Public finance is the study of the role of the government in the economy. It is the branch of economics that assesses the government revenue and government expenditure of the public authorities and the adjustment of one or the other to achieve desirable effects and avoid undesirable ones.
Public finance affects developing economies in many different ways. ... In practice, public finance policies through its different measures such as taxation policy, budgetary policy, public debt policy and a co-ordination with monetary policy can direct the economic destiny of a nation.