Meaning, Scope and Importance of Public Finance

Public Finance is the branch of economics that studies the income, expenditure, borrowing and financial administration of public authorities — the Union Government, State Governments and local bodies. It examines how a government raises resources (chiefly through taxation), how it spends them, how it borrows when its spending exceeds its revenue, and how all of this is planned, executed and controlled through the budget.

Public finance differs from private finance in several fundamental ways. A private individual or firm generally earns income first and then adjusts spending to fit that income — expenditure is the dependent variable. A government, by contrast, typically decides its expenditure priorities first (defence, education, health, infrastructure) as a matter of policy, and then arranges the revenue — through taxation and borrowing — needed to meet that spending; here expenditure is often the independent variable. A government also possesses the sovereign, coercive power to compel citizens to pay taxes, a power no private individual has. Further, while a private individual usually aims to balance income and expenditure every period, a government may deliberately run a deficit or a surplus as an instrument of economic policy — to stimulate a slowing economy, for instance, or to cool an overheating one.

The scope of public finance covers four broad areas, each taken up in this chapter: Public Revenue (how the government raises money), Public Expenditure (how it spends), Public Debt (how it borrows when revenue falls short of expenditure), and the Government Budget and Fiscal Policy (how all of this is planned and used to influence the wider economy). Its importance lies in the fact that, through these four levers, the government can influence resource allocation, redistribute income and wealth, stabilise the economy against fluctuations, and promote economic growth and development.