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

Image source: Getty Images

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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.

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.

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

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

Investing Articles

Here’s why I’m waiting for a lower Rolls-Royce share price to buy

After a storming couple of years for the Rolls-Royce share price, this writer explains why he's holding off on making…

Read more »

Investing Articles

Could this FTSE 100 stalwart turn my Stocks and Shares ISA into a passive income machine?

Tesco has been a resilient part of the FTSE 100 since 1996. But should Stephen Wright look to make it…

Read more »

Number three written on white chat bubble on blue background
Investing Articles

These are my top 3 defensive shares to buy in 2025!

Mark Hartley considers three shares he feels could provide stability if markets are volatile -- and if he wants to…

Read more »

Investing Articles

After rising 2,081%, has Nvidia stock peaked?

Our writer likes the chipmaker's business but is less enthusiastic about the current Nvidia stock price. Here's how he's approaching…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

This UK share is already up 27% in 2025! I think it could go even higher

The second upbeat trading update in under a month has sent this UK share higher today. Our writer explains why…

Read more »

Investing Articles

How much would an investor need in a Stocks and Shares ISA to earn £2,000 a month in passive income?

UK residents can use a Stocks and Shares ISA to build tax-free income. Dr James Fox details a stock that…

Read more »

Road trip. Father and son travelling together by car
Investing Articles

£20,000 invested in Tesla shares just 3 months ago is now worth…

Tesla shares have been on an absolute tear in recent months. Is it time for this Fool to just hold…

Read more »

Investing Articles

If a 30-year-old put £150 a week in S&P 500 shares, here’s what they could have by retirement

A regular investment in the S&P 500 index could help a 30-year-old build a massive multi-million pound portfolio. Ben McPoland…

Read more »