No.
No registration is required for a sole proprietorship. You simply have to open a bank account with the name & style you want to work. But if you are liable for state VAT or service tax registration, then you have to obtain VAT and/or service tax registration. Further, for sole proprietorship, no separate income tax PAN is required. The PAN of the proprietor will be the PAN of the firm and proprietor will have to file income tax return in his personal name.
