Explanation and meaning for due date of filing :
1. due date of filing return mean a return of income where income is filed with -ve income (carry forward of loss to next year) the due date is 31st july
2. all other cases the filing of return is 31st of next year in case of persons having tax payable to avoid any penalty. ( till that 31st march he can pay the tax payable amount with interest).
3. in all other cases there is no due date of filing.
It is a broader phase when it comes to due date.