How much in a Stocks and Shares ISA could earn me £500 of passive income each month?

Christopher Ruane does the maths and explains how he’s trying to generate hundreds of pounds per month in passive income from his Stocks and Shares ISA.

| 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.

Two elderly people relaxing in the summer sunshine Box Hill near Dorking Surrey England

Image source: Getty Images

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.

An ISA can be a good way to generate passive income. Thanks to dividends paid by the companies in my Stocks and Shares ISA, I can earn passive income.

I have scoured the market to try and find what seems like the best Stocks and Shares ISA for me. After all, I do not want to earn passive income in the form of dividends only to end up using a lot of it to pay fees on my ISA!

Setting a target

How much passive income I can earn from my ISA depends on two things: how much I invest and the average dividend yield I earn.

The average dividend yield is not fixed. After all, a company can cut or increase its dividend. So, even if I buy a share today that yields 9.2% — such as Legal & General (LSE: LGEN) — that does not mean that it will keep yielding 9.2%.

Indeed, Legal & General aims to grow its dividend per share by 2% annually in coming years. But it has also cut its dividend before, as happened after the 2008 financial crisis.

At 9.2%, Legal & General’s dividend yield is far above the FTSE 100 average of 3.6%. But I reckon that by investing in a mixed portfolio of blue-chip shares like Legal & General, I could realistically target a 7% average dividend yield right now without moving outside the FTSE 100 when hunting for shares to buy.

At that level, earning £500 per month (£6,000 annually) would require almost £86,000 invested in my Stocks and Shares ISA. Not only is that a lot, it is well above my annual ISA contribution allowance.

Investing for the long term

So, I take a multi-year viewpoint on setting up passive income streams. As well as contributing to my ISA regularly over time, I also try to increase its value by compounding dividends.

Even with a £20k lump sum, if I compound that at 7% annually, after 21 years I ought to have the amount I need in my ISA for a 7% yield to equate to over £500 per month in dividends.

If I keep adding to my ISA over time, I could speed that process up. That is what I am doing.

Finding shares to buy

What attracts me to a share like Legal & General for such a plan?

After all, its profits over the past couple of years have been smaller than in the years before that – and the share price is down by a quarter in the past five years.

The weaker profits do concern me and one risk I see is a weak economy hurting investment returns, potentially leading some policy-holders to switch providers. That could hurt profits.

But Legal & General has a lot of what I look for when hunting for shares to buy for my ISA.

It operates in an area I expect to benefit from strong long-term customer demand. The firm has competitive advantages, from its well-known brand to an entrenched customer base. I feel I understand the business and so can assess it.

Plus, crucially, it has proven its ability to generate excess cash – and willingness to use some of that cash to fund dividends.

C Ruane has positions in Legal & General Group Plc. 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

Arrow symbol glowing amid black arrow symbols on black background.
Investing Articles

£5,000 invested in the FTSE 100 a year ago is now worth…

The FTSE 100 has set a new all-time high this month. Over the past year, its performance has been strong.…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

Could 4,692 shares in this quality REIT net me a £1,000-a-month second income?

A 5.3% yield, monthly dividends, and an outstanding growth record. Should UK investors looking for a second income take a…

Read more »

Two white male workmen working on site at an oil rig
Investing Articles

Up 13% in just 1 month, could Chevron stock have further to run?

Chevron stock has moved up in the past month -- and over the past few years. It also has an…

Read more »

Night Takeoff Of The American Space Shuttle
Investing Articles

Up 23%! What on earth’s going on with the BAE Systems share price?

Despite it only being mid-January, the BAE Systems share price has proven this writer wrong so far in 2026. Why…

Read more »

Two employees sat at desk welcoming customer to a Tesla car showroom
Investing Articles

Here’s what would have to happen for me to buy Tesla stock

Our writer likes the Tesla business but is not yet ready to buy its stock. What would have to happen…

Read more »

Investing Articles

Is 2026 a once-in-a-decade chance to generate passive income AND growth?

Building a passive income with stocks that generate dividends and growth can be rare, but Ken Hall wonders if 2026…

Read more »

Investing Articles

A once-in-a-decade chance to grab this brilliant 8%-yielding dividend share?

Harvey Jones says this FTSE 100 dividend share is at similar levels to a decade ago, and now could be…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing Articles

How much passive income could a £20,000 Stocks and Shares ISA earn over 20 years?

How big a money spinner can a Stocks and Shares ISA be when it comes to passive income? Christopher Ruane…

Read more »