What’s the minimum amount to invest? July 16, 2025 15:19 Updated Follow The minimum for a Self-Directed account is $5, and the minimum for a Robo account is $50 before the funds will be invested. Related articles Can I sell my positions on my Robo Investing account without withdrawing my money? Or, reallocate to a money market fund? Types of Investments with SoFi Invest What happens when I sell in “Dollars”? What's SoFi Plus? Can I set up a Robo account that I can transfer to my son/daughter when he/she goes to college?