How much do you need in an ISA to earn £700 passive income a month?

A passive income of £700 sounds alright, doesn’t it? But what kind of investment in an ISA is needed to start earning that amount?

| More on:

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.

Close up of a group of friends enjoying a movie in the cinema

Image source: Getty Images

A £700 passive income each month – or £8,400 over the course of a year – is a somewhat modest goal in a Stocks and Shares ISA. After all, that is not even close to minimum wage nowadays. Yet looking at common drawdown rates to achieve that goal in an ISA makes the task look daunting indeed:

  • 3% yearly withdrawal — £700 a month — £280k needed
  • 3.5% yearly withdrawal — £700 a month — £240k needed
  • 4% yearly withdrawal — £700 a month — £210k needed
  • 4.5% yearly withdrawal — £700 a month — £187k needed


Even if someone does have a six-figure sum of cold hard cashola burning a hole in their pocket, the highest rate in that list is above all current Cash ISA returns and above the average FTSE 100 dividend payout too. Is the notion of earning a sizable passive income impossible for those of us without hundreds of thousands of pounds lying around? Or could there be another way?

Get to grips

It’s no secret that good stock picking inside a Stocks and Shares ISA can supercharge total returns. But the power of compound interest over time is hard to get to grips with until you run through the numbers.

Take a popular FTSE 100 stock like BAE Systems (LSE: BA.). The defence manufacturer has been growing on the back of increased military spending. Many investors like the look of a company on the bleeding edge of state-of-the-art manufacturing.

Hold on a second! The firm pays out a dividend of just 1.78%. That’s lower than savings accounts are offering risk-free. Is it really worth investing in a stock with such a relatively low payout?

Try looking at it another way. The firm pays a dividend of 40p this year. But an investor who bought the stock in 2011 when the share price was 260p is now receiving a 17% yield on the original stake. Forecasts suggest that’s going up next year too.

Long term

In fact, BAE Systems has increased its dividend for over two decades now. Throw in the benefits of an increased share price over the period and you’ve got yourself a very handsome income stream. That’s what we mean when we talk about investing for the long term.

I’ll mention that I’m cherry-picking a good example here. Some dividend stocks are down over the same period. But I think BAE Systems serves as a good reminder that lower dividends can often win out over time. Another lesson here is that the amount needed to put in an ISA to earn passive income can be lower than initially believed.

Is it still a good stock to buy today? I think so, and think it’s worth considering. Some may be put off by the ethical considerations, and manufacturing costs are high in this country these days, but I wouldn’t be surprised if BAE Systems looks like a great stock in another 15 years.

John Fieldsend has positions in BAE Systems. The Motley Fool UK has recommended BAE Systems. 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

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

ISA or SIPP? Here’s 1 advantage and 1 disadvantage of both

SIPPs and Stocks and Shares ISAs both have potentially attractive features, as well as downsides. Christopher Ruane looks at some…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

£1,000 invested in Lloyds shares 6 weeks ago is now worth…

Lloyds shares have been on a huge run in the last couple of years. But is a 15% pullback in…

Read more »

Man smiling and working on laptop
Investing Articles

After the FTSE 100’s slump, these bargain shares are calling!

Are you on the lookout for top cheap stocks to buy? Royston Wild reveals three FTSE 100 value shares he's…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Worried about a stock market crash? Here are 2 things you should know

A stock market crash may look plausible, but it’s far from a done deal. Still, if markets do wobble, I…

Read more »

piggy bank, searching with binoculars
Investing Articles

This FTSE 100 stock soared 900% — but after a 25% crash, is the rally over?

After blowing away the FTSE 100 in 2025, this miner has hit turbulence in 2026 — Andrew Mackie investigates what’s…

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

How much do I need in an ISA for a £700 second income?

Investing in dividend shares can be a great way to target a second income from a Stocks and Shares ISA.…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

If there’s a stock market crash this week, will you be ready?

Christopher Ruane explains why he's not phased by the inevitability of a stock market crash -- but is actively preparing…

Read more »

Mindful young woman breathing out with closed eyes, calming down in stressful situation, working on computer in modern kitchen.
Investing Articles

£15,000 invested in Diageo shares 3 weeks ago is now worth…

Bad times for Diageo shares! The last three weeks have seen yet another drop, but is this a time to…

Read more »