Invoice Management System (IMS) is the GST Portal workspace where a recipient reviews supplier records saved or filed in GSTR-1, GSTR-1A or IFF. For each eligible record, you can accept it, reject it or leave it pending while you verify the invoice, tax period and input-tax-credit (ITC) treatment.
The critical point is timing: an IMS pending window is not the same as a supplier’s GSTR-1 due date or the one-time GSTR-1A amendment window. The applicable tax period and whether you file monthly or under QRMP determine how long a pending record can remain untouched. Check the live GST Portal and current notifications before acting.
As an Amazon Associate I earn from qualifying purchases.
What is Invoice Management System (IMS)?
The GST Portal’s official definition describes IMS as a facility where invoices or records saved or filed by a supplier in GSTR-1, GSTR-1A or IFF can be “accepted, rejected or kept pending by recipients in order to correctly avail ITC.” IMS is therefore a recipient-side review workflow, not a replacement for GSTR-3B or a legal determination that an expense qualifies for credit.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
IMS launched on 1 October 2024, and recipient actions became available from 14 October 2024. A supplier record can appear as soon as it is saved in the relevant GSTR-1, GSTR-1A or IFF. This means a recipient may see a record before the supplier has finally filed the return, so the period and status shown in the portal matter.
#1 Best Overall
Records that do not enter IMS
Some records are excluded from the IMS workflow. Records treated as ITC-ineligible because of place-of-supply rules or because they fall under section 16(4) of the CGST Act are routed directly to the ITC Not Available section of GSTR-2B instead of appearing for accept, reject or pending action in IMS.
What do accept, reject and pending mean?
| Action | Use it when | Operational consequence |
|---|---|---|
| Accept | The supplier, invoice number, taxable value, tax amount and period agree with your records and the transaction is ready for your normal ITC review. | The accepted record is processed for the relevant GSTR-2B period. You still must apply the ordinary eligibility, payment, documentation and reversal rules when preparing GSTR-3B. |
| Reject | The record is not yours, is duplicated, is materially wrong, or should not be treated as your purchase. | The rejection is recorded for that period. Resolve the underlying supplier or accounting issue rather than assuming rejection alone corrects the supplier’s books. |
| Keep pending | You expect a correction, need confirmation from the supplier, or cannot yet match the record to your purchase register. | Pending is temporary. Once the applicable window expires, the portal disables further pending action and an untouched record is treated as deemed accepted. |
Do not use pending as a way to preserve an invoice indefinitely. Track every pending item against its GSTR-2B period, your filing frequency and the portal’s currently displayed cut-off.
IMS deadlines: how the pending window is calculated
There is no single IMS pending date for every taxpayer. The October 2025 GST Portal FAQ explains that the window depends on the applicable GSTR-2B period and whether the recipient files monthly or under the QRMP scheme. After the specified period, the pending option is disabled and a record with no action is deemed accepted.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchMonthly filers
In the FAQ’s monthly example, a record for the November period can remain pending through the GSTR-3B due date for that period. This is an illustration of the rule, not a universal date for every November or every taxpayer. Use the period displayed in IMS and the current GSTR-3B schedule for your registration.
QRMP filers
The FAQ’s QRMP example allows pending action through one following quarter, with the example extending to the due date for the January–March 2026 quarter. That example demonstrates how a quarterly filer may have a longer review window; it does not turn that quarter’s date into a standing deadline. Confirm the applicable quarter and due date in the portal.
What happens when the window expires?
- The portal stops allowing you to keep the record pending for that applicable period.
- If you have taken no action, the record is treated as deemed accepted.
- You must then account for the record in your reconciliation and ITC review using the status and values shown in the relevant GSTR-2B.
Because the result of inaction is deemed acceptance, set an internal ageing report or calendar reminder rather than waiting for the final day.
How GSTR-1, IFF and IMS timelines differ
Supplier filing dates and recipient review dates are separate clocks. Confusing them is a common cause of missed corrections.
| Process | Normal timing stated by the GST Portal | Who uses it | Why it matters to IMS |
|---|---|---|---|
| Monthly GSTR-1 | 11th of the succeeding month, subject to extensions by government notification | Monthly suppliers | Records may become visible in IMS when saved, even before the supplier’s final filing deadline. |
| Quarterly GSTR-1 | 13th of the month after the quarter, subject to extensions | Quarterly suppliers, including QRMP participants | This supplier deadline does not define the recipient’s IMS pending window. |
| IFF | 13th of the succeeding month for each of the first two months of a QRMP quarter | QRMP suppliers using the optional Invoice Furnishing Facility | IFF records flow to recipient GSTR-2A and, on filing, GSTR-2B; the IFF date remains distinct from IMS action cut-offs. |
| Prior-financial-year GSTR-1 correction cut-off | 30 November of the following financial year, subject to applicable rules or extensions | Suppliers correcting an earlier year’s invoice details | This is a supplier-return correction limit, not a recipient’s pending deadline. |
What happens after you accept or reject a record?
