GST Section 73 Demand Notice: Complete Response Guide 2026

If a GST demand notice just landed in your GST portal inbox — or your client called in a panic because one landed in theirs — you are not alone. Since late 2025, tax officers across India have been issuing Section 73 demand notices for financial years 2022-23 and 2023-24 at an unprecedented pace, driven by systematic GSTR-1 vs GSTR-3B mismatches, excess ITC claims flagged by GSTR-2B reconciliation, and RCM liabilities that slipped through during the GST learning curve years.

The good news: Section 73 specifically covers cases where there is no allegation of fraud or deliberate evasion. That means you have a structured, time-bound process to resolve the matter — often paying less than the full demand if you act quickly. This guide walks you through every step, from the pre-notice communication stage through the adjudication order, with the exact penalty percentages and timelines that determine how much you ultimately pay.

What Is Section 73 of the CGST Act?

Section 73 of the Central Goods and Services Tax Act, 2017 governs demand and recovery in cases where:

• Tax has not been paid or has been short paid
• Tax has been erroneously refunded
• Input Tax Credit (ITC) has been wrongly availed or utilised

Critically, Section 73 applies only where the demand does NOT involve fraud, willful misstatement, or suppression of facts. That distinction matters enormously: Section 73 carries a maximum penalty of 10% of the tax demanded (or ₹10,000, whichever is higher), while its counterpart Section 74 — which covers fraud — carries a 100% penalty. If your client received a notice without any fraud allegations, Section 73 is the applicable provision.

Section 73 vs Section 74: The Line That Changes Everything

If the notice you received cites Section 73, your exposure is substantially lower than it would be under Section 74.

The Section 73 Demand Process: Three Critical Windows

The GST demand process has three stages, and your penalty depends entirely on which stage you pay at.

Stage 1 — Pre-Notice Communication (DRC-01A): The Zero-Penalty Window

Before issuing a formal Show Cause Notice, the tax officer must issue a pre-notice intimation using Form DRC-01A. This step is your golden opportunity. If you pay the full tax demanded plus 18% interest (Section 50) within 30 days of receiving DRC-01A, the case is closed with zero penalty.

For example: your client received a DRC-01A for FY 2022-23 for ₹8 lakh in excess ITC claimed. If they pay ₹8 lakh + ₹2.88 lakh interest (18% × 2 years) = ₹10.88 lakh within 30 days, no penalty is levied and the case is settled.

Unfortunately, many taxpayers miss this window because DRC-01A notifications appear only on the GST portal and are not sent via email or SMS. Make it a habit to check your clients' GST portal dashboards regularly — or set up corpus's automated compliance notification so alerts land in your practice dashboard instead.

Stage 2 — Show Cause Notice (DRC-01): The 25% Penalty Window

If the DRC-01A goes unanswered or the taxpayer disagrees, the officer issues a formal Show Cause Notice in Form DRC-01. From this point, you have 30 days to:

• Pay the tax + interest + 25% of the tax as penalty, OR
• File a reply disputing the demand

If you pay within this 30-day window, the case is settled at 25% penalty. On the same ₹8 lakh example: tax (₹8L) + interest (₹2.88L) + 25% penalty (₹2L) = ₹12.88 lakh total liability.

Stage 3 — After the Adjudication Order (DRC-07): The 10% Penalty Cap

If neither Stage 1 nor Stage 2 results in payment or settlement, the officer passes an Order in Form DRC-07 after adjudication. At this stage, if you pay within 30 days of the order, the penalty is 10% of the tax demand (or ₹10,000 minimum). The catch: you lose the right to pay at reduced penalty percentages — you pay the full penalty the officer determines, subject to the 10% ceiling.

The 30-day payment window after DRC-07 also determines appeal eligibility. If you intend to appeal to the Appellate Authority under Section 107, you must pre-deposit 10% of the disputed tax as per the revised provisions.

Most Common Reasons GST Section 73 Notices Are Issued

Based on patterns across practices, these are the five scenarios generating the most Section 73 notices in 2025-26:

1. GSTR-1 vs GSTR-3B Mismatch

Your outward supplies in GSTR-1 show ₹12 lakh in tax payable for a quarter, but GSTR-3B shows ₹10.5 lakh paid. The ₹1.5 lakh difference triggers a system-generated alert that feeds into a demand notice. Common causes: invoice corrections made in GSTR-1 that were not reflected in GSTR-3B, or credit notes issued after GSTR-3B filing.

2. Excess ITC Claim vs GSTR-2B

The most prolific source of Section 73 notices: ITC claimed in GSTR-3B Table 4 exceeds what is reflected in GSTR-2B. If your supplier filed their GSTR-1 late, your GSTR-2B will be short — but if you claimed ITC anyway, the system flags it. Under the Invoice Management System (IMS) rules, ITC beyond GSTR-2B is now harder to justify without specific approval.

3. RCM Liability Not Discharged

Businesses liable to pay GST under Reverse Charge Mechanism (RCM) under Section 9(3) or 9(4) who missed depositing the tax on import of services, legal fees, goods transport agency charges, or director remuneration. The amounts are often identified by matching Form 26AS professional fee payments against GST RCM declarations.

4. Wrong Rate Applied

Applying 5% GST on a service that should attract 18%, or using an incorrect HSN code that carries a lower rate. This is common in mixed transactions and in the hospitality, construction, and logistics sectors where rate complexity is high.

