GST Notice Flood Before December 31, 2023 for FY 2017-18; March 31, 2025 for FY 2018-19; March 31, 2026 for FY 2019-20: What CAs Must Know About the COVID Limitation Deadline

If your firm has been inundated with GST show cause notices in the last few months, you are not alone. Across India, GST officers are racing to issue notices for the earliest GST years — FY 2017-18, 2018-19, and 2019-20 — before the COVID-extended limitation periods expire on March 31, 2026. This rush has created an unprecedented volume of notices, many of which are procedurally deficient, factually incorrect, or issued without adequate application of mind.

For Chartered Accountants, this represents both a challenge and an opportunity. The challenge is the sheer volume. The opportunity lies in the fact that many of these notices are legally vulnerable — issued under time pressure with template-based allegations that do not survive scrutiny. This guide explains the legal framework, identifies the most common notice types, and provides practical defense strategies.

The Legal Background: How COVID Extended GST Limitation

The Original Limitation Framework

Under Section 73 of the CGST Act 2017, the time limit for issuing a show cause notice for non-fraud cases is three years from the due date of filing the annual return for the relevant financial year. Under Section 74 (fraud/suppression cases), the limit is 4.5 years.

For FY 2017-18, the annual return (GSTR-9) due date was February 7, 2020 (after multiple extensions). This means:

• Section 73 notices: Should have been issued by December 31, 2022
• Section 74 notices: Should have been issued by December 31, 2024

Section 168A: The COVID Extension

Section 168A of the CGST Act, inserted by the Taxation and Other Laws (Relaxation and Amendment of Certain Provisions) Act 2020, empowered the government to extend time limits for actions under the GST law due to force majeure — specifically, the COVID-19 pandemic.

Through a series of notifications (Notifications 35/2020, 14/2021, 15/2021, and subsequent ones), the government extended the time limits as follows:

Financial Year	Original Section 73 Deadline	Extended Deadline
FY 2017-18	December 31, 2022	March 31, 2024 (extended further to March 31, 2026)
FY 2018-19	March 31, 2023	March 31, 2025 (extended further to March 31, 2026)
FY 2019-20	December 31, 2023	March 31, 2026

The key notification is Notification No. 09/2023-CT extended deadlines to March 31, 2024 for FY 2017-18; March 31, 2024 for FY 2018-19; June 30, 2024 for FY 2019-20, which extended the time limit for issuing orders (not just notices) under Section 73 for these three financial years to March 31, 2024, then further extended to March 31, 2025, and ultimately March 31, 2026 through subsequent amendments.

The Critical Distinction: Notice vs. Order

Under Section 73(2), the proper officer must issue a show cause notice at least three months before the deadline for issuing the order. This means:

• If the order deadline is March 31, 2026, notices must be issued by September 30, 2023 for FY 2017-18; December 31, 2023 for FY 2018-19; March 31, 2024 for FY 2019-20
• Notices issued after December 31, 2025 for these FYs may not leave sufficient time for the statutory three-month gap before the order

However, many officers are interpreting the extended deadline as applying to both notices and orders, and are issuing notices as late as February-March 2026. This creates a jurisdictional challenge that CAs should note and raise where applicable.

Types of Notices Being Issued in the March 2026 Rush

1. DRC-01: Show Cause Notice Under Section 73/74

This is the formal show cause notice demanding tax along with interest and penalty. The common allegations in the current batch include:

• ITC mismatch: Difference between GSTR-3B and GSTR-2A/2B for FY 2017-18 and 2018-19, when GSTR-2A was not a reliable document and auto-population had known errors
• Outward supply differences: Mismatch between GSTR-1 and GSTR-3B, often due to amendments, credit notes, or timing of reporting
• ITC on blocked credits: Retrospective application of Rule 86A or Section 17(5) interpretations
• E-way bill discrepancies: Goods moved without or with expired e-way bills
• Non-payment of reverse charge: Under Section 9(3) and 9(4) for specified services

2. ASMT-10: Scrutiny Notice

Form ASMT-10 is issued for scrutiny of returns under Section 61. While less severe than a DRC-01 (it is a request for information and explanation, not a demand), ASMT-10 notices require careful response because an unsatisfactory reply leads to a DRC-01.

Common ASMT-10 triggers in the current batch:

• GSTR-9 and GSTR-9C (audit reconciliation) discrepancies
• High ratio of ITC to output tax
• Mismatch between GSTR-1 and GSTR-3B
• Late filing penalties and interest computation

3. DRC-01A: Intimation Before SCN

Introduced to encourage voluntary compliance, DRC-01A is an intimation issued before the formal show cause notice. The taxpayer can pay the amount or file a reply explaining the discrepancy. While theoretically a lighter touch, in the current rush many officers are issuing DRC-01A and DRC-01 almost simultaneously, defeating the purpose of the pre-notice intimation.

4. RFD-08: Show Cause for Refund Rejection

For refund claims filed during FY 2017-20 that were processed but where the department now believes the refund was incorrectly granted, recovery notices are being issued under Section 73 read with the refund provisions.

Why Many of These Notices Are Legally Vulnerable

1. Mechanical Issuance Without Application of Mind

The Supreme Court in CCE vs. Brindavan Beverages (2007) and the GST Council's own guidelines require that show cause notices be issued after proper application of mind — not as template-generated, mass-issued documents. When an officer issues hundreds of notices in the last few weeks before a deadline, the inference of non-application of mind is strong.

