ASMT-10 : GST Notice

ASMT-10 GST Notice

30-Day Reconciliation Checklist for Exporters & Manufacturers

Prepared by CA Dhiraj Ostwal | GST & Business Advisory | CA Dhiraj Ostwal & Associates

 

A. What is ASMT-10 — and Why You Cannot Ignore It

An ASMT-10 notice is issued by the GST department under Section 61 of the CGST Act when their system detects a discrepancy in your filed returns — typically a mismatch between GSTR-1, GSTR-3B, and GSTR-2B. For exporters and manufacturers with high ITC volumes, this notice arrives more often than you may expect. The department's AI-based scrutiny engine runs 24/7. It compares your outward supply declarations, your IT claims, and what your suppliers have reported. If the numbers  don't align — even due to a timing difference — an ASMT-10 lands in your GST portal inbox. Ignoring or under-responding to this notice is where most businesses hurt themselves. A generic or incomplete reply can trigger ITC reversal, 18% interest on the disputed amount, and penalties ranging from ?25,000 up to ?5,00,000. Future returns and refund claims can also come under increased scrutiny.

? Critical: You have exactly 30 days from the notice date to submit your reply. Missing this deadline or filing an incomplete response almost always worsens the situation.

B. Step 1 — Basic Sanity Checks (Do This First)

Before you open a single spreadsheet, verify the notice itself:

• Confirm the notice number, GSTIN, and the tax period it covers.
• Note the issuing officer's name, designation, and jurisdictional range.
• Check the exact due date for reply — count calendar days, not working days.
• Confirm the mode of communication: GST portal inbox, email, or physical service.
• Download and save the original notice PDF from the GST portal immediately.
• Identify the specific discrepancy mentioned — is it outward supplies, ITC, or export turnover?
• Check whether this is a standalone notice or part of a series of assessments for multiple periods.

Common mistake: Many taxpayers assume the notice will "go away" or that their return filing is sufficient protection. Yahi galti sabse zyada hoti hai. A filed return and a replied notice are two completely different things.

C. Step 2 — GSTR-1, 3B, and 2B Reconciliation Checklist

C1. Outward Supplies — GSTR-1 vs. GSTR-3B

• Download GSTR-1 and GSTR-3B for the relevant period(s) from the GST portal.

• Prepare a table comparing taxable turnover, tax-free turnover, and zero-rated exports declared in each return.
• Identify invoices or credit notes reported in GSTR-1 but not reflected in GSTR-3B (Table 3.1).
• Flag the reverse — amounts in GSTR-3B that are higher or lower than GSTR-1 declarations.
• Quantify the exact tax impact of each mismatch (CGST, SGST, IGST separately).
• For amendments filed in later periods, trace them back and mark them as timing differences, not genuine errors.

C2. ITC Claimed — GSTR-3B vs. GSTR-2B

• Download GSTR-2B for the relevant period and compare with ITC claimed in GSTR-3B (Table 4).
• Flag all suppliers whose invoices appear in your books but are absent from GSTR-2B.
• Classify the reason for each missing invoice: late supplier filing, wrong GSTIN, cancelled invoice, or genuine error.
• Check whether you have claimed ITC beyond the 2B-reflected amount — this is a primary trigger for ASMT-10.
• Identify RCM liabilities declared and ITC availed on the same — confirm the offset treatment.

C3. Export Turnover and Zero-Rated Supplies

• Match shipping bills against GSTR-1 Table 6A (exports under LUT) and Table 6B (IGST paid exports).
• Verify that FIRC/BRC has been received for all foreign currency remittances against exports.
• Confirm that LUT/Bond was valid and active for the period under scrutiny.
• Reconcile refund claims filed (IGST paid or accumulated ITC) against exports declared in GSTR-1.

Pro-tip: Build a single master Excel sheet with GSTR-1, 3B, and 2B side by side using VLOOKUP or Power Query. The department expects to see this; presenting it proactively shows you are in control of your numbers.

D. Step 3 — Document Checklist: What to Keep Ready

D1. Sales / Outward Side

• All GST tax invoices for the period (soft copies, organised by invoice number).

• Export shipping bills with customs-certified copies where applicable.

• Copy of Letter of Undertaking (LUT) or Bond filed with the jurisdictional authority.

• FIRC / BRC for all export realisation — bank-certified copies preferred.

• E-way bills for high-value domestic supplies where applicable.

• Debit/credit notes issued during the period and their accounting entries.

D2. Purchase / ITC Side

• Purchase invoices for all ITC claimed — original or scanned copies with supplier GSTIN.

• E-way bills for inward supplies above the threshold limit.

• Payment proofs (bank statements, RTGS/NEFT confirmations) for all purchases where ITC is claimed.

• Supplier reconciliation statements — including communications to vendors who filed late.

• Goods receipt notes or delivery challans for physical goods received.

