TAN is to be gotten by all people who are answerable for deducting charge at source (TDS) or who are needed to gather charge at source (TCS).
There are two modes for applying for TAN:
Disconnected – An application for apportioning of TAN is to be recorded in Form 49B in copy and submitted to any TIN-FC. Addresses of TIN FCs are accessible at NSDL TIN site.
On the web — Online application for TAN can be produced using the site of NSDL TIN site.