GSTN Rolls Out Phase-III Changes to Table 12 of GSTR-1 & GSTR-1A Effective February 2025



Quick Summary
The GST Network (GSTN) is rolling out Phase-III changes for Table 12 of GSTR-1 and GSTR-1A, effective from the February 2025 return period. This update replaces manual HSN code entry with a dropdown selection system and bifurcates Table 12 into separate tabs for B2B and B2C supplies. Initial validations on supply and tax values will be in warning mode, meaning they won't block filing.

Implementation of mandatory mentioning of HSN codes in GSTR-1 GSTR 1A After successful implementation of Phase-I Phase-II now Phase-III regarding Table 12 of GSTR-1 1A is being implemented, from return period February 2025. In this phase manual entry of HSN has been replaced by choosing correct HSN from given Drop down. Also, Table-12 has been bifurcated into two tabs namely B2B and B2C, to report these supplies separately. Further, validation regarding values of the supplies and tax amounts
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FAQ :

Phase-III replaces manual HSN code entry with a dropdown selection, bifurcates Table 12 into B2B and B2C supplies tabs, and introduces validations for supply and tax amounts.

These changes will be effective from the return period of February 2025.

No, manual user entry of HSN codes will not be allowed in Phase-III; HSN codes must be selected from a dropdown list.

Table 12 is now bifurcated into two tabs: 'B2B Supplies' and 'B2C Supplies', requiring taxpayers to report HSN summary details separately under each.

Initially, these validations will be in warning mode, meaning a warning or alert message will be shown for mismatches, but taxpayers will still be able to file their GSTR-1.

Yes, a new button 'Download HSN Codes List' has been introduced in Table 12, allowing taxpayers to download an Excel file with the updated list of HSN & SAC codes and their descriptions.




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