Accepted and rejected records associated with a particular GSTR-2B period are removed from IMS after you file GSTR-3B for that period. Pending records and records associated with future tax periods remain visible. This explains why an item can disappear after filing without being deleted from the supplier’s return history.
Before filing GSTR-3B, retain the invoice, purchase-register match, tax-period decision and any correspondence supporting a rejection or correction. IMS status is a workflow record; it does not by itself establish that ITC is legally available.
How to review a pending invoice step by step
- Open the IMS area in the GST Portal. Filter by GSTIN, supplier, document number, document type and tax period so that you are reviewing the correct record.
- Match the record to your books. Check supplier identity, invoice or credit-note number, invoice date, taxable value, tax components, place of supply and whether the purchase was actually received.
- Check the source return. Identify whether the record came from GSTR-1, GSTR-1A or IFF and whether it was merely saved or filed.
- Check period and eligibility. Confirm that the record belongs to the GSTR-2B period you are preparing and is not excluded from IMS because of place-of-supply rules or section 16(4).
- Choose an action. Accept a correctly matched record, reject a record that is not yours or is materially wrong, and keep it pending only when a specific verification or supplier correction is expected.
- Document the reason. Save a reconciliation note, ticket or email reference for every rejection and pending item.
- Recheck before the applicable cut-off. If the supplier has not corrected the record before the pending window closes, decide using the current portal status; do not assume pending will continue.
What is GSTR-1A and when should it be used?
GSTR-1A is an optional, one-time amendment facility for the same tax period. It becomes available after the supplier files GSTR-1 or after the GSTR-1 due date, whichever is later. The supplier can file it once and must do so before filing GSTR-3B for that period.
Typical use cases
- Adding an invoice or other record omitted from the original GSTR-1.
- Amending details that were reported incorrectly in the original GSTR-1.
- Correcting a record after the GSTR-1 filing or due date but before the supplier files GSTR-3B.
When a supplier adds or amends a record through GSTR-1A, the recipient’s related ITC is reflected in the next tax period’s GSTR-2B, not the same-period GSTR-2B. Plan reconciliation accordingly: a same-period correction does not necessarily produce a same-period credit statement.
Free tools Windows power users keep installed
One-click scans. No signup required.
Credit notes and the October 2025 IMS change
The October 2025 IMS changes introduced an option for recipients to specify the ITC amount to reverse for certain accepted credit-note records. The change addresses cases in which the recipient had not availed the full ITC on the original invoice or had already made a partial reversal.
Previously, the FAQ describes the workflow as reversing the entire corresponding ITC amount in GSTR-2B when the credit note was accepted. The updated option lets the recipient enter the amount to reverse for the applicable record. Treat this as a portal-workflow choice, not a blanket tax conclusion: verify the document type, the original invoice, amounts already claimed or reversed and the instructions currently displayed for your registration.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common mistakes and how to avoid them
Using the GSTR-1 due date as the IMS deadline
A supplier’s 11th or 13th filing date does not tell you how long you may keep a recipient record pending. Use the IMS period-specific window instead.
Leaving every mismatch pending
Pending should identify an expected action, such as a supplier amendment or an internal receipt check. Items with no realistic resolution path should be rejected or otherwise handled before the window expires.
Recommended Free Tools
Rank #4
Assuming an amendment changes the same GSTR-2B
GSTR-1A additions and amendments flow to the recipient’s next tax period’s GSTR-2B. Adjust your reconciliation calendar and avoid claiming the correction from the wrong statement.
Claiming ITC solely because a record is accepted
Acceptance does not replace the recipient’s responsibility to test eligibility, documentation, receipt, payment and reversal requirements under the applicable GST provisions.
Ignoring records that never appear in IMS
If a record is absent because it is excluded under place-of-supply rules or section 16(4), look for it in GSTR-2B’s ITC Not Available section rather than repeatedly searching IMS.
A practical monthly or quarterly control checklist
- Download or review new IMS records as soon as suppliers save or file them.
- Group items by GSTR-2B period and filing frequency.
- Match invoice and credit-note data to the purchase register and goods-or-services receipt evidence.
- Contact suppliers promptly where GSTR-1A correction or a later return filing is expected.
- Maintain a pending-age report with the portal cut-off shown for each period.
- Review credit-note reversal amounts against ITC actually availed and any earlier reversal.
- Before GSTR-3B filing, resolve or document every pending item that is approaching deemed acceptance.
- After filing GSTR-3B, reconcile which accepted and rejected records disappeared from IMS and retain the supporting workpapers.
Where to verify the current rule
GST procedures and dates can change through government notifications or portal updates. Before taking action, open the current IMS FAQ and period details in the GST Portal, confirm whether you are a monthly or QRMP filer, and check the due date shown for the relevant GSTR-3B. If a record affects a material ITC amount or involves a disputed eligibility issue, obtain advice from a qualified GST professional; the portal workflow alone does not determine your legal entitlement.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
