Filing of IT Return

If your income above Basic Exemption Limit (Rs 2,50,000.00) you need to file ITR otherwise not required

If you are less than 60 years of age and your total annual gross income exceeds Rs. 2,50,000. If you are a senior citizen i.e. 60 years or above and below 80 years of age, and your total annual gross income exceeds Rs3,00,000. If you are a super senior citizen i.e. 80 years or above and your total annual gross income exceeds Rs5,00,000. If you are a company or a firm, then irrespective of whether you have profit or loss, filing ITR for the financial year is a must. If you are looking forward to claiming a tax refund for the financial year. If you are an Indian resident and act as a signing authority for any foreign account. If you are an Indian resident and possess an asset or financial interest located outside India. If you have sold equity shares in a company or unit of equity oriented mutual funds or unit of business trust for more than Rs.2,50,000 and have gained tax-exempt long-term capital gains from the same. If you receive any income derived from the sale of a property which had been held under a charitable trust, religious trust, political party, educational institution, any authority, body or trust. If you are a foreign company which has been taking any treaty benefit on any transaction made in India.

Very Good reply , Mr. Joy

if income exceed exemption limit or before deduction you have to file file return

In addition to the above points, 

You may also file the Income Tax Returns when there is some tax deducted at source which you want to claim refund.