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Invoice Management System (IMS) under GST

by | May 12, 2026 | GST

Tax Compliance                      GST India                      Updated for FY 2025–26

 “The Smart Invoice Desk — How India’s GST Portal Lets Taxpayers Accept, Reject, or Defer Inward Supply Records”

The Invoice Management System (IMS), launched by the GSTN in October 2024, is a real-time facility on the GST portal that allows recipients to take explicit action on each invoice populated in their inward supply view. It directly impacts Input Tax Credit (ITC) claims and the accuracy of GSTR-2B auto-drafts. Understanding its three core actions — Accept, Reject, and Pending — is essential for every registered taxpayer.

Background

What is the IMS and why does it matter?

Or: “From passive auto-population to active invoice governance”

Before IMS, invoices filed by suppliers auto-populated GSTR-2A and GSTR-2B without any recipient-side confirmation. Mismatches, wrong GSTIN entries, or fraudulent invoices still fed into ITC claims, creating reconciliation nightmares and department notices. IMS introduces a structured approval layer — every invoice now demands a recipient’s deliberate action before crystallising as ITC-eligible.

Core actions

The three pillars of IMS: Accept, Reject, Pending

Or: “Green light, Red light, Yellow light — navigating your inward invoice dashboard”

Accept
Recipient confirms the invoice is correct, the supply was received, and ITC is to be claimed. Invoice flows into GSTR-2B and ultimately GSTR-3B.
Reject
Recipient marks the invoice as erroneous or not pertaining to them. The invoice is excluded from ITC. Supplier is effectively notified through the mismatch.
Pending
Recipient is not yet ready to decide — goods may be in transit or dispute is ongoing. Invoice stays outside GSTR-2B until an action is taken in a future period.

How acceptance works

Accepting an invoice: process and ITC impact

Or: “Clicking ‘Accept’ — the last mile of your ITC journey”

Once a supplier files GSTR-1 or GSTR-1A and the invoice appears in the recipient’s IMS dashboard, the recipient can mark it as Accepted. This populates the invoice into the GSTR-2B draft for that tax period. When the recipient subsequently files GSTR-3B, the ITC is claimed. Importantly, if a recipient takes no action, invoices that were earlier in “Deemed Accept” status (based on older GSTR-2A logic) no longer apply — IMS makes every ITC claim an affirmative act.

  Key rule: An accepted invoice can still be reversed later via amendment in the supplier’s GSTR-1A, but the recipient must re-action the amended invoice in IMS.

How rejection works

Rejecting an invoice: grounds and supplier implications

Or: “When the supply doesn’t match the invoice — the power of the Reject button”

A recipient may reject an invoice for several valid reasons: the goods or services were not received, the invoice contains a wrong GSTIN, the value or tax amount is incorrect, or the supply is exempt/blocked under Section 17(5) of the CGST Act. Rejection removes the invoice from GSTR-2B eligibility. The supplier can view rejected invoices and should issue a credit note or rectify the entry in GSTR-1A. Rejected invoices do not automatically trigger a departmental audit but form part of the reconciliation record accessible to tax officers.

Rejection does not create a tax liability on the recipient — it only stops ITC flow.
Supplier must issue a credit note or amend GSTR-1A to correct rejected entries.
Blocked credits under Sec 17(5) (food, club memberships, personal use) should be rejected.
Rejected invoices are retained in IMS audit trail for departmental reference.

How pending actions work

Keeping invoices pending: when and how long?

Or: “Park it, don’t lose it — strategic use of the Pending status in IMS”

The Pending status is not an indefinite deferral. An invoice kept pending in one period simply does not appear in that period’s GSTR-2B. It remains visible on the IMS dashboard and can be actioned in any subsequent tax period up to the time limit for ITC claims under Section 16(4) of the CGST Act — currently the earlier of the annual return filing date or 30th November of the following financial year.

Common scenarios for using Pending include: goods in transit where receipt is unconfirmed, invoices where internal three-way matching is in progress, or where a vendor dispute is pending resolution. Keeping too many invoices in Pending status for extended periods may attract scrutiny regarding ITC reversal obligations.

  Time limit caution: Pending invoices not actioned by the Section 16(4) deadline become permanently ineligible for ITC. Monitor aged pending invoices monthly.

Workflow

IMS action cycle: from supplier filing to GSTR-3B

Or: “The invoice’s journey — seven steps from e-invoice to filed return”

1. Supplier files GSTR-1 / GSTR-1A or generates e-Invoice
Invoice data is transmitted to GSTN and appears on recipient’s IMS dashboard in near real-time.
2. Recipient reviews invoice in IMS
Cross-checks against purchase order, GRN, and contract. May involve internal finance team or ERP reconciliation.
3. Recipient takes action — Accept / Reject / Pending
Action is saved on the portal and timestamped. Can be changed before GSTR-3B is filed for that period.
4. GSTR-2B is auto-generated based on accepted invoices
Only accepted invoices flow into GSTR-2B. Rejected and Pending invoices are excluded from that period’s draft.
5. Recipient files GSTR-3B
ITC from GSTR-2B is claimed. Any over-claim or under-claim relative to IMS actions can attract interest and penalties.
6. Supplier rectifies rejected invoices
Via GSTR-1A amendment or credit note. Amended invoice re-appears in recipient’s IMS for fresh action.
7. Pending invoices carried to next period
Dashboard retains them. Recipient actions them when ready, subject to Section 16(4) deadline.

Compliance tips

Best practices for managing IMS actions

Or: “Keeping your ITC clean — a compliance checklist for IMS”

Review IMS dashboard at least weekly — don’t wait until the filing deadline.
Integrate your ERP or accounting software with GSTN APIs for real-time IMS sync.
Assign a dedicated IMS officer responsible for Accept/Reject/Pending decisions.
Set calendar alerts for Section 16(4) deadlines against all aged Pending invoices.
Communicate rejected invoices to suppliers promptly to allow timely rectification.
Retain screenshots or export records of all IMS actions for audit trail purposes.