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Corporate TaxArticle·2 April 2026

Mandatory DIN Referencing Rationalised

By J the App

Executive Summary

The CBDT has issued a comprehensive circular revising the framework for quoting Document Identification Number (DIN) in communications issued by income-tax authorities. 

The circular supersedes earlier guidance and aligns DIN requirements with recent statutory amendments, while introducing operational flexibility in exceptional scenarios.


The requirement of quoting DIN was originally introduced to ensure transparency, traceability, and authenticity in tax communications. With legislative changes, includ...

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