Interpreted Prediction
Investing $10 a day ($3,650 in year 1, $57,000 by year 10) into a Roth IRA for only 10 years, and then making no further contributions, will lead to the portfolio growing to $249,000 by year 20, $385,000 by year 30, and $1 million by year 40, due to compounding interest (assuming approx. 10% annual returns).