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? Does SoFi offer Custodial account options? How does SoFi Invest make money off of brokerage accounts? Can I combine my Automated Investing and Active Investing accounts into one? Will your site give recommendations?