Financial institutions are the intermediaries that make the financial system work — they connect savers with borrowers, manage risk, and facilitate payments. Without them, individuals would have to find borrowers themselves, assess creditworthiness alone, and bear all the risk. Financial institutions solve these problems at scale.
Major types: commercial banks (SBI, HDFC, JPMorgan) — accept deposits and make loans; investment banks (Goldman Sachs, Morgan Stanley) — underwrite securities and advise on M&A; insurance companies (LIC, AIG) — pool and manage risk; mutual fund companies (Vanguard, SBI MF) — manage pooled investments; and NBFCs (non-banking financial companies) — lend without taking deposits.
The global financial services industry is worth over $26 trillion in revenue. Central banks (RBI, Federal Reserve, ECB) regulate financial institutions to ensure stability. The concept of "too big to fail" emerged during the 2008 crisis — some institutions are so large that their failure would collapse the entire system, necessitating government bailouts.