How do I match GSTR-2B for ITC using IMS?
What GSTR-2B is, how IMS accept, reject and pending actions change the auto-drafted ITC statement, where rule 37A reversals appear, and a working match against the purchase register before you take credit in GSTR-3B.
In this guide
GSTR-2B is the auto-drafted ITC statement generated from supplies your vendors reported in GSTR-1, IFF, GSTR-1A, GSTR-5 and GSTR-6. From October 2024 the Invoice Management System sits in front of it: accept, reject or keep a document pending, and GSTR-2B follows those actions. Credit you reject does not flow into GSTR-3B. Match GSTR-2B to the purchase register each period, then take only the eligible credit under section 16. Confirm the statement on the GST portal before you file GSTR-3B.
What is GSTR-2B?
GSTR-2B is not a return you file. It is the statement the portal builds for you from what your suppliers already reported. The official viewing manual is plain: it is generated for every registered person from Form GSTR-1, IFF, GSTR-1A, Form GSTR-5 and ITC received through Form GSTR-6. Against each document it says whether credit is available.
That is why a GSTR-1 versus GSTR-3B gap at the supplier becomes your ITC problem. Their outward statement feeds your GSTR-2B. Your GSTR-3B is where you take the credit. Section 16 still decides whether you are allowed to take it. GSTR-2B only shows what the system has seen.
How does IMS change GSTR-2B?
From 1 October 2024 the Invoice Management System sits in front of GSTR-2B. Path on the portal: Dashboard → Services → Returns → Invoice Management System (IMS) Dashboard. You accept a document, reject it, or keep it pending. GSTR-2B is drafted from those actions. The summary tab then splits into four parts.
| Summary | What it holds | What you do with it |
|---|---|---|
| ITC Available | Credit the system treats as available on the generation date, including credit to net off | The starting list for a claim, after you still apply section 16 |
| ITC not Available | Inward supplies on which credit is not available, including many credit notes after an IMS action | Do not take this credit in GSTR-3B |
| ITC Reversal | Credit the system computes for reversal, including rule 37A where the supplier has not filed GSTR-3B | Reverse in GSTR-3B. Reclaim only after the supplier files |
| ITC Rejected | Documents you rejected on IMS. They will not populate GSTR-3B | Use this to confirm a rejection actually left the 3B draft |
The GSTR-2B tile has an Open IMS Dashboard button and an Open GSTR-3B button. Use them in that order. A rejection that never reached IMS will still sit in ITC Available and will still try to flow into 3B.
From the October 2025 period the All Tables list also includes IMPG (Amendments) and IMPGSEZ (Amendments) for bills of entry. If you import, match those tables as well. A books-only match that ignores BoE amendments will look clean and still be wrong.
How do I match GSTR-2B to my books?
The portal publishes a matching offline tool that compares GSTR-2B with a purchase-register template. Use that, or a spreadsheet with the same columns. The point is the same four buckets, not a single variance number.
- Download GSTR-2B for the period from Returns Dashboard. If the statement has more than 1,000 documents, the official manual says to generate Excel or JSON from the download page rather than reading the on-screen table.
- Export the purchase register for the same tax period, including debit notes, credit notes and reverse-charge invoices.
- Match on GSTIN, document number, document date and taxable value. A value match with the wrong invoice number is not a match.
- Split the remainder: in books but not in GSTR-2B, in GSTR-2B but not in books, in both but with a tax-head difference.
- Act on IMS. Accept the invoices you will claim. Reject the ones that are not yours or not eligible. Leave pending only what you intend to take in a later period, and only where the portal still allows pending.
- Regenerate or refresh GSTR-2B and only then draft table 4 of GSTR-3B.
In books but not in GSTR-2B usually means the supplier has not filed GSTR-1 or IFF, or filed after the GSTR-2B cut-off. You cannot invent that credit. Chase the supplier, or wait for the next statement. In GSTR-2B but not in books is often a wrong GSTIN, a credit note you have not booked, or a document you should reject on IMS.
When is GSTR-2B generated each month?
GSTR-2B for a monthly filer is generated on the 14th of the following month, covering supplier documents filed after the previous cut-off. An invoice a vendor files on the 15th therefore lands in the next statement, which is why a books-versus-GSTR-2B gap on the 14th is often timing rather than a lost credit.
Can I claim credit missing from GSTR-2B?
Credit absent from GSTR-2B cannot be taken, because section 16(2)(aa) of the CGST Act requires the invoice details to have been furnished by the supplier and communicated to the recipient. Chase the vendor to file GSTR-1, then take the credit in the period it appears, subject to the 30 November outer limit in section 16(4).
What is a rule 37A ITC reversal?
The official manual describes the rule 37A line in the ITC Reversal summary. The system looks at your GSTR-2B for the period whose supplier GSTR-3B is still unfiled. It takes invoices, debit notes and their amendments, and leaves out reverse-charge invoices and credit notes. That amount is the reversal. Taking the credit anyway, because the invoice looks fine in the books, is how a later notice starts.
GSTR-2B also will not save you from section 17(5). A blocked credit can still appear as available if the supplier reported it as a normal B2B invoice. The statement is not a legal opinion. Motor cars, personal consumption, and the other blocked entries still have to come out in your own working.
Section 16(4) is a separate clock. Credit that first appears in a late GSTR-2B can already be out of time. Matching well does not reopen a year the Act has closed.
Where do I open GSTR-2B on the portal?
- Log in at gst.gov.in, and keep the GST portal input tax credit help open beside the statement.
- Open Services → Returns → Returns Dashboard, choose the year and period, and open the GSTR-2B tile. The official viewing manual is the sequence, including the October 2024 summary layout.
- From the summary, open IMS and finish accept or reject before you open GSTR-3B.
- For a large purchase register, download the official matching tool rather than building a one-off sheet that drifts from the template.
Due dates for the return you then file live on the GSTR-3B due date page. This page is only the credit match.
Where are IMS and GSTR-2B changes announced?
The statement is on the GST portal. What moves is a circular, a portal note, or a change to how IMS actions feed GSTR-2B. CBIC / GST updates on Complied AI keep those notices in one feed so you can open the source document and then read section 16 next to it.
Practical checks
Common questions
What is GSTR-2B?
GSTR-2B is an auto-drafted input-tax-credit statement. It is generated for every registered person from documents the supplier filed in GSTR-1, IFF or GSTR-1A, from GSTR-5, and from credit received through GSTR-6. It tells you which credit the system treats as available, not available, reversed or rejected for that period.
How does IMS change GSTR-2B?
On the Invoice Management System dashboard you accept, reject or keep pending the invoices and notes your supplier saved or filed. GSTR-2B is then built from those actions. Rejected documents sit in the ITC Rejected summary and do not populate GSTR-3B. Pending documents stay out of GSTR-2B until you act or the system later treats them as accepted.
Where do I open GSTR-2B on the GST portal?
Log in at gst.gov.in, open Services → Returns → Returns Dashboard, pick the financial year and period, and use the GSTR-2B tile. The official viewing manual is on the GST tutorial. From the summary you can also open the IMS dashboard.
An invoice is in my books but not in GSTR-2B. Can I claim it?
No. Credit absent from GSTR-2B cannot be taken, because section 16(2)(aa) of the CGST Act requires the supplier to have furnished those invoice details and the portal to have communicated them to you. Chase the vendor to file GSTR-1 or IFF, then claim in the period it appears, subject to the 30 November limit in section 16(4).
When does GSTR-2B get generated each month?
GSTR-2B for a monthly filer is generated on the 14th of the following month from supplier documents filed after the previous cut-off. An invoice a vendor files on the 15th therefore appears only in the next statement, so a gap seen on the 14th is often a timing difference rather than a lost credit.
I rejected an invoice on IMS by mistake. What happens to the credit?
A rejected document lands in the ITC Rejected summary of GSTR-2B and does not populate GSTR-3B, so the credit is not available for that period. Reverse the action on the IMS dashboard before GSTR-3B is filed and regenerate GSTR-2B. Once GSTR-3B for the period is filed, the correction moves to a later period inside the section 16(4) window.
What is a rule 37A reversal in GSTR-2B?
The ITC Reversal summary computes credit that must be reversed because the supplier has not filed GSTR-3B for that tax period. The official manual says the system uses invoices, debit notes and their amendments from your GSTR-2B, excluding reverse-charge invoices and credit notes. Reverse it in GSTR-3B. Reclaim only after the supplier files.
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How this guide was prepared
This guide is published by the Complied AI research desk. Its source list and stated position were checked against the official records shown below on 14 August 2026.
Automation, including AI, may assist research, drafting and structure. It does not replace the official record or amount to an independent professional review. Read our editorial standards and corrections policy.
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