Defense strategy: Check if the notice contains generic, copy-paste allegations without reference to the specific taxpayer's facts. If the notice merely reproduces system-generated data without any independent analysis, challenge it on grounds of non-application of mind.

2. GSTR-2A Cannot Be the Sole Basis for ITC Denial (FY 2017-18 and 2018-19)

For the early GST years, GSTR-2A was not a reliable or complete document because:

• The return filing system was still evolving
• Many suppliers filed late or filed corrections
• The GSTR-2A was auto-populated and could not be manually corrected by the recipient
• Section 16(2)(aa) — which ties ITC to GSTR-2A/2B reflection — was inserted only with effect from January 1, 2022

Multiple High Courts have held that ITC cannot be denied solely based on GSTR-2A mismatch for the early GST period. Key decisions include:

• Suncraft Energy Pvt. Ltd. vs. ACGST (Calcutta HC, 2023): GSTR-2A is merely a facilitating mechanism, not a condition precedent for ITC
• D.Y. Beathel Enterprises vs. State Tax Officer (Madras HC, 2023): ITC denial based solely on GSTR-2A mismatch is unsustainable
• LGW Industries vs. Union of India (Calcutta HC, 2022): GSTR-2A is a unilateral document; ITC cannot be denied without verifying with the supplier

3. The Three-Month Gap Violation

As noted above, Section 73(2) requires the show cause notice to be issued at least three months before the order deadline. If the order deadline is March 31, 2026, and the notice was issued after December 31, 2025, there is a procedural violation.

Several High Courts have held that this three-month gap is mandatory, not directory. In Satyam Infoway vs. Commissioner and similar cases, notices issued without the mandatory gap have been quashed.

4. Section 168A Validity Challenges

The extension of limitation through Section 168A has itself been challenged on the ground that COVID-19 cannot justify extending limitation periods for six or more years after the pandemic ended. While no Supreme Court ruling has definitively settled this, several High Court writ petitions have raised this issue, and favorable observations have been made in some interim orders.

5. Vague and Ambiguous Allegations

A show cause notice must clearly specify the grounds for the demand so the noticee can meaningfully respond. Notices that merely state "ITC mismatch of Rs X" without specifying which invoices, which suppliers, or which months are involved are vulnerable to challenge.

The Supreme Court in Oryx Fisheries Pvt. Ltd. vs. Union of India (2010) held that a vague show cause notice violates principles of natural justice.

How to Respond to Mass Notices: A Practical Framework

Step 1: Triage and Prioritize

With potentially dozens of notices arriving simultaneously, triage is essential:

• High priority: DRC-01 notices with large demands and short reply deadlines
• Medium priority: ASMT-10 scrutiny notices (typically allow 15 days, extendable)
• Lower priority: DRC-01A intimations (allow partial payment or response)

Step 2: Check Limitation

For every notice, verify:

• Which financial year is covered?
• What is the applicable limitation period (Section 73 or 74)?
• Was the notice issued within the extended time limit?
• Is the three-month gap between notice and order deadline satisfied?

If the notice is time-barred, this is a threshold jurisdictional challenge that can be raised as a preliminary objection.

Step 3: Verify the Factual Basis

Many notices in the current batch are based on automated data matching. Verify:

• Does the GSTR-2A mismatch still exist, or was it resolved by subsequent supplier filings?
• Is the GSTR-1 vs. GSTR-3B difference explained by amendments or credit notes?
• Has the ITC in question been reversed in a subsequent period?

Step 4: Prepare the Reply

Structure the reply with:

1. Preliminary objections: Limitation, lack of jurisdiction, non-application of mind, violation of natural justice
2. Factual response: Detailed reconciliation with supporting documents
3. Legal citations: Relevant High Court and ITAT decisions
4. Prayer: Dropping of the proceedings; alternatively, personal hearing before any adverse order

Step 5: Request Adjournments Strategically

If the officer is rushing to pass the order before March 31, 2026, request an adjournment. If the order cannot be passed by the deadline, the proceedings may become time-barred. However, be cautious — some officers may pass ex-parte orders if you seek multiple adjournments.

Key Procedural Challenges to Raise

1. No personal hearing granted before issuing SCN or passing an order
2. DRC-01 issued without prior DRC-01A (where the Council's instructions require it)
3. Contradictory allegations in the SCN (e.g., alleging both Section 73 and 74 simultaneously)
4. Wrong jurisdictional officer issued the notice (especially in cases of central vs. state jurisdiction)
5. Electronic notice not served properly — check if it was uploaded on the GST portal in the correct tab

How AI Tools Can Help Handle the Notice Flood

The March 2026 notice rush means many CA firms are dealing with 5-10 times their normal volume of GST notices. Manual processing of each notice — reading, classifying, researching applicable law, and drafting a response — is simply not feasible at this scale.

TaxNoticeAI is designed for exactly this scenario. Upload the DRC-01 or ASMT-10 notice, and the system will automatically classify the notice type, identify the specific allegations (ITC mismatch, outward supply difference, etc.), check limitation period applicability, and generate a draft response citing the most relevant High Court and Tribunal decisions.

For the current wave of COVID-period notices, the system's legal corpus includes the key limitation period decisions, GSTR-2A reliability case laws, and Section 168A challenges that are most commonly applicable. This allows CAs to process a high volume of notices without sacrificing the quality of individual responses — each draft is tailored to the specific allegations in the notice, not a generic template.

The volume challenge is real, but with the right tools and a systematic triage approach, CAs can protect their clients' interests even in the face of an unprecedented notice flood.