Arkham First Bank

150 E Hyde Street

Rooted in the community for generations, it's not unusual for this bank to grant generous extensions to customers, provided the debtor is of good character and making honest efforts at repayment: they never dispossess a friend or neighbor.
Saving and checking accounts are available. (Herber, Keith, et al. “H.P Lovecraft's Arkham.” Chaosium , Jan. 2003)