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 I’d aim to transform an empty ISA into a £7,000 second income!

Many of us invest for a second income. Here, Dr James Fox explains why regular savings and discipline are the key to our passive income goals.

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop

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.

Many Britons find the idea of generating a second income daunting, especially with the demands of daily life. However, it’s important to emphasise that achieving this goal is entirely feasible with a disciplined approach and a commitment to regular savings.

By setting aside a portion of our earnings and investing wisely, individuals can gradually build a second income stream over time, offering financial stability and growth opportunities for the future.

XXX

It shouldn’t be daunting

Starting to invest shouldn’t be daunting, even if I don’t have a substantial amount of capital to begin with. The key is to establish a disciplined approach that includes regular savings.

By consistently setting aside a portion of my income and directing it towards investments, I can gradually build a portfolio over time. This approach focuses on long-term financial discipline and the power of compounding, allowing me to grow my investments steadily.

It’s not about how much I start with. It’s about the consistency and commitment to saving and investing over the long run that can ultimately lead to financial growth and security.

The chart below highlights the impact of saving £200 a month, excluding the positive impact of interest. After 20 years of putting aside £200 a month, I’d have £48,000.

Created a thecalculatorsite.com

Sensible investing

To build a portfolio over time, I must understand the importance of consistency and the potential of compound returns.

Regularly saving and investing, even small amounts, can add up significantly over the years. However, it’s not just about blindly pouring money into the market. It’s essential to research and understand the investments I’m making.

Thankfully, there are also resources out there, like The Motley Fool, that can help me make informed decisions. These resources, which are known for simplifying complex financial concepts, can be incredibly useful.

The secret sauce

Compounding is the secret ingredient for growing my portfolio over time. When I reinvest the returns I earn from my investments, those returns start to earn returns of their own. It’s like a snowball effect that can significantly boost my wealth.

For example, if I invest £200 a month and achieve an average annual return of 7%, I’ll have nearly £100,000 in 20 years. That’s the power of compounding. The longer I stay invested and let my money work for me, the more impressive the results will be.

So I’m not just saving and investing for today, but for my future self. With patience and discipline, I can harness the incredible growth potential of compounding and watch my portfolio steadily expand over the years. It’s a strategy that aligns perfectly with my long-term financial goals.

Created at thecalculatorsite.com

The second income

The above figure, £100,000, is just an example, and there are so many variables. These include time, rate of annual return, and the size of my contributions. Using the above assumption of 7% yield, my portfolio could generate around £7,000 a year as a second income.

However, it’s essential to remember that stock market returns can fluctuate, and there are no guarantees. The actual income may vary depending on the performance of the investments within my portfolio.

James Fox 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

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 »