Finance describes the flow of money and how people, companies, and governments make, save, invest, borrow, and spend it. Personal finance is about budgeting, spending, borrowing, saving, and investing for the future. Corporate finance involves raising capital and issuing stock. establishing and expanding a business, purchasing equipment, leasing machinery, and hiring staff. Public finance focuses on managing public debt, spending on public services, collecting taxes, and stimulating the economy. Finance is critical to growing wealth, making decisions, and managing risk.