Governments need to perform different functions in the field of political, social and economic activities to maximise social and economic welfare. In order to perfom such duties and functions, the government requires large amount of resources. These resources are called as the public revenues. Public revenue is defined as the total income of the government and the other public authorities from all sources. It is an important tool of the fiscal policy of the government and is the opposite factor of government spending. Revenues earned by the government are received from various sources. Today public revenue in the modern state can be divided into two major sources: taxes and public borrowing