Step 1 — Read the SCN line by line and table its constituent allegations

A GST Show Cause Notice may run 4 to 60 pages. The first defence move is mechanical: convert the SCN into a tabulated allegation map. List every distinct allegation, the period it covers, the tax-head (CGST / SGST / IGST), the disputed tax amount, the alleged ground (which sub-clause of which section), and the evidence cited.

This exercise typically reveals two things: (a) aggregation errors where the Department has bundled distinct issues into a lump-sum demand without specifying period-wise figures, and (b) vague grounds where the allegation is descriptive ("ITC wrongly availed") without specific transactional reference. Both are pleadable defects under Section 75(7) (notice must be specific) and natural-justice principles. A reply that quotes the bundled / vague portions back at the Department and demands particulars is a strong opener.

Step 2 — Verify limitation and the framing (Section 73 vs Section 74)

The single most consequential defence is limitation. Compute:

• SCN issuance limitation: Section 73 = 2 years 9 months from the due date of the annual return for the relevant FY; Section 74 = 4 years 6 months.
• Order issuance limitation: Section 73 = 3 years; Section 74 = 5 years.

If the SCN is on the boundary of the Section 73 window and the Department has invoked Section 74 to extend, the framing challenge is your priority defence. Section 74 requires positive evidence of fraud, willful misstatement or suppression of facts. Mere interpretational disputes (HSN classification differences, ITC ambiguities) are not Section 74 territory. Multiple High Courts (Madras, Delhi, Bombay, Karnataka) have set aside Section 74 SCNs where the Department's suppression allegation was essentially an interpretation difference.

If you succeed on framing, the SCN may be entirely time-barred (because the Section 73 window has closed), and the matter ends. If you do not succeed, you have at minimum dropped the penalty exposure from 100% to 10%.

Step 3 — Map every allegation to a primary defence category

Assign each allegation to one of these categories and structure the reply accordingly:

• Procedural defect — bundled allegations, vague grounds, jurisdictional issue, multiple SCN bar under Section 75(2);
• Limitation — SCN time-barred for the period in question;
• No tax due — supply was non-taxable (export, exempt, schedule III), or rate was correctly applied;
• ITC entitlement established — Section 16(2) conditions satisfied, GSTR-2A/2B reconciliation supports the claim, vendor compliance certificate available;
• Classification correct — HSN classification supported by tariff explanatory notes or AAR;
• Valuation correct — Section 15 / Rules 27-35 compliance, related-party arm's length proof;
• Place of supply correct — Section 7-13 IGST Act mapping for the transaction;
• Voluntary payment — partial payment with interest under Section 73(5) / 74(5) attaching no-penalty / 15%-penalty regularisation;
• Settlement / amnesty — applicable scheme covering the period.

Step 4 — Build the evidentiary annexure pack

A GST SCN reply lives or dies on documents. The standard annexure pack:

1. GSTR-1, GSTR-3B, GSTR-9 / 9C for the period;
2. GSTR-2A / 2B reconciliation (CA-certified for ITC matters);
3. Sales register and purchase register (CSV / PDF);
4. Bank statements showing receipt / payment for disputed transactions;
5. Invoices (sales and purchases) for the disputed transactions, with e-invoice / IRN reference where applicable;
6. E-way bills for movement of goods;
7. Contracts / POs / agreements for the underlying supply;
8. Vendor compliance certificates (Form GSTR-9 of vendor showing reciprocal supply);
9. Valuation reports / cost-sheets where pricing is disputed;
10. Earlier correspondence with the Department / audit reports (where the issue was previously examined);
11. Statements recorded under Section 70 (with retraction note where relevant);
12. Statutory returns of group entities (where allegations involve related-party transactions).

Each annexure should carry a sequential index reference and be cross-cited in the reply paragraphs.

Step 5 — Draft the legal grounds tightly

The "Grounds" section of the reply should be paragraph-numbered and frame each defence as a stand-alone legal proposition. Use:

• Plain statutory text (quote sub-section verbatim);
• Authoritative judgments from the Supreme Court, jurisdictional High Court, AAR / AAAR;
• CBIC circulars and clarifications;
• Where contradictory rulings exist across High Courts, lead with the jurisdictional High Court and acknowledge the contrary view to forestall a "missed" argument from the Department.

For ITC disputes, the leading authorities to cite (depending on the issue) include Bharti Airtel, Suncraft Energy (Calcutta HC on Section 16(2)(c) reverse onus), Lalithaa Jewellery, and CBIC Circular 183/15/2022-GST.

