How much would a Stocks & Shares ISA investor need for a £3,000 monthly second income?

Looking for ways to make a healthy four-figure second income? Here’s one proven path that ISA investors might want to consider.

| More on:

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.

Storytelling image of a multiethnic senior couple in love - Elderly married couple dating outdoors, love emotions and feelings

Image source: Getty Images

With a tax-efficient Individual Savings Account (ISA), any of us can significantly enhance our chances of making a big second income in retirement.

Here’s one way a person can try and build a £3,000 passive income with tax-free ISA accounts.

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.

Think carefully

The first thing to say is that there’s no blueprint to investing or saving. We all have different short- and long-term investment goals, as well as varying attitudes to risk and unique sets of financial circumstances.

That said, there are some cast-iron guidelines for investing that some ignore at their peril.

One is that saving predominantly in Cash ISAs is unlikely to make most of us a second income for a comfortable retirement. Put simply, our money may be safe in such an account but the returns one makes are likely to be insufficient, based on most people’s circumstances.

Targeting a £3k monthly income

Let’s say an investor has £514 spare each month. That’s the average amount that Britons currently save or invest, according to financial services provider Shepherd’s Friendly.

If they invested that in a 4%-yielding Cash ISA they would, after 30 years, have £356,741 sitting in their account. Based on a 4% annual drawdown rate, that would give them an income of £14,270, or £1,189 a month.

As mentioned, such income is guaranteed and safe. But even with the State Pension added, this person is unlikely to have the £43,100 that the Pensions and Lifetime Savings Association (PLSA) says that people need to retire comfortably.

In order to hit this threshold, an ISA investor would need a balance of £900,000 or thereabouts by the time they retire.

Based on that same 4% drawdown rate, this £900k balance would provide an average monthly income of £36,000. With the State Pension added in, that PLSA target of £43,100 could be quite achievable.

This could be achieved by investing in shares that provide an average annual return of 8.8% in a Stocks and Shares ISA.

Eventual returns.
Eventual returns based on an 8.8% annual return. Source: thecalculatorsite.com

Investing in funds

That 8.8% return is achievable, in my opinion, based on the proven long-term rates of return of UK and US shares.

The FTSE 100 and S&P 500 have delivered annual average returns of 7% and 11%, respectively. If this continues — which unlike a Cash ISA is not guaranteed — that £514 invested equally across a tracker fund for each index would net an investor that magic £3k monthly second income.

The iShares Core S&P 500 ETF (LSE:CSPX) is one such fund that investors can consider today.

With an ongoing charge of 0.07%, it’s the cheapest S&P-based ETF currently available in the UK. When combined with a Stocks and Shares ISA, it could save investors a huge wad of cash by eliminating unnecessary fees and taxes.

Investing in any fund is riskier than holding cash. However, by investing in 500 different companies, products like this can help investors spread risk effectively while also chasing those superior returns.

In this case, individuals reduce risk with hundreds of different companies spanning many geographies and industries. This doesn’t mean the fund can’t decline during economic downturns. But it can minimise volatility and produce a smooth and solid return over the longer term.

It’s why I hold an S&P 500 fund in my own ISA.

Royston Wild 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

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Warren Buffett didn’t retire early. But could his investing wisdom help you do so?

Warren Buffett's wisdom from decades of stock market investing is actionable even for a modest investor who simply aims to…

Read more »

Young female hand showing five fingers.
Investing Articles

5 compelling investment ideas for a Stocks and Shares ISA in 2026

Edward Sheldon discusses some ideas to consider for a Stocks and Shares ISA and highlights a UK stock that could…

Read more »

Man writing 'now' having crossed out 'later', 'tomorrow' and 'next week'
Investing Articles

Is this the best time to buy shares in a long time?

Earlier this week, Bill Ackman stated on X that this is the best time to buy shares in a long…

Read 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.
Investing Articles

£1,000 buys 35 shares in an incredibly reliable FTSE 100 dividend stock

Despite falling 72% from their highs, shares in this FTSE 100 company have been an incredibly reliable source of dividend…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

This is what Warren Buffett has to say about passive income — and I’m listening!

While searching for new ways to earn passive income, our writer takes to heart sage advice from the Oracle of…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

2 excellent ETFs to consider buying for an ISA in April

Ben McPoland highlights a pair of top ETFs that together offer high-growth potential and an attractive level of passive income.

Read more »

Engineer Project Manager Talks With Scientist working on Computer
Investing Articles

1 of the top UK growth stocks to consider buying in April

A high-quality business at an unusually low valuation makes a UK small-cap one of the top growth stocks to look…

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

2 shares that could surge in a stock market recovery…

We could experience a stock market recovery in Q2 with predictions markets pointing to an end to hostilities in the…

Read more »