D3. Additional / Correspondence

• All prior correspondence with the GST department for this GSTIN and period.

• Any earlier show-cause notices, replies filed, or assessment orders for overlapping periods.

• CBIC circulars or department notifications relevant to the nature of the discrepancy.

E. Step 4 — Analytical Checks Before Drafting Your Reply

Before you write a single word of your reply, complete this analysis:

• Quantify the exact ITC or tax amount disputed by the department versus your own working — rupee for rupee.
• Categorise each mismatch as: (a) Genuine error on your part, (b) Timing difference — supplier filed late, (c) Department's misreading of your data.
• Decide clearly which mismatches you will accept and reverse, and which you will contest with documentary support.
• For items you are reversing, prepare DRC-03 (voluntary tax payment) before or alongside your reply — this demonstrates good faith.
• For items you are contesting, prepare a concise written explanation for each, supported by invoice numbers, dates, and supplier details.
• Preserve all working papers and Excel reconciliations. These become evidence if the matter escalates to adjudication.

Common mistake: Do not admit liability casually in the opening lines of your reply. A poorly worded admission — even for a small amount — can be used to confirm demand for the full disputed amount.

F. Step 5 — Drafting the Reply: What to Include

A proper ASMT-10 reply is not a letter — it is a structured submission. At a minimum, it should contain:
• Reference to the notice number, GSTIN, tax period, and the specific discrepancy raised.
• A brief factual background of the business — nature of operations, export / domestic split, ITC volume.
• A summary reconciliation table showing the department's observation, your working, and the net difference.
• Explanation of each reconciling item — timing differences, amendments, supplier defaults — with supporting document references.
• Confirmation of any voluntary reversal made via DRC-03, with challan reference.
• A complete annexure list: invoices, bank statements, e-way bills, FIRC/BRC, LUT, and any other attachments.
• A polite closing line requesting that the proposed demand be dropped or adjusted to the extent of the reconciliation.

Pro-tip: Keep the reply factual and numbered. Officers deal with hundreds of replies; a well-structured submission with a clear summary table is read more carefully and resolved faster than a narrative letter.

G. Pro-Tips & Red Flags

Pro-Tips

• Do not submit an incomplete reconciliation hoping the department will "figure it out." Incomplete working invites further notices.
• Cross-check all figures with your books of accounts — ITR, balance sheet, and GST returns should tell one consistent story.
• If your supplier has filed late and the invoice is now reflected in a subsequent 2B period, include proof of that filing date.
• Maintain a log of all filings, payment challans, and correspondence with a date and reference number — this becomes invaluable during scrutiny.
• When in doubt on any technical point — especially on export ITC refunds, RCM, or transitional credit —consult a professional before filing the reply.

• File the reply well before the 30-day deadline — portal technical issues at the last minute are not accepted as grounds for extension.

Red Flags That Increase Risk of ITC Reversal

• One or more suppliers on your purchase list are non-filers or have been suspended on the GST portal.
• ITC claimed in the current year shows a significant jump versus the previous year without a proportionate increase in turnover.
• Invoices without corresponding e-way bills for goods that ordinarily require one.
• Payment to suppliers made in cash or through third-party accounts — not through your business bank account.
• Mismatches that carry forward across multiple tax periods without prior clarification.

H. Quick Checklist — 15 Points Before You Submit Your Reply

Use this as a final quality check before uploading your reply on the GST portal:

? 1. Notice details confirmed: GSTIN, period, due date, officer name.
? 2. Original notice downloaded and saved from the GST portal.
? 3. GSTR-1, 3B, and 2B downloaded and reconciled for the disputed period.
? 4. Master reconciliation Excel prepared with all three returns side by side.
? 5. Each mismatch categorised: genuine error / timing difference / department's error.
? 6. Decision made on what to accept (reverse) and what to contest (defend).
? 7. DRC-03 filed for all amounts being voluntarily reversed, challan in hand.
? 8. All sales-side documents ready: invoices, shipping bills, LUT, FIRC/BRC.
? 9. All ITC-side documents ready: purchase invoices, e-way bills, payment proofs.
? 10. Supplier reconciliation prepared; non-filers and late filers separately noted.
? 11. Reply draft reviewed for accuracy — no casual admissions, no unsupported claims.
? 12. Summary reconciliation table included in the reply body.
? 13. All annexures numbered, labelled, and referenced in the reply.
? 14. Reply checked against GSTIN — no data from the wrong period or entity.
? 15. Reply submitted on the GST portal at least 3 days before the due date.

 

I. What Next?

Save this checklist and share it with your finance team or CFO — it is most useful when the entire accounts team is aligned before the reply is drafted.

If you have already received an ASMT-10 and need a professional review of your reply — or if you want a detailed reconciliation template tailored to your business — reach out directly:

CA Dhiraj Ostwal | GST & Business Advisory