We deal with Indian and International Taxation, the imposition of compulsory levies on individuals or entities by governments. Taxes are levied in almost every country of the world, primarily to raise revenue for government expenditures, although they serve other purposes as well. In modern economies taxes are the most important source of governmental revenue. Taxes differ from other sources of revenue in that they are compulsory levies and are unrequited—i.e., they are generally not paid in exchange for some specific thing, such as a particular public service, the sale of public property, or the issuance of public debt. While taxes are presumably collected for the welfare of taxpayers as a whole, the individual taxpayer’s liability is independent of any specific benefit received. There are, however, important exceptions: payroll taxes, for example, are commonly levied on labour income in order to finance retirement benefits, medical payments, and other social security programs —all of which are likely to benefit the taxpayer