How I’d build a second income to target a 20-year retirement date

What might the process look like to start from scratch and build a second income that might allow me to retire in 20 years?

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.

The words "what's your plan for retirement" written on chalkboard on pavement somewhere in London

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.

Let’s say I wanted to retire 20 years from now. I’d like to quit work and live off a second income for the rest of my days. I’ll also assume I have no pension, income or savings whatsoever.

In short, I’d have two decades to build a nest egg big enough to provide consistent passive income to last me for retirement. 

Building this kind of wealth in such a small amount of time is no easy task. So let’s dive into an investing strategy that might help me reach such an accelerated retirement date. 

Firstly, let’s address the ‘investing timeline’ here. As a rule of thumb, a typical timeline is 30 years. Three decades is plenty of time to earn big money through investing, while also being short enough to fit into an average person’s career.

One step further

I could get a grip on my finances at 25, invest for so many years, and then retire at 55. That sounds like a pretty good deal to me. I can see why so many people divert excess savings to this goal even if they have a pension already. 

But I’m aiming to take this one step further. I want to shave a decade off. In my above scenario, I’d retire at the age of 45 instead. Who doesn’t like the sound of that? 

There’s a problem, however. Over 30 years of investing, an outsized amount of the wealth is generated in the final 10 years. 

For example, let’s say I put £1,000 to work at 10% average returns. By the 20-year mark, my money has climbed to £6,728. By the 30-year mark, £17,449. Over half of all the investing returns come in the last third of the process. 

I think this highlights the difficulty of reducing an investing timeline. For those of us on average salaries, we need the full 30 years.

Another strategy

Is that it then? Is it time to give up and abandon the dreams of early retirement? Well, perhaps not. There are two main ways to counterbalance the effect of a shortened investing timeline. 

The first, and most obvious, is to funnel in more money. The more I save and invest, the bigger the second income I can create. Sadly, the advice of ‘just make more money’ isn’t particularly useful to most of us. 

Another strategy is to pursue better investments. Rather than putting my money in safe index funds or blue-chip shares that might offer average returns, I could buy high-quality or underpriced stocks to target a better return. 

Build wealth

I wouldn’t need to find the next Apple or Amazon either. As Warren Buffett says, even a 1% difference in return makes “an enormous difference in how much money you’re going to have in retirement.”

Over a 20-year investing timeline, an increase from 10% to 11% returns doesn’t give me 1% more money. It’s actually 19.8%. 

With prudent stock picking, I could build wealth faster and target my earlier retirement date. This is one reason why anyone might want to take an active approach to investing.

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.

John Mackey, former CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool’s board of directors. John Fieldsend has positions in Apple. The Motley Fool UK has recommended Amazon and Apple. 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

Dividend Shares

2 infrastructure dividend shares with yields of 7% or higher

Jon Smith outlines two dividend shares from a sector that boasts high yields at the moment -- but there are…

Read more »

Investing Articles

2 FTSE 100 growth shares that could shine in 2025

Paul Summers picks out two FTSE 100 growth shares that, despite performing very differently in 2024, he thinks could end…

Read more »

Investing Articles

My top 2 stock market predictions for 2025

This writer didn’t receive a crystal ball for Christmas, but he still has a couple of stock market predictions for…

Read more »

Investing Articles

3 companies that could emulate Nvidia stock’s success in 2025

Nvidia stock has generated market topping growth over the past two years. But investors need to be asking themselves, who…

Read more »

Runner standing at the starting point with 2025 year for starting in new year 2025 to achieve business planing and success concept.
Investing Articles

Here’s my plan for maximising the returns from my Stocks and Shares ISA in 2025

After a good 2024, Stephen Wright has two key ideas he wants to implement in his Stocks and Shares ISA…

Read more »

Investing Articles

3 key FTSE 100 stock updates to watch for in January

My 2025 investing focus is on key FTSE 100 stocks in key sectors, and we won't have very long to…

Read more »

Investing Articles

Why the Diageo share price fell 10% in 2024

The Diageo share price fell 10% last year. But Stephen Wright thinks the stock market's being too pessimistic about a…

Read more »

White female supervisor working at an oil rig
Investing Articles

Why the BP share price fell 16% in 2024

Oil prices have been falling since April causing BP shares to do the same. But Stephen Wright thinks there’s much…

Read more »