An individual whose annual income is more than the basic exemption limit of Rs 2.5 lakh should file an ITR. The basic exemption limit for senior citizens (60 years onwards and less than 80 years) is Rs 3 lakh, and for super senior citizens is Rs 5 lakh.
You should file an income tax return to claim tax deductions for tax savings such as ELSS, PPF, NSC investments and for payments such as housing loan repayments, insurance premium and donations.
You can claim an income tax refund by e-filing your income tax return. An e-filing enables you to claim credit for excess TDS paid and a tax refund.
You can e-verify your ITR within 120 days from the date of filing. You can e-verify using your net banking account or Aadhaar based OTP. A failure to e-verify your ITR can invalidate your ITR filing.