ASMT-10 GST Scrutiny Notice: How to Reply to the Officer

Your business has received an ASMT-10 notice from the GST department, and the discrepancy table may show a tax amount you do not recognise. An ASMT-10 notice reply is not a letter of confession, and the notice is not yet a demand. It is the scrutiny stage under section 61 of the CGST Act, 2017: the officer has compared your returns and wants an explanation. The practical job is to reconcile your books, GSTR-1, GSTR-3B and e-invoices, then file ASMT-11 with evidence. This guide walks a small manufacturer through that work.

What an ASMT-10 notice is and why scrutiny was selected

Scrutiny is a return-based check. The proper officer examines returns filed under section 39, the annual return under section 44, a final return, or particulars called for under section 65. If something looks inconsistent, Rule 99 requires a notice in FORM GST ASMT-10. The notice usually states the tax period, the return, the nature of the discrepancy, and the tax, interest or other amount that appears payable. The legal source is section 61 of the CGST Act, 2017 and Rule 99 of the CGST Rules, 2017.

Selection does not by itself prove evasion. Common triggers are a gap between outward supplies in GSTR-1 and tax paid in GSTR-3B, a mismatch between GSTR-2B and input tax credit claimed, e-invoice IRNs that do not match the return, or a sudden fall in turnover. The officer is asking you to explain the numbers, not to accept a finding. Treat the notice as a document-production exercise with a deadline.

Reading the discrepancy table: tax period, section and amount

Read the table line by line. For each row, copy five things into a working sheet: GSTIN, tax period, return type, the exact discrepancy description, and the amount. Do not merge rows that cover different periods. A difference of ₹18,000 in one month can be a credit note; a difference of ₹1.8 lakh across twelve months can be a reporting lag.

Check the section mentioned. If the notice refers to section 73, the department is looking at a period within the normal limitation. If it refers to section 74, it may allege suppression or misstatement, which carries a higher penalty exposure. You should not assume that a section 74 reference is final; your reply can show that the facts do not support it. Also check whether the amount is tax, interest, or both. An ASMT-10 is not a DRC-01 demand, but the amount column tells you what the officer has computed.

Reconciling books, returns and e-invoices before reply

Build a three-way reconciliation. Start with the sales register in Tally or your ERP. Match invoice-wise outward supplies with GSTR-1. Then match GSTR-1 with GSTR-3B, allowing for credit notes, amendments, and timing. Finally, match e-invoice IRNs with the invoices reported. For purchases, match the purchase register with GSTR-2B and the ITC claimed in GSTR-3B. Keep a separate column for invoices where the supplier has not filed GSTR-1; those are not your ITC to defend as a recipient unless the law allows it.

Use a reconciliation statement that shows opening difference, additions, deductions, and closing difference. The officer should be able to follow one number from your books to the return without a second explanation.

Worked scenario: a Rajkot manufacturer

Suppose M/s Shreeji Precision, a Rajkot-based manufacturer with turnover of ₹8.4 crore, receives an ASMT-10 for July 2023. The notice says GSTR-1 outward tax is ₹6,42,000, GSTR-3B tax paid is ₹6,18,000, and the difference is ₹24,000. The officer also flags ITC of ₹38,500 claimed in GSTR-3B but not appearing in GSTR-2B.

The accountant finds that one invoice of ₹1,20,000 plus 18% GST (₹21,600) was reported in GSTR-1 in July but the goods were returned in August; a credit note was issued and reported in the August return. The remaining ₹2,400 was a rounding error in a freight invoice. For ITC, ₹22,000 relates to a supplier who filed GSTR-1 late, and ₹16,500 relates to an invoice that was never received in GSTR-2B because the supplier uploaded it under the wrong GSTIN.

The reply should not simply say "difference is due to credit note". It should attach the July GSTR-1, August GSTR-1 showing the credit note, the credit note, the invoice, the e-way bill if available, and a reconciliation statement. For the ₹22,000 ITC, attach the supplier's GSTR-1 filing evidence and payment proof. For the ₹16,500, either get the supplier to correct the GSTIN or reverse the ITC. The officer can accept the explanation for the credit note and still raise a demand for the ITC that remains unsupported.

