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.

Here’s how I’m using a £20k ISA to target £11k+ in income 30 years from now

Is it realistic to put £20k in an ISA now and earn over half that amount every year in passive income down the line? This writer thinks so! Here’s why…

| More on:
ISA coins

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.

An ISA can be a good way to generate some passive income in the short term, by investing in dividend shares. There is no shortage of options on the London market at the moment that offer the potential for juicy earnings.

But as an investor who believes in a long-term approach to investing, I also think an ISA can be helpful when it comes to planning for retirement.

XXX

To keep things simple, let’s say I currently have a £20k Stocks and Shares ISA and plan to retire in 30 years.

Over £10,000 a year, every year – for doing nothing

Imagine I compound that at a rate of 7% annually over 30 years. That is well above the average yield for FTSE 100 shares, but I think it is achievable in the current market.

That alone would mean that, three decades from now, I would have a portfolio worth a little over £162k. At a yield of 7%, that ought to earn me £11,363 in passive income. If I simply take the dividends at that point and do not touch the capital, I could hopefully earn that amount every year.

I say “hopefully” because dividends are never guaranteed. I may suffer a cut from some shares I own, meaning I earn less. But the opposite is also true. I may earn more each year, if shares I own such as Diageo continue their decades-long habit of annually increasing their dividends per share.

Setting a strategy for a five-figure annual passive income

So, how am I going about this?

The reality sounds, perhaps, disappointingly unglamorous.

I aim to find companies that offer unique solutions in large, enduring markets. I look for firms generating far more cash than they need to keep their business ticking over. I also consider the share price and what it means for valuation, as smart investors do not overpay even for excellent businesses.

By building a diversified portfolio in my ISA of such shares (diversification matters because even great businesses can disappoint), I aim to build growing passive income streams over time.

Putting the theory into practice

So much for the concept. What about the reality?

Let me illustrate by discussing one FTSE 100 share I own, Legal & General.

Yes, it has a stellar yield well in excess of my 7% example (which, in fairness, is close to double the average FTSE 100 yield at the moment). Currently, it stands at 9.4%.

And yes, although it plans to reduce the level of annual growth in dividend per share, the company is still targeting an increase each year.

In fact, that has happened every year bar one since the financial crisis. At that point, the payout was cut. I see a risk of that happening again if the economy suddenly enters a very turbulent period, if policyholders take more money out than they put in.

But remember – my approach to investing is based on the long-term outlook.

I expect Legal & General to encounter turbulence from time to time, as befits a company that is almost 190 years old. But I am also hopeful that it will continue to merit a place in my ISA thanks to its ongoing passive income potential.

C Ruane has positions in Legal & General Group Plc. 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 »