@moneycoachdave: How $100 a Month in a Roth IRA at 18 Could Become $1.28 Million. Just in case your parents never taught you about money, this is one of the first investing moves I’d want every 18-year-old to understand. Open a Roth IRA once you have earned income, automate a small monthly transfer, and consistently invest that money into broad market ETFs you actually understand. The wild part is not that $100 a month is a huge amount of money. It’s that starting early gives your money decades to compound. How old were you when you opened your Roth IRA? #RothIRA #InvestingForBeginners #PersonalFinance #FinancialLiteracy