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.

Turning an empty ISA into a tax-free second income of £30k a year!

Using a Stocks and Shares ISA to invest for a second income has notable advantages. Here’s how our writer would target £2,500 a month in dividends.

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.

There are several ways to invest for a second income, ranging from peer-to-peer lending to buy-to-let properties. Each strategy has potential risks and rewards. Regarding my own investments, I choose to buy dividend shares in a Stocks and Shares ISA.

With a £20k annual allowance on offer, the ability to invest small regular sums, and tax-free treatment on capital gains and dividends, I think an ISA is an excellent vehicle for me to use in pursuit of my passive income goals. So, here’s how I’d aim for £30k in annual dividend payments starting from scratch.

XXX

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.

Tax-free investing

Perhaps the most significant advantage of ISA investing is not needing to worry about HMRC. Tax optimisation is a key consideration for investors and, under the current rules, investments sheltered within the ISA wrapper don’t attract tax in perpetuity.

Viewed through this prism, using an ISA has considerable benefits compared to other methods of investing for a second income. For instance, buy-to-let properties have various tax implications.

Plus, being a landlord is less passive than owning a dividend portfolio. Ideally, I’m looking for a relatively hands-off approach to my investments. An ISA offers this.

Targeting £30k in dividends

So, is it possible to secure £30k in annual dividends starting with zero? Yes, I believe so — but it won’t happen overnight.

I’m a long-term investor. My second income goal is a long-term aspiration. That’s because time is arguably my greatest ally in achieving good returns. Not only does a long investment horizon help to mitigate risks posed by short-term volatility, but it also allows me to harness the power of compound returns.

To illustrate this, imagine I could afford to invest £20 a day and my portfolio grew at an 8% compound annual rate from capital gains and dividend reinvestments. That’s similar to the FTSE 100‘s historic average over long time periods.

If I secured a 4% yield across my stock market holdings, I’d need a portfolio worth £750k. On my modelling assumptions, I’d earn £30k in annual dividend income in less than 28 years.

To achieve this, there are many Footsie dividend stocks I could invest in. Some good examples include:

FTSE 100 stockDividend yield
Barclays4.4%
Glencore7.2%
Legal & General8.3%
National Grid5.2%
Unilever3.7%

Risk and reward

Although dividend investing has significant potential rewards, there are possible pitfalls too. Companies can cut or suspend dividend payments. The stock market may deliver lower future returns than it has done in the past. The tax-free ISA rules could change.

All of these factors would affect my neat calculations, potentially requiring higher contributions to meet my £30k tax-free income target or a longer time horizon to allow my investments to compound further.

However, by diversifying my positions across different companies and sectors, I won’t be overly exposed to any single business. And, I’m generally optimistic about the stock market’s future. After all, it’s likely firms will continue to innovate and grow.

If I avoided dividend stocks altogether for fear of the future, I’d miss out on potentially significant rewards. I’m not going to pass on that opportunity, so I’d strive to invest as much as I can afford in an ISA as soon as possible.

Charlie Carman has no position in any of the shares mentioned. The Motley Fool UK has recommended Barclays Plc and Unilever Plc. 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 »