Non filing of income tax return

Yes u can file a belated return under section 139(4)

Agree with Anjali, If the tax deducted was by your employer then it would be the correct amount of your annual tax due and there will not be any balance tax payable or refundable (assuming there is no other income other than salary). If you have other income like interest then you will have to pay additional tax on such income before filing the Return of Income