Wealthfront has one of the highest APYs in the business. As of February 2023, Wealthfront offers 4.05% in interest to Cash Account customers. That means if you keep $1000 in your Wealthfront, you'll earn $40.50 in interest per year. Contrast this with the typical interest rates offered by the big banks, which are often less than half a percentage point, and the difference is stark.