Md. Code Ann., Tax-Gen. § 8-208 — § 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.