Open Market Operations: The RBI directly buys or sells the securities and bills in the money market either to decrease or to increase the total volume of money.

Cash Reserve Ratio (CRR): It is the ratio of Cash reserves with the RBI kept by Scheduled banks in proportion to the Total Time and Demand Liabilities with them.

(a) Banking Department: The bank has seven offices of Banking Department
(i) Public Accounts Department
(ii) the Public Debit Office
(iii) Deposit Accounts Department
(iv) Securities Department.
(b) Issue Department:
(i) General Department,
(ii) Cash Department.
(c) Central Policy Department:
(i) Credit Planning Cell
(ii) Personal PolicyDepartment.
(iii) Administration Department.

Every country has a Central Bank. It acts as the leader of the money market, supervising, controlling and regulating the activities of commercial banks and other financial institutions.
It is the apex bank. It is the bank of Note-issue. It acts as the banker, agent and advisor to the Government. Such a bank is called the Central Bank. The Reserve Bank of India (RBI)is the Central Bank of India.

Reserve Bank of India controls money supply and credit to maintain price stability in the country. Credit is controlled by two methods. They are: .
(a) Qualitative methods. Underselective or qualitative credit control, the following weapons are used:
(i) Fixation of margin
(ii) Regulation of consumer credit
(iii) Direct action
(iv) Rationing of credit and
(v) Moral suasion.
(b) Quantitative credit control. The quantity of credit is controlled by RBI through:
(i) Bank rate
(ii) Open market operation and
(iii) Variable reserve ratio.