How much would an investor need in an ISA for a £500 monthly income?

The high yields available from some dividend stocks could make it easier for investors to meet passive income goals, as Roland Head explains.

| 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.

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.

Image source: Getty Images

Earning a passive income from dividend shares can be a low maintenance strategy to generate cash from investments.

However, there are no fixed rules about what size investment pot’s needed to generate a certain level of income. Here, I’ll look at some example scenarios, based on a target income of £6,000 a year, or £500 a month.

I’ll also take a look at a FTSE 100 dividend heavyweight with a 9.5% yield that could make a useful contribution to an investor’s income goals. For these examples I’ll assume the shares are held in an ISA, meaning that dividend income will be tax-free.

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.

How much cash is needed?

The level of income received from a share portfolio will depend on the average dividend yield of the stocks in the portfolio and the rate of dividend growth.

For a long time, the standard advice used by financial advisers has been the 4% rule. This states that if an investor withdraws 4% from their investments each year and increases this with inflation, there should be very little chance of running out of cash in a 30-year period.

I reckon that’s a useful guide for a conventional retirement, but it’s not the only option.

One alternative is to start withdrawals at a higher rate, but keep the amount fixed each year. The real value of your income will decline over time due to inflation. But having more income upfront might be useful in some circumstances.

Here are some examples of how much cash might be needed for a £500 monthly income, based on different withdrawal rates:

Withdrawal rateInvestment required
4%£150,000
5%£120,000
6%£100,000
7%£85,715

What else should an investor consider?

The withdrawal rate makes a big difference to the size of the investment pot required to hit an income target.

But there are also some other things to consider. One important thing to remember is that dividends are never guaranteed and can always be cut. Dividend safety’s important. A cut will mean a reduction in income and will often also trigger a nasty share price slide.

Safety depends on factors including a company’s profitability, spending needs and debt levels. Ultimately, the question is whether a business generates enough surplus cash each year to support its payout. If it doesn’t, then its dividend may be living on borrowed time.

A safe 9.5% yield?

One company at the high-yield end of the income market is life insurer Phoenix Group (LSE: PHNX). Shares in this FTSE 100 firm currently boast a forecast dividend yield of 9.5%.

Some investors avoid this sector because of its complex accounts. Investors have no real choice but to trust that the company’s done its sums correctly. There’ll always be a risk of surprise problems.

However, Phoenix’s cash generation and its dividend have proved reliable through some tricky times. The shareholder payout has risen from 31p in 2010 to 54p in 2024 and hasn’t been cut since the company’s 2009 flotation.

My analysis shows Phoenix’s cash generation covered its dividend comfortably last year, leaving room for some debt repayment and growth investment.

I see this as a good quality high-yield stock to consider for investors whose main requirement is a high income.

Roland Head 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

UK money in a Jar on a background
Investing Articles

A SIPP seems to offer investors free money – is there a catch?

This writer doesn't believe in magic money trees, but does see the offer of tax relief within a SIPP as…

Read more »

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

Here’s what £10,000 invested in Greggs shares a year ago’s worth now

Given Greggs large shop network and simple business formula, could owning the shares help this writer build wealth? Maybe --…

Read more »

UK coloured flags waving above large crowd on a stadium sport match.
Investing Articles

Recent BT share price performance is jaw-dropping but can it continue?

Harvey Jones is stunned by how well the BT share price has weathered recent stock market volatility. Can the FTSE…

Read more »

A senior man using hiking poles, on a hike on a coastal path along the coastline of Cornwall.
Investing Articles

Is the stock market correction a once-in-a-decade chance to target a million-pound SIPP?

After recent volatility Harvey Jones can see plenty of value FTSE 100 stocks to help investors build wealth in a…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

How to target a £10k annual income from just one year’s £20,000 Stocks and Shares ISA allowance

Today is the start of the new financial year giving us all a a fresh Stocks and Shares ISA allowance.…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Rolls-Royce shares have gone nowhere this year. Is that a warning sign?

Rolls-Royce shares stand within spitting distance of where they began the year. Has the company's long run of strong share…

Read more »

Tesla building with tesla logo and two teslas in front
Investing Articles

£5,000 invested in Tesla stock on Christmas Eve is now worth…

Tesla stock is stuck in reverse at the moment. This year, it has fallen by around 15%. Is there potential…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing Articles

2 UK dividend stocks to consider buying in April

High-quality established businesses with reliable cash flows often make for great dividend stocks. Here are two for investors to take…

Read more »