Nov. 8, 2019

The Documentation Identification Number (DIN) system of Central Board of Indirect Taxes (CBIC) will come into existence from 8th November 2019.


  • Any communication from GST or Custom or Central Excise department without a computer generated DIN, would be treated as invalid. No communication would be issued by CBIC without DIN except only if it is in the specified exceptional circumstances.

  • To begin with, the DIN would be used for search authorisation, summons, arrest memo, inspection notices and letters issued in the course of any enquiry. The DIN system would be extended to other communications by the end of next month.

  • The step is to further the Government’s objectives of bringing transparency and accountability in the indirect tax administration also through widespread use of information technology. It will provide the taxpayer a digital facility to verify any communications.

  • The Government has already executed the DIN system in the direct tax administration.