David Jagielski, The Motley Fool

Wed, Jun 18, 2025, 3:48 AM5 min read

• Babies have a big advantage as investors: time.

• Over a period of 65 years, an investment could grow to around 500 times its original value, assuming the market produces average returns.

• A $1,000 investment for a newborn today could result in hundreds of thousands of dollars for them by the time they are 65.

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President Donald Trump is pushing legislation that would provide newborns with $1,000 in a savings accounts. It's an intriguing idea, and when you consider the effects of compounding and long-term investing, it's not hard to see how such an account could grow significantly in the long run if it's invested in the right way.

The big benefit newborns have is time. Unlike most investors, who may have 20, 30, or even over 40 years until they retire, newborns have even longer. Below, I'll look at how much a $1,000 investment over a period of 50-plus years could grow.

When you're looking at investing for the very long haul, an exchange-traded fund (ETF) makes a lot of sense. As great of an investment as a stock like Nvidia has been recently, it's impossible to forecast how it may perform over the next 50 years. The benefit of ETFs -- which owns shares in lots of stocks -- is that they will rebalance over time and adjust according to which stocks are doing well and which ones aren't. ETFs that track the S&P 500 stock index can be particularly attractive.

The S&P 500 is a collection of the top 500 stocks that are listed on U.S. exchanges. The index has averaged an annual return of 10% over the long term, though that includes years when it went up and years when it went down, as well as lots of nerve-wracking volatility along the way. Yet investing is enticing. Consider that an investment today would grow to more than 490 times its original value after 65 years of compounding, assuming a 10% annual growth rate. That means investing just $2,041 today would be enough to end up with a portfolio worth at least $1 million after such a long time frame, in this optimal scenario.

There are never guarantees when it comes to future returns, however. The growth rate may slow down, and your investment could be down when you need it. But oftentimes, investors are better off simply investing in the broad index than trying to pick individual stocks. It may not be as exciting as picking stocks yourself, but it's a simple way for you to grow your wealth. One fund that you can invest in that tracks the index is the SPDR S&P 500 ETF (NYSEMKT: SPY).