To curb this menace and malpractices, ICAI has conceptualised and implemented an innovative concept called UniquDocument Identification Number (UDIN). ICAI at its 379th Council Meeting held on 17th – 18th December, 2018 made generation of UDIN mandatory for every signature of Full time Practising Chartered Accountants in phased manner for the following services:

  • All Certificates with effect from 1st February, 2019
  • GST and Income Tax Audit with effect from 1st April, 2019
  • All Audit and Assurance Functions with effect from 1st July, 2019

Therefore, UDIN is being made mandatory for all Audit and Assurance Functions like Documents and Reports certified / issued by full time Practicing Chartered Accountants from 1st July, 2019

Members are being advised to plan the Audits and Assurance functions accordingly as UDIN has to be generated on the date of signature dates of Certificates / Report / Audit Reports although a 15 days window is there for exceptional circumstances.

Further, non-compliance of UDIN directive may attract Disciplinary Proceedings as per Clause 1 of Part II of Second Schedule of The Chartered Accountants Act, 1949.



  • Go to the website: https://udin.icai.org
  • Login through “Member Login” option given on the portal by providing 6 digits membership no. in username and relevant password in password option.


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