Without any investments at 40, I'd apply the Warren Buffett method to help me build wealth!

Warren Buffett can teach us how to grow wealth at any age.

A happy couple looking at an iPad feeling great as they watch the Challenger share price rise

Image source: Getty Images

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

Key points

  • Warren Buffett is one of the greatest investors of all time
  • Buffett himself attributes his wealth to compound interest
  • So here's how you can harness Buffett's principles for your own wealth journey

There are many Australians that have no investments at 40, apart from some superannuation funds, and perhaps, if lucky, a house. If you fall into this category, don't despair, there's still plenty of time to right your ship of wealth. After all, the legendary investor Warren Buffett only became a billionaire at age 50.

Today, he's worth over US$108 billion, meaning he has made 99% of his fortune after the age of 50. And his company Berkshire Hathaway is worth close to US$700 billion.

Now, I'm not saying that you too can become a billionaire in just ten years. There's only one Warren Buffett.

But we can still use his principles to harness the amazing effects of compound interest in building wealth.

Here are three Buffett principles that an investor at 40 could use:

Start at the bottom

One cannot build wealth from a position of weakness. So the first thing to do is to get your financial house in order. A good way to start might be to eliminate any unnecessary debts from your life.

Car loans, credit cards and anything that isn't borrowed against an appreciating asset (i.e. property) is kryptonite for wealth building. Get rid of the debt and stay debt free.

After this, an aspiring investor needs to make sure that they have surplus cash to be able to invest. So if you're spending more than you are making each week, fortnight or month, it's time to rectify this situation.

Building wealth starts with finding the money you can invest consistently. So maybe it's time to run a ruler through your expenses and find some savings. One could also try and boost your income.

Buffett invests judiciously. We should do the same

Buffett once said this:

I could improve your ultimate financial welfare by giving you a ticket with only 20 slots in it, so that you had 20 punches — representing all the investments that you got to make in a lifetime.

And once you'd punch through the card, you couldn't make any more investments at all… you'd really have to think carefully about what you did, and you'd be forced to load up on what you really think about. So you'd do much better.

He also once (even more famously) told us that the first (and only) rule of investing is "don't lose money".

Using these two quotes, we can conclude that all investors should be extremely thrifty with their investment dollars, and only put cash into the very best ideas.

This might be difficult for an investor who has never invested before. So there's no harm in starting out with an index fund. That's an idea Buffett has also endorsed in the past.

Be patient and stick to the plan

Harnessing compound interest is what successful investing is all about. But its effects take time and are not always obvious at first. Buffett's right-hand man Charlie Munger once said, "the first rule of compounding: Never interrupt it unnecessarily".

If you invested $30,000 into an investment returning 7% per annum, you would only have $42,529 after five years. But after 15, you'd have $85,468.

If you invested an extra $200 a month, that would grow to $148,861. Double it to $400 a month, and you'd be looking at $212,253.

Investing doesn't work if you are constantly dipping in and out of markets or taking your profits to go and buy a new TV. You need to have a plan and stick to it over a long period of time.

That's what Buffett has done, and that's what we all should do to harness the power of compound interest by investing in shares.

Motley Fool contributor Sebastian Bowen has positions in Berkshire Hathaway (B shares). The Motley Fool Australia's parent company Motley Fool Holdings Inc. has positions in and has recommended Berkshire Hathaway (B shares). The Motley Fool Australia's parent company Motley Fool Holdings Inc. has recommended the following options: long January 2023 $200 calls on Berkshire Hathaway (B shares), short January 2023 $200 puts on Berkshire Hathaway (B shares), and short January 2023 $265 calls on Berkshire Hathaway (B shares). The Motley Fool Australia has recommended Berkshire Hathaway (B shares). The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on How to invest

Humorous child with homemade money-making machine.
How to invest

How I'd fill an empty ASX share portfolio to build a $500 monthly passive income machine

Building an ASX passive income portfolio simpler than you may think.

Read more »

A smiling woman with a handful of $100 notes, indicating strong dividend payments
How to invest

How to realistically turn a $7,000 ASX share portfolio into $75,000 by 2030

The Australian share market is a great place to grow your wealth. Over the years, countless Aussies have constructed ASX…

Read more »

Happy young couple saving money in piggy bank.
How to invest

4 steps to becoming rich with ASX stocks

These are the steps I would take to grow my wealth materially.

Read more »

Person with a handful of Australian dollar notes, symbolising dividends.
Investing Strategies

Want cash like Warren? How to stack paper without ditching ASX shares

Life is about trade offs.

Read more »

five people in colourful blow up tubes in a resort style pool gather and smile in a relaxed holiday picture.
Dividend Investing

5 simple steps to earning $500 in monthly ASX passive income

Almost any investor can build a $500 monthly passive income from ASX dividend shares.

Read more »

A businesswoman on the phone is shocked as she looks at her watch, she's running out of time.
How to invest

How timing the market can cost you big dollars

And one simple way ASX investors can avoid the urge...

Read more »

Legendary share market investing expert and owner of Berkshire Hathaway Warren Buffett
How to invest

5 easy ways to invest like Warren Buffett with ASX shares

Here’s how we can imitate Warren Buffett with ASX shares.

Read more »

Businessman working and using Digital Tablet new business project finance investment at coffee cafe.
How to invest

If I'd put $20,000 into the ASX 200 at the start of 2024, here's what I'd have now

Was it a good idea to invest in the share market this year?

Read more »