Hillcrest's Money Market Account at 5.22% ($500K+)

Hillcrest Bank is building a good reputation as a money market rate leader for large balances. It continues to raise rates on its Index Money Market account. The highest APY is 5.22% for balances over $500K. For more reasonable balances of $50K the new APY is 4.91%. Below shows the full list of rate tiers:

APY   Interest  Min balance
4.33%   4.25%   $10,000 
4.59%   4.50%   $25,000 
4.91%   4.80%   $50,000 
5.06%   4.95%   $250,000 
5.22%   5.10%   $500,000 

I first reported on Hillcrest in January when its $50K balance rate tier hit 4.54% APY. Its highest tier broke 5% in early February.

A couple of people are describing their experience with Hillcrest Bank on this FW thread. A few important points about Hillcrest is that it's open to those in any state and there's a $10 per month charge when balance falls below $10K.