How to transform a £10k ISA into £5k of annual passive income

Jon Smith talks through the process of tweaking an existing Stocks and Shares ISA into a dividend passive income generator for the future.

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.

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.

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.

Image source: Getty Images

A Stocks and Shares ISA is a great home for long-term investments. Over 3.5m of us have an ISA, which can be used for capital growth or income generation. With the rise in inflation and the cost-of-living crisis, many are looking for passive income to help ease pressures.

For investors that have an existing ISA, here’s how to hopefully flip it into a cash-generating asset.

Laying the groundwork

I’m going to assume that an example ISA has a pot of £10,000. This is from stock investments built up over the previous few years. Given that over 90% of the FTSE 100 companies currently pay out a dividend, it’s logical that most ISA’s will already be providing the investor with some form of passive income.

The FTSE 100 average dividend yield is 3.64%, so to keep the numbers easy I’m going to base the current annual income from this portfolio at £364. Clearly, this is a long way away from the £5,000 target!

Tweak the focus for new investments

The first step to transforming a normal ISA is considering where to invest new money. Each year, an investor can park £20,000 in the ISA. This will probably be split into monthly or quarterly amounts. For the new cash injections, the focus needs to be away from growth stocks and purely on income ideas.

There’s nothing wrong with growth stocks, but they often provide capital returns, generated from not paying out dividends and instead retaining the money.

Targeting above-average shares will help to pull the yield of the overall portfolio higher over time. For example, there are currently a dozen stocks in the FTSE 100 with a yield of 7%, or higher. I wrote last week about the dividend forecast for M&G and how this could have a yield above 9% for the foreseeable future.

If the next £10,000 has an average yield of 7%, then the total yield will increase from 3.64% to 5.32%.

Keeping up with regular investing

Over time, the focus on dividend stocks will help to raise the average yield on the portfolio. Yet the other benefit of regularly investing is that it increases the size of the ISA. This means that not only am I making my money work harder, but it’s compounding and generating more.

Of course, there are risks involved. Investing a set amount each month (like £500) can be difficult. In the future, unexpected expenses might cause an investor to miss out on putting money aside. Further, dividend yields fluctuate. There’s no guarantee I can reinvest dividends at the same yield as I initially had.

It’s going to take several years to reach £5,000 in annual income. From my calculations, it would take a decade to take a £10,000 ISA to that level. This would include investing £500 each month, with an average dividend yield of 6%. But, ultimately, it shows that by actively changing a strategy, a portfolio can be made to fit any need.

Jon Smith 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

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

Forget the FTSE 100 and come back after summer? Here’s my plan!

With the FTSE 100 moving around in a volatile way, should our writer just forget all about it for a…

Read more »

Young female hand showing five fingers.
Investing Articles

£20,000 invested in a Stocks and Shares ISA 5 years ago could now be worth…

The last five years have been something of a roller coaster for the markets. How would £20k in a Stocks…

Read more »

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

Stock market correction: a once-in-a-decade chance to build big passive income?

Ben McPoland takes a closer look at a high-yield passive income stock from the FTSE 250 that investors have been…

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
Investing Articles

In volatile markets, could National Grid dividends be a safe haven?

National Grid offers a dividend yield well above the FTSE 100 and aims to keep growing its payout per share.…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Investing Articles

Down 25%, are Barclays shares simply too cheap to ignore?

Barclays shares have given up a chunk of their recent gains since the Middle East powder keg ignited. Should investors…

Read more »

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

How much would someone need in an ISA to target a £1,000 monthly second income?

Christopher Ruane explains how someone could use an empty Stocks and Shares ISA to target a four-figure monthly second income…

Read more »

Investor looking at stock graph on a tablet with their finger hovering over the Buy button
Investing Articles

Are investors taking a big gamble chasing Rolls-Royce shares higher and higher?

With Rolls-Royce shares having fallen back from their peak, the temptation to see this as a buying opportunity must be…

Read more »

Cargo containers with European Union and British flags reflecting Brexit and restrictions in export and import
Investing Articles

Down 70%, is Fevertree Drinks a share to consider buying at 815p?

Fevertree reported its 2025 earnings today and the investors liked what they saw. So is this a share to consider…

Read more »