Filing the ASMT-10 notice reply: ASMT-11 and documents

Rule 99 of the CGST Rules, 2017 requires your reply in FORM GST ASMT-11 within 30 days of receiving the ASMT-10. Log in to the GST portal, open the notice under Services > Returns > Scrutiny, and file the reply. The form gives you options to accept the discrepancy, partially accept it, or contest it. Use the "partial" route where the numbers support it. Do not mark "accepted" for the whole notice just to close the file; that can convert a reporting gap into an admitted liability.

Attach a covering letter on letterhead, the reconciliation statement, return extracts, invoice copies, credit notes, e-invoice IRN details, GSTR-2B extracts, ledger extracts, and payment challans if you are paying. Keep PDFs legible and name them by period and document type. If you need more time, write to the jurisdictional officer before the 30 days end and upload that request; do not assume the portal will extend the deadline automatically.

• Download the ASMT-10 and note the tax period, section and amount for every row.

• Match GSTR-1, GSTR-3B, GSTR-2B and e-invoice IRNs invoice by invoice.

• Prepare a one-page reconciliation statement with opening and closing differences.

• Collect invoices, credit notes, e-way bills, ledgers and supplier filing evidence.

• Decide what you accept, what you contest, and what you will pay before filing.

• File ASMT-11 within 30 days and download the acknowledgement.

What happens after ASMT-11: the ASMT-12 stage, not a hearing

ASMT-12 is not a hearing. It is the form used at the scrutiny stage after your reply. If the officer accepts your explanation, the scrutiny is closed and you should download the ASMT-12 from the portal. If the officer does not accept it, the officer may proceed under section 73 or 74 for the disputed amount. A personal hearing, if any, comes at the show-cause stage, not as an automatic ASMT-12 hearing.

Do not wait for an ASMT-12 to start preparing. If the officer seeks a clarification, respond on the portal within the time given. If the reply is rejected, ask for the reasons in writing and check whether the officer has considered your reconciliation. A rejection is not the end of the matter, but it changes the forum and the penalty exposure.

If you miss the deadline and face DRC-01A

Missing the ASMT-11 deadline does not create a fresh tax; it weakens your position because the officer may decide on the material available. In a scrutiny, the officer can proceed under section 73 or 74. Before a show-cause notice, the department may issue FORM GST DRC-01A under Rule 142(1A). DRC-01A is a pre-show-cause intimation of tax ascertained, with Part A setting out the amount and Part B for your response or payment. It is not a final order, but it is a serious warning.

If DRC-01A arrives, do not ignore it. Reconcile the amount, file Part B with your explanation, and pay only the undisputed portion with interest. If you agree, pay through the portal and file the intimation. If you disagree, give a concise reply with the documents. The next step can be DRC-01, the show-cause notice, where you get a formal opportunity to respond.

Documents to keep and common mistakes

Keep a scrutiny file for each financial year. It should contain the ASMT-10, ASMT-11, acknowledgements, reconciliation statements, GSTR-1 and GSTR-3B extracts, GSTR-2B, e-invoice IRN list, sales and purchase ledgers, credit notes, debit notes, e-way bills, payment challans, and correspondence with the officer. If a supplier has delayed filing, keep proof of follow-up. If you have reversed ITC, keep the reversal working.

Common mistakes: treating ASMT-10 as a demand and paying the entire amount without checking; filing a one-line reply without a reconciliation; marking "accepted" for the whole notice; uploading illegible PDFs; missing the 30-day window; and ignoring a DRC-01A because it is not called a show-cause notice. Another mistake is mixing tax periods. A credit note from August cannot explain a July mismatch unless you show the August return.

The next action is simple: download the ASMT-10 today, open a working sheet, and reconcile the first tax period before the 30-day clock runs out. If the numbers are complex, get a CA to prepare the reconciliation statement, but keep the reply factual and document-led. This article is for general information only and is not legal advice. Consult a qualified professional for your specific facts.