Dr.Spouse on Instagram: "If you start early, your child can build real wealth over time through the power of compound interest. Here’s an example based on a 7% average annual return, which is roughly in line with the long-term performance of the U.S. stock market: • $1,000 invested at birth • $500 added each birthday • $250 per month until age 18 By age 18, this can grow to around $140,000. If they continue investing $250 per month after 18, that could grow to approximately $1.5 million by age 4