INCOME TAX BREAKING: CBDT has issued Circular 4/2026, replacing the earlier DIN Circular 19/2019 with updated rules

INCOME TAX BREAKING: CBDT has issued Circular 4/2026, replacing the earlier DIN Circular 19/2019 with updated rules.

✅ All notices, letters, summons, and orders to taxpayers must carry a DIN going forward.

✅ DIN can be mentioned within the document, email, or even as a separate attachment – all are valid.

✅ Every page need not contain DIN – mentioning it once in the communication is sufficient.

✅ Public communications like guidelines or FAQs do not require DIN.

✅ DIN may be skipped only in exceptional cases, such as technical issues or system failure.

✅ DIN can also be absent when officers lack system access, PAN is unavailable, or migration issues exist.

✅ If communication is issued without DIN, reason must be clearly stated in the document. All such communications must get approval from senior authority within 15 days.

✅ Even when issued without DIN initially, it must be uploaded later with DIN within 15 working days.