You Must file the PT Returns on / before 20th of the Next Month. i.e; November Returns must be filed on / before 20th December.
You must file the Returns to " The D.C.T.O " of your circle. you must know to which circle your office belongs to...
Please find the attached PT Challan. change the details ( Company Name, Registration Number etc. ) in the Challan, so that you can use it.