Hi Srinivas,
You might want to contact a tax consultant in this case. But based on the little knowledge I have, here are the important points:
1. The registration forms will be available at the commercial tax office.
2. You would have to fill out this form and submit the following documents at the same office:
A. Memorandum of articles
B. Board resolution for authorized signatory
C. If it is a new establishment, then the lease agreement for the premises being occupied
D. Number of directors
E. Number of employees
F. Registration fees of Rs 2,500.00 per director
You will be issued a registration certificate. From that month onwards, you can submit the challan based on the slabs for the deduction of PT. Normally, this should be done before the 20th of every month, although there is no pay-by date as per the act.
Thanks and Regards,
Siva