Individuals, except senior citizens, have to mandatorily file the ITR through the online mode which is also known as electronic filing, i.e. e-filing of the income tax return.
An income tax return is a form that a person is required to submit to the Income Tax Department. It contains information related to individual's income and taxes paid, starting from 1st April to 31st March of the financial year. There are seven ITR forms prescribed by the Income Tax Department according to the amount of income, income source and the category to which the taxpayer belongs.