The financial system consists of financial institutions, financial markets, and financial instruments that enable funds to flow from savers to borrowers. It includes banks, mutual funds, insurance companies, stock and money markets, as well as instruments like equities, bonds, and securities. The Reserve Bank of India acts as the central bank, regulating monetary policy and the banking system to promote price stability and economic growth. It uses tools like interest rates, reserve requirements, and open market operations to influence money supply and credit in the economy.