Is there an age requirement to open a brokerage account? February 24, 2020 18:12 Updated Yes, you must be 18 years old. Related articles How old do I have to be to open a money account or be a joint account holder? Can I combine my Automated Investing and Active Investing accounts into one? Does SoFi offer Custodial account options? Will your site give recommendations? How does SoFi Invest make money off of brokerage accounts?