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!

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.

How much do I need in an ISA for a £1,000 monthly passive income?

Investing in dividend-paying UK shares can help investors build up a healthy passive income stream in less time than we might imagine.

| More on:
ISA Individual Savings Account

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.

Being able to sit back and enjoy a steady monthly passive income might seem like a distant dream. But by using the advantages of a Stocks and Shares ISA, it’s something ordinary private investors like you and I can realistically target — we really can.

And why stop at £1,000 a month? According to the latest government data, there are more than 5,000 ISA millionaires in the UK. To achieve that much, you need to be a financial whizzkid, right? Well, we don’t have a demographic breakdown — but I’d wager many of those are ordinary hard-working folk like the rest of us. They just have patience and a long-term commitment.

XXX

To make things sweeter, even investors with multi-million pound ISAs still don’t have to pay any tax on any money they take out. Not a penny.

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.

So how much then?

My £1,000 monthly passive income target comes to £12,000 a year. How much I need in my ISA to earn that much depends — perhaps obviously — on the rate of return I can get from my investments.

Over the past 20 years, the average annual FTSE 100 return has come in at 6.9%. For a rate like that to get me to my annual £12,000, I’d need a pot close to £175,000. If I could invest half an ISA allowance, or £10,000, every year, and I reinvest all my dividends — I could realistically hope to get there in only around 12 years.

It all depends on how much an individual can invest, their returns, and their investing horizon. But anyone with a couple of decades of work and investment still ahead of them should be able to achieve something worthwhile.

Getting there quicker

What about bigger dividends? I have my eye on Greencoat UK Wind (LSE: UKW), with a huge forecast 11.1%. Now, some cautions right away. Firstly, a dividend can’t be guaranteed, so I’d never automatically assume I was going to get it. And the big yield is partly because the Greencoat share price has been sliding for the past few years — it’s down 29% over five years. Maybe it’ll fall further.

And there’s no profit expected for the 2025 year just ended — eyes peeled for results due 26 February.

Still, forecasts expect profit in 2026 and beyond, enough to cover the dividend comfortably. And reporting on the first half in July, the company said its “aim is to provide investors with an annual dividend that increases in line with RPI inflation“.

Sentiment swings in favour and against renewable energy is another uncertainty for investors to cope with. But if the dividend goals are achieved…

Bet on the big ones?

Am I saying we should go all-in on the biggest dividends in the hope of maximising our passive income potential? Nope, absolutely not. There’s way too much danger in that.

But can we aim to lift our potential returns by putting a proportionate amount of our investment money into high-yield stocks, as part of a well-diversified Stocks and Shares ISA? That’s a big yes for me. Greencoat’s on my ISA candidate’s shortlist.

Alan Oscroft has no position in any of the shares mentioned. The Motley Fool UK has recommended Greencoat Uk Wind Plc. 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 »