If your Input Tax Credit (ITC) claimed in GSTR-3B is higher than the ITC reflected in GSTR-2B, the GST department will issue a scrutiny or demand notice under Section 61 or Section 73/74 of the CGST Act, 2017. This notice is extremely common in 2026, as GST authorities have automated ITC mismatch detection across all registered taxpayers. Ignoring it can lead to demand orders, interest at 18% per annum, and penalties up to 100% of the tax amount.

• Who receives it: Any GST-registered business that claimed more ITC in GSTR-3B than what suppliers have reported in their GSTR-1 (reflected in your GSTR-2B).
• Key risk: Demand of excess ITC with 18% interest plus penalty if not responded to properly.
• Resolution window: Typically 15-30 days from notice date to file a reply.

What Is a GSTR-3B vs GSTR-2B ITC Mismatch?

GSTR-2B is an auto-generated static statement that shows the ITC available to you based on what your suppliers have declared in their GSTR-1 or IFF (Invoice Furnishing Facility). GSTR-3B is your monthly self-declaration return where you report the ITC you are actually claiming.

A mismatch arises when the ITC you claim in GSTR-3B Table 4 exceeds the ITC shown in your GSTR-2B for the same tax period. The GST department's ADVAIT (Advanced Analytics in Indirect Taxation) system automatically flags such discrepancies and triggers notices.

Common reasons for this difference include:

• Supplier filed GSTR-1 late or not at all.
• You claimed ITC on invoices not yet reflected in GSTR-2B (e.g., for the previous month).
• Incorrect GSTIN or invoice details entered by the supplier.
• ITC claimed on ineligible items under Section 17(5) of CGST Act.
• Transitional ITC or TRAN-1 credits mixed up in reporting.
• ITC claimed before the goods or services were actually received.

Legal Provisions Behind This Notice

The GST department can issue notices under multiple provisions depending on the nature and magnitude of the mismatch:

Section	Nature of Action	Applicable When	Penalty
Section 61, CGST Act	Scrutiny Notice (ASMT-10)	Discrepancy found in return filed	No penalty, explanation required
Section 73, CGST Act	Show Cause Notice (SCN)	Non-fraud ITC excess claim	Up to 10% of tax or ₹10,000 (whichever is higher)
Section 74, CGST Act	Show Cause Notice (SCN)	Fraud / willful misstatement	Up to 100% of tax amount
Rule 86A, CGST Rules	Blocking of ITC in Electronic Credit Ledger	Fraudulent or ineligible ITC suspected	ITC blocked until investigation

Most routine ITC mismatch notices in 2026 are issued under Section 61 as ASMT-10 notices. However, if the mismatch is large or repeated, the department may escalate to Section 73 or Section 74 proceedings.

Types of Notices Issued for ITC Mismatch

1. ASMT-10 (Scrutiny Notice under Section 61)

This is the most common form of notice for GSTR-3B vs GSTR-2B ITC differences. The GST officer asks you to explain the discrepancy. You must reply using Form ASMT-11 within the time stipulated in the notice (usually 15 days, extendable).

2. DRC-01 / DRC-01A (Demand Notice under Section 73/74)

If the officer is not satisfied with your ASMT-11 response, or if no response is filed, the matter is escalated and a demand notice is issued via DRC-01. A summary of the notice in DRC-01C is also sent for ITC-specific mismatches identified through GSTR-2B auto-comparison. You must reply in DRC-01B to explain why your ITC claimed exceeds GSTR-2B.

3. DRC-01C (New ITC Mismatch Notice)

Introduced specifically to address ITC differences between GSTR-2B and GSTR-3B, the DRC-01C notice requires the taxpayer to either pay the differential ITC amount with interest or provide a valid explanation for the excess claim. This must be responded to in Form DRC-01D.

Step-by-Step: How to Respond to the Notice (2026)

Responding correctly and on time is critical to avoid demand confirmation and penalties. Here is the process:

1. Download the Notice: Log in to the GST portal at gst.gov.in, go to Services > User Services > View Notices and Orders.
2. Identify the Mismatch: Compare your GSTR-3B Table 4 entries with GSTR-2B for the relevant tax period. Note invoices present in your books but missing from GSTR-2B.
3. Categorize the Differences: Segregate the mismatch into: (a) timing differences where supplier filed late, (b) genuine ineligible ITC, (c) data entry errors.
4. Collect Supporting Documents: Gather purchase invoices, e-way bills, payment proofs, and supplier communication confirming the supply.
5. Draft Your Reply: For ASMT-10, reply in ASMT-11. For DRC-01C, reply in DRC-01D on the portal. Attach all supporting documents. For timing differences, cite Rule 36(4) and Section 16(2)(aa) to justify the claim.
6. Pay Differential Tax (If Applicable): If any ITC is genuinely ineligible, voluntarily reverse it in GSTR-3B and pay interest at 18% per annum to avoid penalty escalation.
7. Submit the Reply: Submit the reply using your DSC or EVC on the GST portal before the deadline mentioned in the notice.

