Do you know your interest rate? We asked Americans just that, and most of them had no idea. Here's a hint: It probably starts with zero. But don't worry, a Marcus Online Savings Account has a rate 4X the national average! Marcus by Goldman Sachs, a brand of Goldman Sachs Bank USA, offers no-fee, fixed-rate personal loans, high-yield online savings accounts and certificates of deposit to help people achieve financial well-being.