How Long Does It Take to Turn $300 per Month Into $1 Million in the Stock Market? Here's What History Says.

Source Motley_fool

Key Points

  • Growing your net worth to $1 million or more can seem like an impossible task.

  • With as little as $300 a month, you can make it to $1 million with the right plan.

  • Here's how long it takes to reach millionaire status by investing in the S&P 500.

  • Motley Fool Issues Rare "Total Conviction" Buy Alert ›

You don't need to start with tens of thousands of dollars to become a millionaire. In fact, you don't necessarily need a huge monthly investment to hit that goal either. Just $300 a month can get the job done.

It won't happen quickly, though. You'll need a disciplined process in which you consistently invest each month, regardless of market conditions, and resist the temptation to sell when things get bad. If you can do this, you can turn $300 a month into $1 million.

Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia. For the first time in years, that same "Total Conviction" signal is flashing for a company 1/100th the size of Nvidia. Continue »

An older couple drinking coffee and looking off in the distance.

Source: Getty Images.

Over the past century, the S&P 500 (SNPINDEX: ^GSPC) has delivered an average annual return of roughly 10% with dividends reinvested. While nothing is guaranteed, that's a good assumption to use for U.S. stock returns in the future.

Assuming you invest $300 monthly into something like the Vanguard S&P 500 ETF (NYSEMKT: VOO), here's how long it would take to amass $1 million at different annualized rates of return.

Annual return Years to invest
6% 48
8% 40
10% 34
12% 30

Source: Calculator.net

At a 10% annual return, you'd invest a total of $122,400 over the course of those 34 years. That means roughly 88% of your account balance would have come from capital growth on your investment. That's the power of long-term compounding returns.

The process for achieving this doesn't have to be complicated either. Invest $300 a month into the Vanguard S&P 500 ETF and continue doing so for as long as you can. Increase your monthly investment over time or add pay raises and bonuses to your brokerage account, and you can hit the $1 million mark even quicker.

With enough time, the seemingly impossible is quite realistic.

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*Stock Advisor returns as of October 25, 2026.

David Dierking has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Vanguard S&P 500 ETF. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
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