Reaching 40 with no savings can feel confronting.
But it is not the end of the road. In fact, it can be the point where better habits, clearer priorities, and a long-term investment plan start to make a real difference.
If I were in that position, I would not try to get rich quickly. I would follow principles often associated with Warren Buffett: spend less than I earn, invest consistently, focus on quality, and let compounding work over time.

Image source: The Motley Fool
Start with the savings habit
The first step would be to create room for regular investing.
That might mean cutting unnecessary expenses, avoiding lifestyle creep, or directing pay rises and bonuses straight into investments. The amount does not need to be huge at the start.
What matters most is building the habit.
An investor who can put $500 a month into the share market is putting $6,000 a year to work. Over 20 years, that is $120,000 of contributions before any investment returns are included.
Once the habit is established, the numbers can become more powerful.
Invest like a business owner
Warren Buffett does not treat shares as flashing prices on a screen. He thinks like a business owner.
That is a useful mindset for anyone starting at 40. Instead of chasing hot tips, the focus should be on owning quality businesses with strong brands, durable earnings, and the ability to grow over many years.
On the ASX, that could mean looking at high-quality companies such as Wesfarmers Ltd (ASX: WES), REA Group Ltd (ASX: REA), or Macquarie Group Ltd (ASX: MQG).
It could also mean using broad-based ASX exchange traded funds (ETFs) to build instant diversification. This can reduce the risk of relying too heavily on one company or sector.
Let compounding do the heavy lifting
The real magic comes from staying invested.
If an investor put $500 a month into the share market and achieved an average annual return of 10%, they could build a portfolio worth more than $360,000 after 20 years.
That return is broadly in line with long-term share market averages, but it is not guaranteed. Some years will be strong, while others could disappoint.
The key is to keep going through the cycle. Selling in a panic after market falls can interrupt compounding just when future returns may become more attractive.
Foolish takeaway
Starting at 40 still leaves plenty of time.
An investor may have 20, 25, or even 30 years to build wealth before and during retirement. That is long enough for regular contributions and reinvested dividends to make a meaningful difference.
The Buffett approach is not exciting in the short term. It is built on patience, discipline, and sensible decisions repeated again and again.
For someone with no savings at 40, that may be just what is needed.