GSTR-2A and 2B mismatch notices: how to answer without conceding
The most numerous notice in India is a spreadsheet with a covering letter. It should be answered as an evidentiary exercise, not an accounting one.
A mismatch notice alleges that credit availed in GSTR-3B exceeds the credit reflected in GSTR-2A or 2B, and calls for reversal with interest and penalty. The reply must reconcile line by line, categorise each difference by cause, and produce the underlying document for each category. A mismatch is a reason to enquire. It is not, by itself, a determination that credit was wrongly availed, and the leading authority is Suncraft Energy.
What a mismatch actually is
GSTR-2A is a dynamic statement. GSTR-2B is a static monthly statement generated on a cut off date. Both reflect what suppliers have reported, not what tax has been paid to the Government and not whether the supply occurred.
A difference between the statement and your books therefore has many innocent causes: timing, a supplier filing quarterly, an invoice reported in the wrong period, an invoice reported against the wrong GSTIN, credit availed on a document that is not an invoice such as a bill of entry or a self invoice, and reverse charge credit which never appears in 2B at all.
The first task in a reply is to remove the innocent causes from the figure. In most files the demand shrinks by more than half before a single legal argument is made.
The reply structure that works
One, a reconciliation statement in the department's own format, with a column identifying the cause for each line and a document reference for each cause.
Two, a category note. Timing differences with the month of appearance. Import credit with the bill of entry number. Reverse charge credit with the self invoice and the cash payment. ISD credit with the ISD invoice. Credit relating to a supplier who filed late, with the date of appearance.
Three, the residual. Only what remains after these categories is genuinely in dispute, and for that residual the three layer evidence file applies — existence, consumption and diligence.
Four, the legal position on the residual: Suncraft Energy on proceeding against the supplier first, and the point that Section 16(2)(aa) requires communication of the invoice, which is a condition about reporting and not a licence to disregard proof of the supply.
Five, a request for the relied upon data. Departments frequently work from a portal report that is not annexed. Ask for it.
Interest and penalty on the residual
Interest under Section 50(3) read with Rule 88B applies to credit wrongly availed and utilised. Where the credit sat in the ledger unutilised, the interest computation must reflect that, and the department's automatic computation usually does not.
Penalty under Section 122(2) depends on whether there was fraud or wilful misstatement. On a mismatch caused by a supplier's default, there is neither, and a penalty at the higher rate should be resisted specifically.
For the years covered by Section 128A, the waiver arithmetic may make payment the better commercial answer. Run it before you argue.
Authorities relied on
Credit cannot be reversed on a mere mismatch without first proceeding against the supplier, save in exceptional cases.
Credit cannot be denied solely because it is not reflected in GSTR-2A; the taxpayer must be given an opportunity to prove entitlement on documents.
The burden of proving the genuineness of the transaction rests on the person claiming credit.
What to do on Monday
Build the reconciliation in the department's format with a cause column; it is the single most persuasive document in the file.
Isolate import, reverse charge and ISD credit first — that category alone usually removes a large part of the demand.
Compute interest separately on availed and utilised amounts under Rule 88B before conceding any figure.
Send a written request for the portal report relied on, and keep the acknowledgement.
This page states the general position. A reader with a specific question on their own facts may write to the GST practice at AMLEGALS.
Write to the GST practiceQuestions we are asked on this
Does credit not appearing in 2B automatically mean reversal?
No. Diya Agencies and the line following it hold that the taxpayer must be given an opportunity to establish entitlement on the underlying documents.
Why does our import and reverse charge credit show as a mismatch?
Because it never appears in 2B. This is the single largest category of spurious demand, and it is answered with the bill of entry and the self invoice.
The supplier filed the invoice a year late. Is our credit valid?
The availment date must still satisfy Section 16(4). Where the invoice appeared after the outer date, the credit is barred; where it appeared within, the timing difference is answerable.
Should we reverse the disputed amount to stop interest?
Only with a covering letter recording that the reversal is under protest and without prejudice, and only after computing whether interest actually runs on unutilised credit.
Can we ask for cross examination of the supplier?
Where the notice relies on a statement by or an enquiry against the supplier, yes, and the request must be in writing before adjudication closes.
In this cluster
- Input tax credit under GST: the complete 2026 position
- Section 16(2)(c): can your ITC be denied because the supplier did not pay tax?
- Section 16(4) time limit for claiming ITC: what survives after the amnesty
- Blocked credits under Section 17(5): the clause by clause map
- Safari Retreats: what the Supreme Court decided on ITC for construction, and what Parliament then undid
- ITC on canteen, transport, insurance and other employee benefits
- ITC reversal under Rules 42 and 43: working the formula correctly
- Rule 37: ITC reversal when you do not pay your supplier within 180 days
- Rule 37A: reversal where your supplier did not file its GSTR-3B
- Rule 86A blocking of the electronic credit ledger: the remedies that actually work
GST Insights is published by AMLEGALS for general information. Law stated as on 3 September 2026. Not advice on any particular set of facts; not an advertisement or a solicitation under Rule 36 of the Bar Council of India Rules. Readers with a question on their own facts may write to the GST practice of their own accord.