To target a £5k annual second income, how much would you need to invest in FTSE 100 shares?

Our writer runs some numbers on what it would take to earn a £5k second income each year from owning a portfolio of blue-chip dividend shares.

| 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.

Young mixed-race couple sat on the beach looking out over the sea

Image source: Getty Images

One way to earn a second income is to build a portfolio of blue-chip shares that pay out dividends.

How much an investor needs to invest to meet a particular target depends on a few things. One is the prospective dividend yield at the time of investing. Another is whether that prospective yield ends up being delivered. After all, no dividend is ever guaranteed.

Understanding the role of dividend yield

Let’s start with yield.

At a 10% yield, a £5,000 annual second income would require investing £50,000. At a 7.5% yield, it would take £75,000. At a 5% yield, the amount required rises to £100,000.

So, does it make sense just to invest in 10% yielders, such as FTSE 100 insurer Phoenix (LSE: PHNX)?

Maybe – but maybe not.

Just investing on the basis of yield alone is a mug’s game. Dividends can be cut or cancelled — so the prospective yield today can end up being very different to the actual yield in future.

That said, I could be interested if a good company selling at an attractive share price also offers a high yield. I do not invest just because of yield. But equally, I would not be put off just by a high yield.

In fact, it could make the share more attractive for me when it comes to building a second income.

Quality first and foremost

Phoenix is a case in point, as it is a share I think investors should consider.

The company operates in a large, complex market. That complexity acts as a barrier to entry, although there are still plenty of rivals in the insurance market.

But Phoenix has a number of advantages. One is its large customer base, numbering around 12m. Another is its collection of trusted brands, including Standard Life and SunLife. It also has a proven business model that has helped underpin annual dividend growth in recent years, a feat the firm aims to replicate in coming years.

No share is risk-free and a double-digit yield does make me wonder if I have missed something other investors see as a big risk.

One concern I have is the impact any property market downturn could have on the valuation assumptions used in Phoenix’s mortgage book. If those assumptions need to be revised, that could be bad news for profits.

Spreading the risk

Overall, though, I see a lot to like about the investment case for Phoenix.

But things can change, so no matter how much I like a share I always keep my portfolio diversified. With the average FTSE 100 yield currently hovering around 3.6%, a 10%+ yield is exceptional. A 7.5% average yield, however, is less exceptional.

I think I could aim for a £5k annual second income investing £75k in the current market. I am not doing that all at once, but bearing in mind annual ISA allowances, am building up to it over time.

C Ruane 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

British pound data
Investing Articles

The red lights are flashing again for Lloyds’ share price! Here’s why

Lloyds' share price continues to defy gravity. But Royston Wild thinks it's only a matter of time before the FTSE…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

Aston Martin shares are now only 41p!

Aston Martin shares just dropped to around the 41p mark! Is this a brilliant buying opportunity or a stock that…

Read more »

Artillery rocket system aimed to the sky and soldiers at sunset.
Investing Articles

Up 325% in 5 years! But are BAE System shares still a no-brainer buy?

BAE Systems shares would have been a brilliant buy five years ago. But could they still offer excellent returns if…

Read more »

Investing Articles

How much do you need to invest each month into FTSE 100 shares to aim for a million?

Simply by putting a few hundred pounds a month into FTSE 100 shares, how might someone aim to become a…

Read more »

Close-up as a woman counts out modern British banknotes.
Investing Articles

£10,000 invested in BAE shares at the beginning of 2026 is now worth…

Paul Summers tips his hat to those who invested in BAE Systems shares when markets opened back up in January.…

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

What size ISA do you need for £250-a-week retirement income?

Harvey Jones outlines the advantages of investing in a Stocks and Shares ISA rather than leaving money in cash, and…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

£5,000 invested in Legal & General shares 5 years ago is now worth…

Harvey Jones crunches the numbers to show how much an investor would have earned from Legal & General shares lately,…

Read more »

Investing Articles

Just check out the latest bumper forecasts for Lloyds, NatWest and Barclays shares

Harvey Jones says Barclays shares have had a terrific year and there could be more action to come. So what's…

Read more »