Discover Bank is offering 5.30% APY on their money market account with balances over $50,000. $25,000-49,999 also yields a high rate of 5.20%. This is one of the best money market rates available on the internet at the moment. Minimum of $2,500 is required to open an account, but that will only yield a relatively low rate of 4.31% APY.

Discover Bank is FDIC insured for up to $100,000.