How I plan to invest £300 a month in UK shares for a passive income of £20k

Want to retire early? It really is possible to do so by researching thoroughly and investing regularly in UK shares, says Harshil Patel.

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.

Everybody has different financial goals. Some are looking to supplement their pensions, some to retire a little earlier than they otherwise could. And some aim to create enough passive income to retire very early. Any of these goals can potentially be achieved by investing in UK shares.

The full UK State Pension currently provides just £175.20 per week of retirement income. That’s £9,110 annually. The age at which individuals can claim their state pension is currently 66 and is set to rise to 68 between 2044 and 2046.

Rising life expectancies combined with a smaller working population are likely to add pressure to State Pension funding. This could result in a further rise in the state pension age.

I’d rather not have to rely on the state in my retirement. To provide an additional passive income for life, I’ll need to build a suitably-sized investment pot. I plan to do so by investing in a selection of good-quality UK shares.

How much to invest?

First I’d need to calculate how much passive income I’d need. As an example, let’s say I require £20,000 per year. Next, I’d estimate when I want to start withdrawing an income from my investment. As an early investor, I assume I have 35 years before I want to supplement my pension.

I calculate that I’d need a total investment pot of £500,000 to be able to withdraw a £20,000 income. This is calculated using a commonly used safe withdrawal rate of 4% — that is, the maximum a retiree can withdraw every year without running out of money.

Although £500,000 may seem like a large amount, when I have many years for my investment to grow, one might be surprised how small an investment is required. My calculations suggest that I’d only need to invest £300 per month to reach this goal.

To reach this figure, I assume my investment in suitable UK shares achieves the long-term average stock market return of 7% per year. However, I believe that by learning more and investing wisely, it’s possible to return a far greater return. I’d say that an annual investment return of 10%-15% is quite achievable.

Over a long period like 35 years, the magic of compounding really can significantly enlarge the total investment pot. For example, at a 10% annual return, the investment pot could grow to over £1m instead.

Or put another way, it would be possible to build a £500,000 pot eight years earlier. Thus enabling me to have a £20,000 passive income in 27 years instead of 35 years.

How UK shares can boost investment returns

UK shares include companies of varying types and sizes. I’d say it’s worth considering diversifying investments across small-cap, mid-cap, and large-cap stocks.

By researching UK shares in sources such as The Motley Fool, I like to find companies that demonstrate growing earnings, a strong return on capital, stable cash flows, and a resilient balance sheet.

Stable and established large-cap stocks might include Persimmon, Unilever, and Diageo.

Growing mid-cap stocks could include Volex, Yougov and Strix.

And cheap small-cap stocks might include Sylvania Platinum, Somero Enterprises, and SCS.

Harshil Patel owns shares in Strix Group, Persimmon, Volex and YouGov. The Motley Fool UK has recommended Diageo, Somero Enterprises, Inc., and Unilever. 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

Up 50% in a year! Now check out the intriguing BP share price forecast for the next 12 months

The BP share price is up one day, down the next, as geopolitical uncertainty rattles the FTSE 100. Harvey Jones…

Read more »

Investing Articles

Is now the perfect time to buy high-yield FTSE 100 dividend shares? 

Harvey Jones says UK dividend shares have a brilliant track record of delivering income and growth, and he can see…

Read more »

Bronze bull and bear figurines
Investing Articles

At 7,000 points, the S&P 500 looks bloated. How should investors navigate this market?

AI-hype may have ballooned the S&P 500 into the mother of all bubbles – but only time will tell. For…

Read more »

Smart young brown businesswoman working from home on a laptop
Investing Articles

How £100 can start a portfolio of UK stocks

Whether it’s building wealth or earning passive income, UK investors might be surprised at what £100 a month in stocks…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

How £16,000 can generate a second income in a Stocks and Shares ISA

Stephen Wright explains how UK investors can target an immediate £1,224 annual second income from UK dividend shares with a…

Read more »

Bronze bull and bear figurines
Investing Articles

This crazy growth stock is up 97% inside 2 months in my ISA!

Hims & Hers Health (NYSE:HIMS) is both an exciting and incredibly volatile growth stock. What on earth has sent it…

Read more »

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

How to target a million-pound SIPP by investing in UK shares

Harvey Jones shows how investors could target a SIPP worth a life-changing seven-figure sum, by investing in FTSE 100 dividend…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

Buying £20k of BAE Systems shares could give me a £360 income this year!

Looking for the best dividend stocks out there? Royston Wild explains why BAE Systems shares are worth considering.

Read more »