Missing the deadline means the officer can pass an ex-parte order confirming the demand, which is much harder and costlier to contest.

Valid Justifications for ITC Exceeding GSTR-2B

Not every mismatch means you have wrongly claimed ITC. The following are legally defensible grounds:

• Supplier filed GSTR-1 late: You can claim ITC in the period you receive the goods/services, even if the supplier's GSTR-1 was late. Cite Section 16(2) and provide invoice copies.
• GSTR-2B not yet updated: GSTR-2B is generated on the 14th of the following month. ITC from invoices uploaded by suppliers after this date will appear in the next month's GSTR-2B.
• Amendments by supplier: A supplier amending an invoice in GSTR-1A may cause the ITC to shift between months in GSTR-2B.
• Import of goods (IGST paid at customs): ITC on imports flows through ICEGATE and may not immediately reflect in GSTR-2B but is still claimable.
• ISD (Input Service Distributor) credits: Credits distributed via ISD are reflected differently and may not match GSTR-2B directly.

Consequences of Not Responding

Failing to respond to a GST notice for ITC mismatch has serious financial and legal consequences:

Consequence	Details
Demand Confirmation	Officer passes ex-parte order confirming the entire ITC demand
Interest at 18% p.a.	Charged from the date of excess ITC claim until payment
Penalty	10% to 100% of tax depending on Section 73 or 74
ITC Blocking (Rule 86A)	Electronic Credit Ledger blocked, affecting future tax payments
GST Registration Cancellation	Possible in extreme cases of non-compliance

How to Avoid Future GSTR-3B vs GSTR-2B Mismatches

• Reconcile GSTR-2B with your purchase register every month before filing GSTR-3B.
• Follow up with suppliers who haven't filed their GSTR-1 on time.
• Do not claim ITC on invoices not yet in GSTR-2B unless you can document the eligibility under Section 16(2).
• Maintain a proper ITC register with invoice-level details, payment records, and receipt proofs.
• Use automated GST reconciliation software or engage a compliance expert for monthly review.
• For blocked credits under Section 17(5), maintain a separate ineligible ITC ledger and never route those to GSTR-3B Table 4.

You can also check Taxocity's guide on how to handle GST notices when ITC is claimed but supplier hasn't filed GSTR-3B and responding to scrutiny notices for discrepancies in GST returns for related scenarios.

How Taxocity Helps You Respond to GST Notices

Taxocity has been handling GST compliance and notices for businesses for over three decades. With a 4.8/5 rating from 5,000+ clients, our team of real human GST experts provides end-to-end support, from notice analysis to drafting replies and representing you before the GST department.

Our approach to ITC mismatch notices includes:

• Complete reconciliation of GSTR-2B vs GSTR-3B for all disputed periods.
• Legal drafting of ASMT-11, DRC-01B, and DRC-01D replies with documentary support.
• Voluntary ITC reversal with interest calculation to minimize penalty exposure.
• Representation before the GST adjudicating authority if proceedings escalate.
• 100% compliance guarantee and dedicated expert assigned to your case.

Whether it is a simple scrutiny notice or a Section 74 fraud allegation, our experts ensure your reply is legally sound, factually accurate, and submitted on time.

You can also explore our GST Filing services to ensure your future returns are filed correctly and avoid recurrence of such notices. If you need to regularize your GST registration status, visit our GST Registration page. For ITC issues related to ineligible items, read our detailed guide on GST notices for ITC on ineligible items under Section 17(5).

Key Takeaways

1. A GST notice for GSTR-3B vs GSTR-2B ITC difference is issued when your claimed ITC exceeds the auto-populated GSTR-2B credit.
2. The most common notice type is ASMT-10 (scrutiny), but it can escalate to DRC-01C or Section 73/74 demand proceedings.
3. You must respond within the time limit mentioned in the notice, typically 15-30 days, using the prescribed form on the GST portal.
4. Valid defenses include supplier late filing, import ITC timing, and ISD credit distribution differences.
5. Non-response leads to an ex-parte demand order with 18% interest and up to 100% penalty.
6. Monthly GSTR-2B reconciliation is the most effective preventive measure.

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Disclaimer: This article is intended for informational purposes only and does not constitute tax advice. GST laws are subject to amendments and individual circumstances vary. Please consult a qualified GST practitioner or tax advisor before taking any action based on this content.