Your Aggregate Annual Turnover (AATO) on the GST portal decides more than you might think: for example, whether e-invoicing applies to you (₹5 crore and above) and how many HSN digits you report in GSTR-1. GSTN has changed how AATO is maintained.
What changed
- Automatic updates from 1 July 2026. AATO now updates itself as you file returns, including returns filed after the amendment window.
- The amendment window moved. Under the 2022 advisory, AATO could be amended in May (up to FY 2024-25). For FY 2025-26, the window was moved to July:
| Activity | FY 2025-26 timeline |
|---|---|
| Taxpayers file AATO amendment applications | 1 July to 31 July 2026 |
| Jurisdictional officer reviews | 1 August to 15 August 2026 |
Why AATO matters
- E-invoicing applies at AATO of ₹5 crore and above, and new requirements such as e-invoices for RCM self-invoices use the same threshold.
- HSN reporting in GSTR-1 (4 or 6 digits) depends on turnover in the previous year.
- Other portal features and validations use AATO as well.
A wrong AATO can mean missing a compliance requirement or being asked for one that doesn't apply to you.
What you should do
- Check the AATO shown on your GST dashboard against your actual turnover across all GSTINs under your PAN.
- If it's wrong, use the next amendment window and attach supporting details.
- With auto-updating now in place, filing returns accurately and on time keeps AATO correct.
For problems, raise a grievance on the GST Self-Service Portal.
