GSTN issued an advisory stating that the Aggregate Annual Turnover (AATO) functionality on the GST Portal is being upgraded to enable automatic updation of AATO as subsequent returns are filed post the amendment window, with this enhanced functionality being deployed from July 1, 2026. Consequently, the window for amendment of AATO by taxpayers for FY 2025-26 has been revised on the GST Portal. The advisory refers to an earlier GSTN advisory dated May 2, 2022, regarding the AATO amendment functionality, which was applicable for AATO up to FY 2024-25 and under which taxpayers were provided the facility to amend turnover during the month of May.

The advisory states that, to ensure greater consistency, accuracy, and uniformity in the reporting of AATO across various modules of the GST Portal, certain system-level enhancements are being implemented, and the timelines for submission of amendment applications and verification of amended AATO details by tax officers, in respect of FY 2025-26, have been revised as follows: the AATO Amendment Application window for FY 2025-26 shall be from July 1 to July 31, 2026, and review by the jurisdictional tax officer shall be from August 1 to August 15, 2026.

The advisory states that the facility for amendment of AATO, previously available during May under the earlier advisory, shall now be available from July 1 to July 31, 2026 for FY 2025-26, with amended AATO details available for review by tax officers from August 1 to August 15, 2026. Taxpayers are advised to note the revised timelines and to review AATO details carefully while submitting amendment applications, ensuring accuracy before submission. Taxpayers are advised that any difficulty or concern may be raised as a grievance through the Self-Service Portal on the GST Portal, along with relevant details.