We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

How much does an investor need in an ISA to target £1,500 in monthly passive income?

Paul Summers reckons a bit of commitment and discipline can help generate a wonderful passive income stream for retirement.

| More on:
Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together

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.

When it comes to creating a passive income stream for retirement, a Stocks and Shares ISA is an excellent tool. After all, any profits made or dividends received in this sort of account are free from tax. That could make a huge difference when it’s time to ditch the office for good.

But how much would someone need to accumulate to aim for £1,500 every month (£18,000 a year) using the 4% ‘safe withdrawal’ rule?

XXX

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

Realistic goal

The answer to that question is £450,000. I know, that’s a huge number. But I reckon it’s achievable for someone willing to put their money to work in the stock market as early as possible and compound the value of what they own over time. Put £400 aside every month and — assuming an average annual return of 7% — our investor will have that massive pension pot in 30 years.

Now, I won’t shy away from the fact that this will all require a healthy dollop of discipline. But that’s always been the Foolish way. We invest for the long term. Think decades, not weeks, months or a year.

Then again, there’s no rule to say that an investor can’t target a higher average return and attempt to speed things up. To do this, they’ll need to take on more risk by owning a portfolio of individual company stocks. There’s no magic number but between 10 and 20 should give a good amount of diversification. This is important because there’s always a chance that a few in that group might seriously underperform.

Strong candidate

A company like Rio Tinto (LSE: RIO) could arguably make the cut. It’s one of the biggest miners around, digging up metals such as aluminium, lithium and copper from around the world. It’s also been pretty great source of dividends over time. Right now, the yield stands at 4.7% for the current financial year. That’s more than an investor would get from holding a FTSE 100 tracker fund (3%).

This is not to say that Rio is all about income. Far from it. The stock’s up almost 70% in the last 12 months off the back of strong earnings reports and rising commodity prices.

No sure thing

I rate Rio highly as a ‘buy and hold’ contender. But it’s far from a safe bet. Of course, no stock truly is. But the £120bn-cap makes its money from markets that are notoriously volatile. It has absolutely no say on the value of what it digs up. On top of this, mining is dangerous and unpredictable work.

For proof of just how tricky things can get, take a look at the behaviour of the share price in 2026 alone. At the beginning of the year, this stood at 6,000p, rising to almost 7,500p by the end of February. By mid-March, that gain was almost entirely wiped out as the USA-Iran war kicked off. It’s since recovered strongly.

Even so, the likely surge in demand for metals like copper over the next few decades as the world increasingly adopts clean energy, electric cars and other technologies suggests investors should at least consider having some exposure to companies like this.

Seen through this lens, any temporary drop might regarded as an opportunity to think about buying at a more attractive price.

Paul Summers 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

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

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

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

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »