The Central Board of Indirect Taxes and Customs (CBIC) has opened a public consultation on a new way of fixing GST returns — one that would end the familiar practice of editing auto-populated figures in FORM GSTR-3B directly. Under the alternate mechanism recommended by the GST Council at its 57th meeting on 8 October 2026, tax liability would be corrected only through the outward-supply statements (FORM GSTR-1, FORM GSTR-1A or the Invoice Furnishing Facility), and input tax credit (ITC) would be managed only through the Invoice Management System (IMS) and notified electronic statements. Comments are invited on the MyGov portal from 1 November to 30 November 2026, and the Council has recommended bringing the mechanism into force from the return period of April 2027.
In plain business-owner language: if your GSTR-3B does not match your GSTR-1 or your GSTR-2B today, the fix will no longer be a quiet edit inside GSTR-3B. You will have to fix the source document, so that the return, the statement and the credit record all agree — and that should mean fewer demand notices chasing mismatches.
Why this consultation exists: the mismatch problem
Under the current framework, a supplier reports outward supplies in FORM GSTR-1, and the recipient's ITC statement in FORM GSTR-2B is built from those details. Tax liability in GSTR-3B is auto-populated from GSTR-1, and available ITC in GSTR-3B is auto-populated from GSTR-2B. Taxpayers can still edit those auto-populated values in GSTR-3B before filing — and the consultation note says that is exactly where the trouble starts. Editing creates discrepancies between the liability reported in GSTR-1 and the tax paid in GSTR-3B, and between the ITC available in GSTR-2B and the ITC availed in GSTR-3B. Those discrepancies, the note says, often lead to demand notices from tax officers and system-generated intimations to taxpayers.
Facilities already exist to correct things at source: FORM GSTR-1A lets a taxpayer amend GSTR-1 details before filing GSTR-3B; the Invoice Management System (IMS), available on the portal since October 2024, lets recipients accept, reject or keep supplier invoices pending so that GSTR-2B reflects their decision; an Electronic Credit Reversal and Re-claim Statement has run on the portal since August 2023; and an RCM Ledger/ITC Statement has run since August 2024 for monthly filers (July–September 2024 for quarterly filers). The note admits that, except for FORM GSTR-1A, these facilities have not been notified in the CGST Rules, 2017, and some taxpayers keep editing GSTR-3B manually instead of using them. The alternate mechanism gives these facilities statutory backing — and then removes the room for direct GSTR-3B edits.
The core principle: fix the source, not the return
The note states the end-state plainly. With the proposed measures in place, there may not be any need for directly rectifying or amending auto-populated liability details (from GSTR-1/1A/IFF) or auto-populated ITC details (from GSTR-2B) in FORM GSTR-3B. Any amendment or correction of liability will be done through FORM GSTR-1/1A/IFF instead of directly amending auto-populated values in GSTR-3B. Any management of ITC will be done through IMS, the Electronic Credit Reversal and Re-claim Statement, the Electronic Statement of tax paid on reverse charge basis and ITC claimed, FORM GST PMT-04 and FORM GST PMT-10, instead of directly amending auto-populated ITC in GSTR-3B.
Two proposed rule insertions give this principle legal teeth. Proposed Rule 61(1A) provides that the outward-supply details in a tax period's return must not be at variance with the details furnished in GSTR-1, as amended by GSTR-1A, or using IFF, for that tax period; and where an omission or incorrect particular is discovered after filing, it can only be rectified by rectifying the outward-supply statement for the tax period in which the omission or error is noticed, subject to section 37(3) of the CGST Act. Proposed Rule 61(1B) mirrors this on the ITC side: ITC declared as available (other than on reverse-charge supplies) must not be at variance with the ITC made available in GSTR-2B for that tax period. Reverse-charge ITC and reclaimed ITC are each tied to their own statements, as explained below.
Old vs new
The nine building blocks of the proposal
1. Sharper GSTR-1/1A/IFF. The forms will identify the nature of the underlying supply for credit notes, debit notes, advances received and advances adjusted — regular outward supplies, supplies under section 9(5), or zero-rated supplies — instead of letting them land in the wrong GSTR-3B table. Reconciliation with e-commerce operator details in FORM GSTR-8 is also to be enabled, and portal guidance such as tool tips and guided navigation is suggested.
2. A wider GSTR-1A. As noted above, GSTR-1A will be usable for earlier tax periods and for correcting the recipient's GSTIN. This single change removes two of the commonest reasons taxpayers resorted to editing GSTR-3B.
