How much do you need in an ISA to aim for an extra £1,000 monthly retirement income?

Aim to secure a more comfortable retirement by investing intelligently with an ISA to build a £240,000 nest egg and unlock a chunky retirement income.

| 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.

A senior group of friends enjoying rowing on the River Derwent

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.

Having an extra £1,000 each month as part of a retirement income can make an enormous difference. It’s enough to double the current full UK State Pension, bringing a pensioner’s total passive income to just shy of £24,000.

That’s more than sufficient to exceed the minimum living requirements, putting someone on track to enjoy a more moderate retirement – including holidays, eating out, buying gifts, as well as covering the weekly shopping. At least, that’s what the Pensions and Lifetime Savings Association has estimated.

But how much money is needed inside an ISA to generate these extra earnings tax-free?

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.

Crunching the numbers

Most easy-access Cash ISAs currently offer around 3% in interest. So if the goal is to have an extra £1,000 flowing in each month, a total of £400,000 will need to be saved up. Yet with interest rates expected to fall in the coming years, pensioners might end up needing significantly more.

However, with a Stocks and Shares ISA, the story’s a bit different. Investing opens the door to potentially far more impressive returns. On average, UK income stocks generate a dividend yield close to 4%. This already reduces the required portfolio size down from £400,000 to £300,000. Yet, by being more selective, it’s possible to unlock a 5% yield without taking on excessive levels of risk. And that lowers the threshold even further to £240,000.

Building a £240,000 portfolio

Not everyone’s fortunate enough to have close to a quarter of a million tucked away. In fact, the average retirement savings for 45-54 year-olds is around £80,000, according to the Office for National Statistics. But that’s more than enough to get the ball rolling.

Starting with £80,000 and injecting an extra £500 each month at the stock market’s total average return of 8% is enough to reach £240,000 in just under nine years. And once that target’s been hit, it’s just a matter of finding higher-yielding dividend stocks to generate a reliable retirement income stream. Of course, that’s far easier said than done.

Finding quality yields

Let’s take a look at British American Tobacco (LSE:BATS) as an example to consider. At a 5.8% yield, it exceeds our target. And with a 29-year track record of hiking shareholder payouts, it certainly seems to be a consistent dividend grower.

So is this a no-brainer income stock to buy in 2025? Not necessarily. Tobacco consumption’s steadily falling. Management isn’t blind to this risk, and it’s why the company has been making a big push into alternative non-combustible products like heated tobacco and vapour.

There’s still a long way to go before these products become the primary driving force of the firm’s revenue stream. But with a sturdy balance sheet and still-predictable cash flows, management seems to have the financial flexibility to execute this strategy over time.

But whether these products can evolve to match the profitability of cigarettes remains a bit of a mystery. Early data shows that vape users are far less loyal to brands by comparison. And if British American Tobacco can’t leverage its own to generate pricing power, the firm’s impressive dividend hiking streak could come to an end.

That’s why I think investors may want to look elsewhere for retirement income investing opportunities.

Zaven Boyrazian has no position in any of the shares mentioned. The Motley Fool UK has recommended British American Tobacco P.l.c. 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

Young Caucasian man making doubtful face at camera
Investing Articles

Time to start preparing for a stock market crash?

2025's been an uneven year on stock markets. This writer is not trying to time the next stock market crash…

Read more »

Santa Clara offices of NVIDIA
Investing Articles

Nvidia stock’s had a great 2025. Can it keep going?

Christopher Ruane sees an argument for Nvidia stock's positive momentum to continue -- and another for the share price to…

Read more »

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

£20,000 in savings? Here’s how someone could aim to turn that into a £10,958 annual second income!

Earning a second income doesn't necessarily mean doing more work. Christopher Ruane highlights one long-term approach based on owning dividend…

Read more »

Road 2025 to 2032 new year direction concept
Investing Articles

My favourite FTSE value stock falls another 6% on today’s results – should I buy more?

Harvey Jones highlights a FTSE 100 value stock that he used to consider boring, but has been surprisingly volatile lately.…

Read more »

UK supporters with flag
Investing Articles

See what £10,000 invested in the FTSE 100 at the start of 2025 is worth today…

Harvey Jones is thrilled by the stunning performance of the FTSE 100, but says he's having a lot more fun…

Read more »

Investing Articles

Prediction: here’s where the latest forecasts show the Vodafone share price going next

With the Vodafone turnaround strategy progressing, strong cash flow forecasts could be the key share price driver for the next…

Read more »

Front view of a young couple walking down terraced Street in Whitley Bay in the north-east of England they are heading into the town centre and deciding which shops to go to they are also holding hands and carrying bags over their shoulders.
Investing Articles

How much do you need in a SIPP or ISA to aim for a £2,500 monthly pension income?

Harvey Jones says many investors overlook the value of a SIPP in building a second income for later life, and…

Read more »

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.
Investing Articles

Can you turn your Stocks and Shares ISA into a lean, mean passive income machine?

Harvey Jones shows investors how they can use their Stocks and Shares ISA to generate high, rising and reliable dividends…

Read more »