TIN Facilitation Centre (TIN-FC) / NSDL Processing Staff
NSDL e-Governance Infrastructure Limited (authorised by Income Tax Department)
Steps 3–5 — processing the Form 49B application, verifying documents, and forwarding to the Income Tax Department for TAN allotment
Receives and verifies the Form 49B application and supporting documents, processes the fee, and coordinates TAN allotment with the Directorate of Income Tax (Systems).