Definition of Tax by Different Authors. The term ’tax' has been derived from the French word 'taxe' and etymologically, the Latin word 'taxare' in related to the term 'tax', which means 'to charge‘. Tax is a contribution exacted by the state. It a non-penal but compulsory and unrequited transfer of resources from the private to the public sector, levied on the basis of … [Read more...] about Definition of Tax by Different Authors