Step 6 — Address penalty separately and pre-emptively

Reply paragraphs on penalty are usually short — 4 to 8 lines — but they materially affect the order. Argue:

• For Section 74 framing challenge: No fraud / suppression / willful misstatement; therefore Section 74 penalty (100%) cannot be imposed; at most Section 73 penalty (10% / ₹10,000).
• For Section 73 cases: Where any tax + interest has been voluntarily paid before SCN, Section 73(5) bars penalty entirely; if paid within 30 days of SCN, Section 73(8) bars penalty entirely.
• Mens rea: Even where the framing is conceded, plead bona fide interpretation, absence of mens rea, and reliance on professional advice as mitigating circumstances under Section 75(13).

Step 7 — Personal hearing strategy

The personal hearing is offered under Section 75(4). Two operational decisions:

• Whether to attend in person or via video conferencing — VC is now the default; in-person hearings are reserved for complex matters with voluminous evidence.
• Who attends — typically the authorised representative (counsel + CA) plus the company's tax head. Avoid sending the founder unless specifically asked.

The hearing itself is not a courtroom argument — it is a structured discussion where the proper officer asks specific questions on the reply. The representation should be backed by a hearing brief (1-page summary of defences with annexure references) handed across at the start. Where the officer raises a new point not in the SCN, request 7 days to file a supplementary reply (Section 75(7) read with natural justice).

Step 8 — Watch for personal-hearing reschedule patterns

Departmental hearing schedules are tight (each officer handles 30-50 SCNs). If the Department reschedules the hearing more than once, document each reschedule in writing — it preserves a natural-justice argument later (where the order is rushed without giving you the originally-scheduled hearing).

If you are seeking an adjournment (rare — should be avoided), file a written request 5+ days before the hearing date with reasons. Ad-hoc same-day adjournments often lead to ex-parte orders that take months to reverse.

Step 9 — Cross-tag with other tribunals and proceedings

Where the SCN involves transactions that are also under FEMA / Income Tax / Customs scrutiny, the reply should be coordinated with positions taken before those forums. A conflicting position at one tribunal materially weakens defences at the others. For cross-border services, this typically means coordination of:

• GST place-of-supply position;
• FEMA service-export classification;
• TDS under Section 195 Income Tax Act on outbound payments;
• Transfer pricing position (where parties are related).

For a related deeper analysis, see our FEMA Compliance pillar and GST Litigation pillar.

Step 10 — Read the adjudication order surgically

When the order arrives, do not jump straight to the demand quantum. Read the order in this sequence:

1. The findings paragraph — what specifically did the proper officer accept and reject?
2. Reasons given for rejecting your defences — were they reasoned or perfunctory?
3. Voluntary payments and Section 73(5)/(8) treatment;
4. Penalty determination and the Section 74 framing — preserved or upheld?
5. Interest computation under Section 50;
6. The operative portion (final demand quantum, payment timeline, refund liability if any).

The order will be the foundation of the appellate brief. Identify the 2-4 strongest grounds for appeal early — do not wait for the appeal-filing deadline.

Step 11 — Compute pre-deposit and decide on appeal

The first appeal under Section 107 requires a 10% pre-deposit of the disputed tax (cap ₹25 crore + ₹25 crore CGST/SGST). The economics:

• Time to appellate decision: 6-18 months;
• Locked working capital: 10% of disputed tax;
• Interest accrual on disputed balance: 18% pa (Section 50);
• Professional cost: ₹2-7 lakh for a single-issue appeal at first-appellate stage.

If your strongest defences would prevail in 60%+ of similarly-framed cases at the appellate level, file. If below that, consider voluntary payment with interest to close the matter and avoid further capital lock-up.

Step 12 — Preserve appellate options post-first-appeal

If the first-appellate authority's order is partly or wholly adverse:

• You have 3 months (extendable by 3 months on sufficient cause) to file before GSTAT;
• Pre-deposit at GSTAT = additional 20% (subject to aggregate cap of ₹50 crore CGST + ₹50 crore SGST);
• For pure jurisdictional / constitutional points, parallel writ to the High Court is feasible (subject to the alternative-remedy doctrine).

The reply you filed at the SCN stage now becomes the foundation of the appellate brief. Inconsistent positions across stages destroy credibility — keep the legal theory of the case stable from SCN reply through GSTAT.