AATO Amendment Timeline Revised on the GST Portal

Update at a glance

A GSTN advisory revised the timeline for amendment of Aggregate Annual Turnover. Taxpayers should check the portal-displayed turnover and complete any permitted correction within the available window after reconciling it with returns and financial records.

Key points to review

Compare portal AATO with books and filed returns. Maintain working papers supporting any requested change. Do not alter turnover data without entity-level review and approval.

Who should review this

Business owners, finance teams, compliance personnel and advisers whose facts or regulated activity fall within the official update.

Practical response

Verify the operative source, assess applicability, document the decision, assign an owner and retain evidence of any process or filing change.

Key points

• Compare portal AATO with books and filed returns.
• Maintain working papers supporting any requested change.
• Do not alter turnover data without entity-level review and approval.

Why it matters

• The update may affect process, documentation, system configuration, filing or governance decisions.
• The full official source must be checked for applicability, effective date, conditions and later amendments.

Practical next steps

1. Open and archive the official source linked above.
2. Identify affected entities, transactions, periods, systems and responsible owners.
3. Prepare a short applicability and change-impact note.
4. Update the compliance calendar, SOP, system or document checklist only after professional review.
5. Record the reviewed date and monitor for superseding updates.

Official source: Read the complete source (2026-07-01).