1.   One technique of monetary control, which amounts to a form of credit rationing, is to vary the statutory reserve ratio that banks must adhere to.

2.   Most mechanical models of the determination of the money supply assume that the banks will adhere to a constant ratio of cash reserves to deposits.

3.   The bank adheres to Islamic banking regulations banning interest on all transactions, but instead acquires shares in projects in which it invests.

4.   The bank adheres to strict Islamic laws prohibiting interest being earned on transactions, including customer loans.