Md. Code, Tax - General § 8–208

A savings bank or savings and loan association doing business outside this State may claim a credit against the financial institution franchise tax equal to the amount paid to another jurisdiction as:

(1) a tax based on savings accounts or saving share accounts bought in this State;

(2) a tax on gross receipts from business done in this State; or

(3) a tax on income derived from business done in this State.