3. Liability discipline — Rule 61(1A). GSTR-3B liability must equal GSTR-1/1A/IFF for the period. Errors surface later are fixed in the outward-supply statement for the period in which they are noticed, within the section 37(3) time limit. Only reverse-charge liability keeps the subsequent-period adjustment route in GSTR-3B itself.
4. ITC discipline — Rule 61(1B). Non-reverse-charge ITC in GSTR-3B must equal GSTR-2B for the period. Reverse-charge ITC is governed by Rule 86D(4) and reclaimed ITC by Rule 86C(4) (see below). The message is consistent: the return follows the statement, not the other way round.
5. IMS becomes a Rule, with more breathing room. Proposed Rule 60(6A) notifies the Invoice Management System: recipients accept, reject or keep pending inward-supply details, and anything not acted on by the GSTR-3B filing date is deemed accepted. Credit notes get a longer pending window — for monthly filers, until filing GSTR-3B for the next-to-next month (and no later than the end of the month in which that return's due date falls); for quarterly filers, until the next quarter's GSTR-3B on the same pattern. Suppliers may voluntarily link credit and debit notes to their underlying invoices in GSTR-1/1A/IFF, so recipients can decide with full information. A circular will guide taxpayers on correct IMS action.
6. Two notified statements, with hard caps. The Electronic Credit Reversal and Re-claim Statement becomes Rule 86C in FORM GST PMT-02A: reclaimed ITC in GSTR-3B cannot exceed the balance in that statement. The Electronic Statement of tax paid on reverse charge basis and ITC claimed becomes Rule 86D in FORM GST PMT-02B: ITC claimed on reverse-charge supplies (other than import of goods) cannot exceed the reverse-charge liability declared in that GSTR-3B plus the statement's closing balance. Discrepancies in either statement are reported in FORM GST PMT-04. A new Table 4(AA) in GSTR-3B will separately report reclaimed ITC, so it no longer needs to be squeezed into Table 4(A)(5).
7. A fix for wrong permanent reversals — FORM GST PMT-10. Today there is no systematic way to correct an excess reversal of ITC that was reversed permanently in Table 4(B)(1) of GSTR-3B (temporary reversals in Table 4(B)(2) can already be reclaimed in a later return). Proposed Rule 61(1B) read with the new form lets a taxpayer rectify such an excess reversal on a self-assessment basis, subject to section 39(9), with the amount credited either to the electronic credit ledger or to the Rule 86C statement, depending on how the original reversal was recorded.
8. DRC-03 stops double payment. Where tax has been paid through FORM GST DRC-03 following audit, inspection, scrutiny or enforcement, the taxpayer may within seven days of payment declare the underlying invoice or debit-note details in Part B of DRC-03. When those details are then reported in GSTR-1/1A, the liability will not be added again to auto-populated GSTR-3B, and the details will appear in the recipient's GSTR-2B for ITC. Proposed Rule 67B adds a related discipline: if a recipient rejects a credit note (or other liability-reducing document) on IMS, the supplier must pay that liability with interest under section 50 in the next period's return, deemed payable from the due date of the return for the period in which the credit note was declared.
9. The smaller items that still matter. ITC distributed by an Input Service Distributor as ineligible will flow as ineligible ITC in GSTR-2B and land in Table 4(D)(2) of GSTR-3B, instead of being reversed again in Table 4(B)(1); ineligible ISD credit notes will no longer reduce eligible ITC. Rules 88C and 88D are proposed to be omitted from a prospective date. A draft circular (Annexure C) will clarify correct ITC availment and reversal reporting in GSTR-3B.
Who is affected
Every GST-registered person filing GSTR-3B is affected in principle, because the proposal changes the mechanics of every return. It bites hardest on taxpayers who regularly correct figures today: businesses with frequent credit notes, debit notes and advances; recipients who often reject or hold supplier invoices on IMS; taxpayers with reverse-charge supplies; Input Service Distributors and their recipients; e-commerce sellers reconciling against operator data; and anyone who has paid tax through DRC-03 during proceedings and then struggled to pass the credit on without double payment. Return-preparation software built around editing GSTR-3B will need to be re-pointed at GSTR-1/1A, IMS and the PMT statements well before April 2027.
What to do next
- Read the consultation pack, not just the summary. The 93-page pack on MyGov contains the note (pages 2–10), the proposed Rule amendments (Annexure A), the proposed form amendments (Annexure B) and the draft circular (Annexure C), with proposed changes highlighted in red. Check the provisions that touch your filing pattern — especially Rule 61(1A)/(1B), Rules 86C/86D and the PMT-10 mechanism.
- Submit comments by Monday, 30 November 2026. Suggestions are invited through the MyGov consultation page's submission route. The note says comments received will be examined and duly considered before the form and rule amendments are finalised — this is the window to flag practical problems, such as time limits, portal behaviour or transition issues.
