return filing

If your income is less  than  500000/- penality will be  Rs 1000/- for filing of late retrun .

You mean  to say you are not  paying any income tax ( Nil retrun) , you income in the previous year  is  250000/- or less , Nor need  file retrun . As per section 139 (b) of the income tax 1961 Income during the pervious year exceeded the maximum amount which is  not chargeable to income tax must  furnish retrun.