Here are some key points about income tax returns: 

Reporting Income: Taxpayers must report all sources of income they received during the tax year, including wages, salaries, interest, dividends, rental income, capital gains, and any other income.

Calculating Tax Liability: Taxpayers use the information provided on the tax return to calculate their tax liability, which is the amount of tax they owe to the government based on their income, deductions, exemptions, and credits.

Claiming Deductions and Credits: Taxpayers can reduce their taxable income by claiming deductions for certain expenses, such as mortgage interest, medical expenses, charitable contributions, and education expenses. They can also claim tax credits, which directly reduce the amount of tax liabilities.

Filing Deadlines: Taxpayers must file their income tax returns by a specified deadline, which is July 31st for non-corporate assessees who are not liable to get audited their Financial Statements. And 30th September for corporate assessees, and individuals who are liable to get audited thier financial statements.

Electronic Filing/E-Filing: Tax authorities facilitates taxpayers to file their income tax returns electronically through online platforms, which can streamline the process and often provide faster refunds.

Penalties for Non-Compliance: Failure to file an income tax return or filing inaccurately can result in penalties, fines, and other consequences imposed by the tax authority.

Overall, the purpose of filing an income tax return is to fulfill one's legal obligation to report income and pay the appropriate amount of taxes owed to the government, as well as to claim any deductions or credits to which one is entitled.