Proof of Address
he Tax deduction and collection account number is the unique 10-character alphanumeric code required by persons who have to deduct tax at source or TDS.
The Income Tax Department has delegated this power to NSDL, who on the behalf of IT department and under the supervision of CBDT issues the TAN card.
Any Individual or a business entity that is supposed to deduct the TDS and file the TDS return are mandatory to apply for TAN.
The TAN number is valid for a lifetime unless you surrender it to the tax authorities due to some reasons. The generation of the TAN is a one-time process requires no renewal.
The persons who have to obtain the TAN number require to fille TAN application form 49B.
The government offers an online portal