Invoice Management System explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
GSTR-2B used to be a passive statement — whatever the supplier reported, appeared. The Invoice Management System made it an interactive one, and the recipient's action now determines both its own credit and, in one case, the supplier's liability.
Records reported by suppliers land in the IMS dashboard. The recipient takes one of three actions on each — Accept, Reject, or Pending. Accepted and no-action records flow into GSTR-2B; rejected records do not; pending records are held for a later period. GSTR-2B is generated on the 14th of the following month, and can be recomputed where actions are taken after generation but before GSTR-3B is filed.
The three actions
Accept. The record enters GSTR-2B and the credit is available.
Reject. The record does not enter GSTR-2B. Use where the invoice is not yours, the GSTIN is wrong, or the supply did not happen.
Pending. The record is held and carried forward, appearing in a subsequent period's GSTR-2B when accepted. Use where the goods have not yet been received, the invoice is under dispute, or the first proviso to s.16(2) applies because the last lot has not arrived. Goods received in lots →
No action is treated as deemed accepted. That is the default, and it means a recipient who never opens IMS still gets the same GSTR-2B it would have got before.
The credit note consequence
This is the change with the sharpest effect, and it runs the other way — from recipient to supplier.
Where a supplier issues a credit note and the recipient rejects it in IMS, the supplier's output tax liability is increased in the corresponding period.
The logic follows the proviso to s.34(2): no reduction in output tax liability of the supplier shall be permitted if the incidence of tax and interest on such supply has been passed on to any other person. A rejected credit note means the recipient has not reversed the credit, so the incidence has not been unwound, and the supplier's reduction fails.
Practical consequences:
For suppliers. A credit note is no longer unilateral. Where the recipient does not accept it, the liability comes back. Post-supply discount programmes need the recipient's cooperation, and the s.15(3)(b) reversal condition is now enforced mechanically. Post-supply discounts →
For recipients. Rejecting a credit note is not a neutral act. It should be done only where the credit note is genuinely wrong, and the supplier told.
Where a rejection needs care
Wrong GSTIN. Reject — the invoice belongs to someone else.
Invoice not received. Pending is usually better than reject, because the invoice may be genuine and simply delayed.
Value or tax dispute. Pending, pending resolution. Rejecting removes it from 2B entirely and the supplier must then re-report it.
Duplicate. Reject the duplicate.
Blocked credit. Accept, and disclose as ineligible in GSTR-3B Table 4(D)(1). Rejecting a genuine invoice because the credit is blocked creates a mismatch between the supplier's GSTR-1 and the recipient's 2B for no reason. Blocked, reversed, ineligible →
That last one is the most common misuse. IMS decides what appears in 2B; it does not decide eligibility. Eligibility is decided in the return.
Recompute and timing
GSTR-2B is generated on the 14th of the month following the tax period.
Where actions are taken after generation but before GSTR-3B is filed, the recipient can recompute GSTR-2B so the changes are reflected. Once GSTR-3B is filed, the period is closed and further IMS action carries to the next period.
Sequence that works:
- review IMS through the month as records arrive;
- take actions before the 14th;
- check the generated 2B against the purchase register;
- recompute if late actions were taken;
- file GSTR-3B.
What IMS does not change
Section 16 conditions. Accepting a record in IMS does not satisfy s.16(2)(b) — receipt of goods or services — or s.16(2)(c), or remove a s.17(5) block.
Section 16(4). The time limit runs from the invoice's financial year regardless of when it was accepted.
Rule 37A. A supplier who reported in GSTR-1 but did not file GSTR-3B still triggers the reversal, whatever the IMS action. Rule 37A →
Rule 88D. Credit availed exceeding 2B still produces DRC-01C, and the explanation is the same. Rule 88D and DRC-01C →
Key takeaways
- Accept, Reject or Pending — three actions; no action is deemed accepted.
- Accepted and no-action records enter GSTR-2B; rejected do not; pending carry forward.
- Rejecting a supplier's credit note increases the supplier's liability — the s.34(2) proviso, enforced mechanically.
- GSTR-2B generates on the 14th; actions after that require a recompute before filing GSTR-3B.
- Accept blocked-credit invoices and disclose them as ineligible in the return; do not reject them.
- IMS decides what appears in 2B, not eligibility.
Read next
- Invoice Management System: The New Compliance Layer
- Rule 88D and DRC-01C: ITC Availed versus Available
- Credit and Debit Note Particulars: Rule 53(1A)
- ITC Matching: How GSTR-2B Auto-Populated Credit Works
Disclaimer: Positions stated as on 5 September 2026, based on ICAI GST publications updated to 2026. IMS functionality evolves through GSTN advisories; verify current behaviour on the portal.