CBIC Clarifies DIN Not Needed in GST Portal Communications

Circular No. 249/06/2025-GST, Dated 09-06-2025

The Central Board of Indirect Taxes and Customs (CBIC) has issued a circular to eliminate ambiguity regarding the requirement of quoting the Document Identification Number (DIN) in GST communications.

1. DIN Not Required for Portal-Based GST Communications

CBIC has clarified that DIN is not mandatory for communications generated through the GST common portal. This includes all forms of notices, orders, and letters issued via the system interface of the portal.

2. Role of Reference Number (RFN)

Such communications already carry a system-generated Reference Number (RFN), which is:

• Unique,
• System-generated, and
• Verifiable using a utility on the GST portal.

This RFN ensures traceability, accountability, and authenticity—the core purposes for which DIN was originally introduced.

3. Verification Through GST Portal

CBIC has emphasised that taxpayers and officers should rely exclusively on the RFN for verifying the legitimacy of any communication issued via the portal. A dedicated utility for this verification is available on the GST portal.

4. Validity of Communications with RFN

All GST communications containing a valid RFN should be deemed valid, even in the absence of a DIN. Officers are instructed not to insist on DIN if the RFN is present, and taxpayers are advised to treat such RFN-tagged communications as legitimate.

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