The Reserve Bank of India (RBI) controls the credit created by commercial banks in India, which is its most important function. RBI uses quantitative and qualitative methods to regulate the volume, direction, and use of credit in the economy. Quantitative methods like bank rate, open market operations, cash reserve ratio, and statutory liquidity ratio aim to directly influence the total amount of credit. Qualitative methods like credit rationing, margin requirements, and moral suasion are used to indirectly encourage or discourage certain types of credit usage. Proper credit control by RBI is important for maintaining price stability and economic growth in India.