At CIT Bank, apply for a CIT Bank Savings Builder Savings Account and earn up to 0.50% APY. That's 10X the national average.* Features To keep earning the highest interest rate, deposit a $100 or more single deposit per month, or for high balance savers maintain a balance of $25,000 or more. A minimum deposit of $100 is required to open an account. *As of 11/4/2020, the national average APY for a savings account is 0.05%, according to FDIC statistics.