Zions Bank has at least two Internet-only, high-yield bank accounts. One is the High Yield Checking account, the other is their Money Market account.
High Yield Checking Account
This
account, at the time of writing, has three balance ranges. A balance of
$2,500 - 19,999.99 pays 3.05% APY; $20,000 - $99,999.99 pays 3.77% APY;
$100,000 and up pays 4.18% APY. The minimum opening deposit is $100,
and there are a fair number of features: unlimited check-writing, free
Check Card, ATM deposits and withdrawal (as well as online account
access), overdraft protection (with credit approval), free Internet
Bill Pay Service, free Internet Banking.