners crashed several years later, consumer goods companies picked up the slack. Now banks are back in vogue (from an income perspective anyway).

Income and growth

The FTSE 100’s diversification has also helped the index’s growth, and this should continue. In theory, company earnings should expand inline with inflation at a minimum over the long run.

That suggests growth of 2% to 3% per annum over the long run. In theory, this earnings growth should have a knock-on effect on stock prices.

On top of this, there’s that 4.7% dividend yield. Added together, these figures suggest investors can look forward to a total return (income and capital growth) of between 6.7% to 7.7% over the long run.

These numbers are slightly below the FTSE 100’s historical average. The index has returned approximately 8% per annum since its inception. However, it’s always better to have a margin of safety when trying to estimate long-term market returns.

Index fund

Another advantage of using the FTSE 100 to generate a passive income is that it’s straightforward to track the index. There are FTSE 100 tracker funds on the market that currently charge less than 0.1%.

All these funds do is track the index, so there’s no risk of the fund manager picking the wrong stocks. It’s also helpful for investors who want to generate a passive income from dividend stocks, as picking income investments can be a tricky process.

The power of compounding

If you own a low-cost FTSE 100 tracker fund, all you need to do is sit back and let the power of compounding do its work.

For example, an investment of £20k in a FTSE 100 tracker, with additional contributions of £200 a month, could yield an investment pot of £136k after 15 years. That could be enough to throw off an annual passive income of nearly £8.2k a year, based on the FTSE 100’s current dividend yield of 4.7%. 

Rupert Hargreaves owns no share 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

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

As the stock market goes crazy, here’s a FTSE 250 share I’m thinking about buying

The stock market has officially gone haywire, with the FTSE 100 entering correction territory today. Here's what I've got my…

Read more »

Three signposts pointing in different directions, with 'Buy' 'Sell' and 'Hold' on
Investing Articles

Load up on cheap shares now – or wait to see whether they get even cheaper?

As the market fluctuates, some shares may suddenly look cheap. How an investor acts in such moments can affect their…

Read more »

Close-up of British bank notes
Investing Articles

Is this a once-in-a-decade opportunity to target a second income?

Looking to make a large second income from UK dividend shares? Now might be the opportunity you've been waiting for,…

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

What on earth is going on with Barratt Redrow shares?

Barratt Redrow shares are the FTSE 100's biggest faller over the last month. What has been going on with the…

Read more »

Close-up of British bank notes
Investing Articles

This UK penny stock is tipped to double by City analysts!

What should we do when a favourite penny stock falls due to short-term pressures? Consider buying for the long term,…

Read more »

Calendar showing the date of 5th April on desk in a house
Investing Articles

£390 of income a week from a £20k Stocks and Shares ISA? Here’s how!

Christopher Ruane explains how someone with a £20k Stocks and Shares ISA and long-term timeframe could target hundreds of pounds…

Read more »

Abstract 3d arrows with rocket
Investing Articles

Up 25% YTD! Is this red-hot penny stock still ‘cheap’?

This penny stock has been on fire in 2026. Ken Hall takes a closer look at the investment story behind…

Read more »

Man smiling and working on laptop
Investing Articles

Stock market correction? A passive income opportunity!

Looking to turbocharge your passive income? The stock market correction could be a once-in-a-decade chance to do just that, says…

Read more »