The study of public finance has assumed increasing importance in the recent decades. Several factors contributed this trend. The money expenditures and the money receipts of the government may affect not only the pattern of production and the distribution of the total product among the various income receivers, but also the levels aggregate output and prices within the economy.Since 1930, the various aspects of government finance have been increasingly in reference to their effects on the economy as a whole, as well as their impacts upon the treasury.

In modern times public finance includes four major divisions: public revenue, public expenditure, public debt, and certain problems of the fiscal system as a whole, such as fiscal administration and fiscal policy.

Public finance, like economics, generally deals with people, and this means that many of its problems depend on human behaviour which is the subject matter of psychology. For example, taxation requires a study of human motivation.

Should a government’s budget present a balance sheet of assets and liabilities as well as an operating statement of current income and outgo? In arriving at the net income of a firm for tax purposes, it is customary and logical to allow a deduction for depreciation on the capital used by the firm. The concept of income, playing a major role in public finance literature, is an accouting concept.

Public finance also involves may legal problems. There are many cases where public finance and law overlap.

Economics deals with the administration of scarce resources to satisfy human wants. Since, it is the function of the state to satisfy the wants of its citizens, the issues involved in taxation are a part of economics.