- Audit your current GSTR-3B edits. List every recurring manual edit your business makes to auto-populated liability or ITC in GSTR-3B, and map each one to its new home: GSTR-1/1A correction, IMS action, PMT-02A/02B balance, PMT-04 discrepancy report, or PMT-10 rectification. Anything with no new home is exactly what a consultation comment should raise.
- Tighten IMS discipline now. The proposal makes IMS the control room for ITC. Recipients should review pending and rejected documents promptly, and suppliers should use the proposed voluntary linking of credit and debit notes to invoices so recipients are not forced into defensive rejections.
- Plan for April 2027, but do not act as if it is already law. The Council has recommended the mechanism from the April 2027 return period, but the Rules and forms are not yet amended. Nothing in this proposal changes any return due before then, and the final design may differ from the consultation draft after comments are considered.
What is NOT covered — and what to watch
Three cautions. First, this is a consultation on a Council recommendation, not a notification: no Rule has been amended yet, and no form has changed. Second, FORM GSTR-1A continues alongside the new mechanism — the proposal adds routes, it does not abolish the existing correction facility. Third, statutory time limits still frame the new routes: GSTR-1A rectification remains subject to section 37(3), and PMT-10 rectification remains subject to section 39(9). A correction facility is not an open-ended right to rewrite history, and interest and other consequences of the underlying error are a separate question from whether the figures reconcile. Readers should also note that the consultation pack is the authoritative text: where any summary — including this article's — differs from the pack, the pack prevails.
Frequently asked questions
What is the CBIC alternate mechanism for GST returns? It is a proposed mechanism, recommended by the GST Council at its 57th meeting on 8 October 2026 and now under public consultation, under which tax liability in GSTR-3B is corrected only through GSTR-1/1A/IFF and ITC is managed only through IMS and notified statements, instead of by editing auto-populated figures in GSTR-3B directly.
When does the alternate GST return mechanism start? The GST Council has recommended bringing it into force from the return period of April 2027. It is not yet in force: the Rules and forms must first be finalised after the consultation.
How do I submit comments on the GST return consultation? Comments are invited on the MyGov Innovate India consultation page for the proposed alternate mechanism, through its submission route, by Monday, 30 November 2026. The consultation opened on 1 November 2026.
Will I still be able to edit GSTR-3B directly after April 2027? Under the proposal as drafted, no: proposed Rule 61(1A) requires GSTR-3B liability to match GSTR-1/1A/IFF, and proposed Rule 61(1B) requires ITC to match GSTR-2B, with corrections routed through the source statements and notified mechanisms instead.
What is FORM GST PMT-10? FORM GST PMT-10 is a proposed new form to rectify, on a self-assessment basis and subject to section 39(9), an excess reversal of ITC that was reversed permanently in Table 4(B)(1) of GSTR-3B of an earlier tax period — a correction for which no systematic mechanism exists today.
What are FORM GST PMT-02A and PMT-02B? PMT-02A is the proposed notified form of the Electronic Credit Reversal and Re-claim Statement (Rule 86C), which caps reclaimed ITC at its balance. PMT-02B is the proposed Electronic Statement of tax paid on reverse charge basis and ITC claimed (Rule 86D), which caps reverse-charge ITC at the liability declared in the return plus the statement balance.
What happens if my customer rejects my credit note on IMS? Under proposed Rule 67B, if a recipient rejects a credit note or other liability-reducing document on IMS, the supplier must pay the attributable output tax liability with interest under section 50 in the next period's return, deemed payable from the due date of the return for the period in which the credit note was declared.
Is the April 2027 date final? No. April 2027 is the Council's recommended commencement for the return period, and the consultation runs to 30 November 2026. The final Rules, forms and commencement date will be known only when the amendments are notified after comments are considered.
Sources
- CBIC / Ministry of Finance public consultation — "Inviting suggestions for the proposed Alternate mechanism for making amendment in liability and ITC in GST", MyGov Innovate India (submissions open 1 November – 30 November 2026): MyGov consultation page
- Consultation pack — "Note on the proposed Alternate Mechanism for making amendment in liability and ITC in GST" (93 pages: note, Annexure A — CGST Rules amendments, Annexure B — CGST Forms amendments, Annexure C — draft circular): Consultation PDF (MyGov)
- CGST Act, 2017 — sections 37(3), 39(9) and 50, as referred to in the proposed Rule amendments.
Note: this article reports a proposal under public consultation. The consultation pack is the authoritative text; the mechanism takes effect only when the CGST Rules and forms are finalised and notified, as recommended from the April 2027 return period.
