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 to invest £180 per week in an ISA to target a £9,343 second income

By investing less than a couple of hundred pounds each week into an ISA, this writer thinks he could build a significant second income. Here’s how.

| More on:
Smiling white woman holding iPhone with Airpods in ear

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.

Using an ISA to generate a second income is a simple but potentially financially liberating idea. After all, I could stuff a Stocks and Shares ISA with juicy dividend payers then sit back and hopefully watch the money roll in.

Turning an ISA into a goldmine

My first move would be to set up a Stocks and Shares ISA.

XXX

Next, I would prepare to make a regular weekly payment of £180 into it. It is important not to get too fixated on the number. I could invest on a monthly basis instead, and put in more or less depending on my financial circumstances. The point is simply to get into the habit of making regular contributions to my ISA.

Sticking with the £180 as an example, putting that in an ISA each week would give me £9,360 per year to invest.

How compounding dividends can help build wealth faster

But I could invest more money without even upping my regular contributions.

How? By using any dividends I receive.

That is known as compounding. While billionaire Warren Buffett is a very successful investor, his company pays no dividends. That is because it puts the money it earns back into making more money.

Now I realise that may sound like I am missing the point of building a second income. Why put money into the ISA regularly, but take none out?

Actually, I would take it out — but not just yet.

Imagine I invested £180 per week at an average compounded growth rate (thanks to dividends) of 7% each year. After a decade I would already be generating £9,343 annually in dividends from my ISA. I could keep on compounding, or choose to start drawing the passive income at any stage.

Finding income shares to buy

That may not sound complicated. It does not need to be. Indeed, simplicity is the point of earning passive income.

But one thing that could affect my results for better or for worse is the shares I buy in the hope of hitting my 7% yield target (which is well above the average yield of the FTSE 100 right now, although in today’s market I still think is a reasonable goal).

I would invest in a range of different shares, as even the best run company can encounter unexpected difficulties.

Turning the theory into practice — and pounds!

An example of the sort of share I own partly for its passive income potential is Legal & General (LSE: LGEN).

With a yield of 9.2% (yes, 9.2%), the FTSE 100 financial services firm blasts past my target. Its policy is to grow the payout per share every year – currently by 5% and from next year by 2% annually.

Something it is important to understand when buying income shares is that no dividend is ever guaranteed and that includes Legal & General’s. It cut its dividend during the last financial crisis. If another economic storm leads policyholders to withdraw funds, hurting the firm’s profits, I reckon the same could happen again.

But with a large potential market to address, big customer base, well-known brand, proven business model and track record of cash generation, it is the sort of dividend share I like to own.

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 »