A tax is a mandatory financial charge or some other type of levy imposed upon a taxpayer by a governmental organization in order to fund government spending and various public expenditures. Direct taxes are levied directly on income and indirect taxes are levied on goods and services. The purpose of taxation is to finance government expenditure. The previous year refers to the financial year for which the income is being assessed, while the assessment year refers to the year in which the income from the previous year is assessed for income tax purposes. An assessee refers to a person by whose income tax is payable under the Income Tax Act.