What is assessee code and is it different from Registration number, ECC code and STC?
They are all one and the same. The assessee code is a 15-character identification number allotted by the system to the assessee based on the PAN number or temporary number (if PAN is not submitted) when the registration details are entered in the Central Server. The 15-character assessee code will be available in the registration certificate issued to the assessee by the Assistant Commissioner/Deputy Commissioner of the Division. Assessee code is same as Registration Number, ECC code, and STC.
