Requirements:
Valid mobile number.
Deductor's TAN or name.
Deductor's state.
Using the Service:
Visit Portal: Go to the e-Filing portal and select "Know TAN Detail".
Enter Information: Choose "Name" if you don't know the TAN. Select category and state, enter the deductor's name and your mobile number.
OTP Validation: Receive a 6-digit OTP, enter it for validation.