5. Exports Without Valid LUT

Export of services or goods without paying IGST and without a valid Letter of Undertaking (LUT) on record, technically resulting in full tax liability on what should have been zero-rated supplies.

How to Respond to a Section 73 Notice: Step-by-Step

Step 1: Log in to the GST portal and navigate to Services → User Services → View Notices and Orders. Download the DRC-01 notice and all annexures carefully.

Step 2: Analyse the demand item by item. The notice will specify each head of demand — excess ITC, short tax payment, RCM default — with the period, amount, and interest computed. Go through each line against your books and GSTR returns.

Step 3: Segregate agreed vs disputed items. You may agree that ₹2.5 lakh in ITC was overstated but dispute ₹1.2 lakh that has full documentary support. You are permitted to pay the agreed portion via DRC-03 while contesting the rest in your DRC-06 reply.

Step 4: For the agreed portion, pay using Form DRC-03. On the GST portal, go to Services → Ledgers → Payment Towards Demand (DRC-03). Select the relevant ARN or order reference and pay tax + interest + penalty (25% if within 30 days of SCN).

Step 5: File your reply using Form DRC-06. Navigate to Services → User Services → My Applications → Select the appropriate ARN → Reply. Attach: reconciliation statements, supplier invoices, GSTR-2B printouts, bank statements proving payment to suppliers, and any other documentary evidence. A vague reply invites an adverse order.

Step 6: Request a personal hearing in your DRC-06 reply. The adjudicating officer must grant at least one hearing before passing an order. State this request explicitly in writing.

Step 7: Attend the hearing with prepared, indexed submissions. Bring physical copies of all supporting documents organised by demand item. If the officer is unable to hear you that day, request an adjournment — taxpayers are entitled to one adjournment as of right.

Step 8: After the order in DRC-07, if you accept the decision, pay within 30 days. If you dispute it, file an appeal to the Appellate Authority (Commissioner Appeals) within 3 months using GST APL-01, with pre-deposit of 10% of the disputed tax.

How to Calculate Interest Under Section 50

Interest on GST demands runs at 18% per annum on unpaid tax. For wrongly availed ITC, the rate is 24% per annum from the date of availment to the date of payment.

Formula: Interest = (Tax amount × Rate × Number of days) ÷ 365

Example: ₹5 lakh ITC wrongly availed on April 15, 2023, paid on July 30, 2026 (837 days):

Interest = ₹5,00,000 × 24% × 837 ÷ 365 = ₹2,75,671

Total payment = ₹5,00,000 + ₹2,75,671 = ₹7,75,671 (plus applicable penalty)

The interest component on a demand that is 2–3 years old often exceeds the original tax demand. Acting at Stage 1 (DRC-01A) rather than Stage 3 (post-order) saves both the penalty and several months of additional interest accumulation.

Common Mistakes That Inflate Section 73 Demands

Missing the DRC-01A pre-notice: The single most costly mistake. Taxpayers who don't check the GST portal regularly miss the zero-penalty window and pay 25% more with no benefit.

Filing a vague reply: A DRC-06 that simply says "the demand is incorrect" without evidence is routinely rejected. Your reply should address each demand item with a specific reconciliation and supporting document reference.

Treating the notice as all-or-nothing: You can accept partial liability and contest the rest. Agreeing to what is owed demonstrates good faith and often influences the adjudication on contested items.

Confusing Section 73 with Section 74: If the notice cites Section 74, do not make voluntary payments without legal analysis — a payment can sometimes be construed as an admission of fraud, complicating your defence.

Missing the 30-day reply deadline: The window to reply to DRC-01 is not automatically extendable. A missed deadline results in an ex parte order that is significantly harder to contest on appeal.

Paying penalty or interest from the Electronic Credit Ledger: GST law explicitly bars use of ITC for payment of penalty and interest. These must be paid in cash from the Electronic Cash Ledger. Ensure your client has sufficient cash balance before the DRC-03 payment.

Key Takeaways

• Section 73 covers non-fraud GST demands only — maximum penalty is 10% of tax, not 100% as under Section 74
• Three payment windows exist: zero penalty at DRC-01A stage, 25% penalty within 30 days of SCN, and adjudication-stage penalty
• DRC-01A is your best opportunity — the GST portal is the only notification channel, so check client dashboards regularly
• File a detailed DRC-06 reply with documentary evidence for each item, and always request a personal hearing
• Interest accrues at 18% or 24% per annum — even a one-month delay adds meaningful liability on large demands
• Penalty and interest must be paid in cash — the Electronic Credit Ledger cannot be used for these dues

How corpus Helps

corpus's compliance dashboard compares GSTR-1 vs GSTR-3B figures and flags GSTR-2B ITC gaps in real time — before the GST department does. When a discrepancy exists, corpus alerts your practice so you can file an amendment proactively, rather than waiting for a Section 73 notice 18 months later. The platform also maintains a demand tracker that logs all DRC-01A and DRC-01 notices received across your client portfolio, auto-calculates interest liability as of today, and generates the DRC-03 payment advice with the exact cash amount required. When a notice does arrive, your response preparation time drops from days to hours.

Received a Section 73 notice? Open corpus, run the client's GSTR reconciliation, and walk into the personal hearing with a complete, documented reply.