Where is the crr money being kept?

CRR (Cash Reserve Ratio) money is held by commercial banks in the form of reserves with the central bank, typically the Reserve Bank of India (RBI) in India or the Federal Reserve in the United States. This reserve requirement is a percentage of the bank's total deposits and is maintained to ensure liquidity and stability within the banking system. The funds are not available for lending or investment by the banks and serve as a safeguard against potential bank runs or liquidity crises.