What is a central bank? Bring out the importance of a central bank by making special reference to the functions it performs.

Central Bank — A Central Bank is a banking institution which controls the banking system in a country and carries out its monetary policy. It is the apex institution of a country's banking system, owned by the Government, with the aim of serving the country's interest rather than earning profit.

Importance of a Central Bank — The importance of the central bank is reflected in the variety of crucial functions it performs:

1. Issue of Currency Notes — The central bank has the monopoly over issuing currency notes. It keeps reserves of gold, silver, etc., to inspire public confidence and to maintain uniformity in currency. This is essential for a stable monetary system.

2. Banker to the Government — The central bank acts as banker, agent and advisor to the Government. It receives and makes payments on behalf of the Government, manages the national debt and issue of government securities, and represents the Government in international monetary conferences.

3. Banker's Bank — It acts as the bank for all commercial banks. Commercial banks keep cash reserves with it and can obtain loans and rediscount bills with it. Hence, it is also called the 'lender of last resort'.

4. Credit Control — It exercises both quantitative (bank rate, open market operations, CRR, SLR) and qualitative (margin requirements, credit rationing, moral suasion, publicity) control over credit to maintain price and exchange rate stability.

5. Custodian of Foreign Currency Reserves — The central bank is the sole custodian of gold, foreign exchange and other reserves. It manages these reserves to overcome balance of payments difficulties and stabilise exchange rates.

6. Maintenance of Exchange Rate — It monitors and tries to maintain stability in the exchange rate of the home currency to promote foreign trade and encourage foreign investment.

7. Clearing House Facility — As a clearing house, it settles the claims of commercial banks through book entries, avoiding cash withdrawals and stabilising the banking system.

8. Developmental Functions — In a developing country like India, the central bank performs developmental functions such as creating special financial institutions for agriculture, industry and trade; ensuring balanced regional development; and controlling prices.

9. Collection and Publication of Data — It conducts surveys, publishes reports and bulletins, provides staff training to bank personnel, and maintains relations with international financial institutions like World Bank and IMF.