GST on Exports & SEZ — Zero-Rated Supply Guide

This distinction is CRUCIAL for exporters — getting it wrong costs lakhs in blocked credits: ZERO-RATED SUPPLY (Section 16 IGST Act): Definition: A supply on which GST rate is 0% BUT full ITC is allowed; Who qualifies: (a) Export of goods or services, (b) Supply to SEZ unit/developer; Key benefit: You can CLAIM REFUND of all input tax credits used in making that supply; There is NO break in the ITC chain — credits flow fully. EXEMPT SUPPLY (Section 11 CGST Act): Definition: A supply on which NO GST is charged AND no ITC can be claimed; Examples: Fresh milk, education, healthcare, unprocessed food grains; Key restriction: Input tax credit on purchases used for exempt supplies must be REVERSED (Rule 42/43). THE CRITICAL DIFFERENCE: | Feature | Zero-Rated | Exempt | |---------|-----------|--------| | GST on output | 0% | 0% | | ITC on inputs | FULL claim + refund | NO claim — must reverse | | Revenue impact | Government refunds taxes | Credits permanently lost | | Working capital | Neutral (refund received) | Cost increase (ITC lost) | PRACTICAL EXAMPLE: Textile exporter buys fabric (5% GST = ₹5 Lakh), dyes/chemicals (18% GST = ₹2 Lakh): If EXPORT (zero-rated): Claims ₹7 Lakh refund → effective cost = nil; If EXEMPT (hypothetically): ₹7 Lakh ITC blocked forever → becomes cost → export becomes uncompetitive; This is why exports are zero-rated NOT exempt — to maintain international competitiveness. WHY THIS MATTERS FOR INDIA: Exports must be GST-free to compete globally (WTO principle); If India charged GST on exports: Indian goods 18% more expensive than competitors; Zero-rating ensures: 'Export the product, not the tax'; India's export competitiveness depends on this mechanism working efficiently; Refund delays = working capital crisis for exporters = India loses export orders. COMMON MISTAKES: ❌ Treating exports as 'exempt' in GSTR-3B → ITC gets reversed automatically; ❌ Not reporting zero-rated supplies in Table 6A of GSTR-1 → refund not processed; ❌ Mixing exempt and zero-rated in same GSTIN → ITC proportional reversal triggered; ✅ Always report exports under 'zero-rated' category, never 'exempt'.

LUT vs IGST payment is the FIRST decision every exporter must make — here's the complete analysis: WHAT IS LUT (Letter of Undertaking): Legal basis: Rule 96A of CGST Rules; Purpose: Allows export WITHOUT paying IGST — a self-declaration that exporter will fulfill export obligation; Validity: One financial year (April to March); Filing: Online on GST portal → Form GST RFD-11; Acceptance: Automatic (unless previously defaulted on export obligation). WHO CAN FILE LUT: ✅ Any registered person making zero-rated supply; ✅ Must NOT have been prosecuted for tax evasion >₹250 Lakh; ✅ Must NOT have been convicted under CGST Act or IGST Act; ❌ If ineligible for LUT → must furnish BOND with bank guarantee. LUT ROUTE — HOW IT WORKS: Step 1: File LUT on GST portal (Form RFD-11) at start of financial year; Step 2: Export goods/services WITHOUT charging IGST (invoice shows 'Supply to SEZ/Export under LUT'); Step 3: Report in GSTR-1 Table 6A (exports without payment); Step 4: ITC accumulates (input taxes paid but no output tax); Step 5: File refund application (RFD-01) for accumulated ITC; Step 6: Provisional refund (90%) within 7 days; Final (10%) after verification. IGST PAYMENT ROUTE — HOW IT WORKS: Step 1: No LUT needed; Step 2: Export goods with IGST on invoice (e.g., ₹10 Lakh goods + ₹1.8 Lakh IGST); Step 3: Report in GSTR-1 Table 6A (exports with payment); Step 4: IGST auto-matched with shipping bill via ICEGATE; Step 5: Refund scroll generated by customs — credited to bank; Timeline: 7-30 days (automated); Step 6: ITC used to pay IGST — net cash impact = timing only. WHICH ROUTE TO CHOOSE: | Factor | LUT Route | IGST Route | |--------|-----------|------------| | Working capital | ₹0 blocked | IGST amount blocked 30-60 days | | Refund speed | 30-60 days (manual) | 7-30 days (automatic) | | Documentation | High (RFD-01, CA cert) | Low (auto via shipping bill) | | Best for | Large exporters, service exporters | Goods exporters, small businesses | | Compliance burden | Medium-High | Low | RECOMMENDATION BY BUSINESS TYPE: (a) IT/Software services exporter (₹5 Cr+): USE LUT — no IGST outflow, accumulate ITC, file quarterly refund; (b) Manufacturer exporter (₹50L-5 Cr): USE IGST — simpler, faster automated refund; (c) Merchant exporter (trading): USE LUT — thin margins, can't afford IGST blocking; (d) Startup/small exporter (<₹50L): USE IGST — avoid refund application complexity; (e) SEZ supplier: USE LUT — SEZ endorsement + refund is standard practice.

Export refund rejections are EXTREMELY common — 30-40% of first-time applications face issues. Here's every reason and fix: CATEGORY 1: GSTR-1 REPORTING ERRORS (40% of rejections): (a) Shipping bill number mismatch: GSTR-1 shows '1234567' but customs shows '001234567' (leading zeros); Fix: Match EXACTLY with customs — include all digits; (b) Port code wrong: Must be 6-digit port code (e.g., INMAA1 for Chennai); Entering 'Chennai' or partial code → rejection; (c) Invoice number mismatch: GST invoice says 'EXP/23-24/001'; Shipping bill says 'EXP-23-24-001' (hyphen vs slash); Fix: Ensure EXACT match — even one character difference blocks auto-processing; (d) FOB value mismatch: GSTR-1 in INR, shipping bill in USD → conversion rate mismatch; Use customs exchange rate (CBIC notified rate), not bank rate; (e) Late reporting: Export invoice not reported in GSTR-1 within due date → table 6A empty. CATEGORY 2: IGST REFUND SPECIFIC (30% of IGST rejections): (a) IGST not paid: Invoice shows IGST but GSTR-3B doesn't include it in tax payment; (b) EGM (Export General Manifest) not filed: Shipping line hasn't filed EGM → customs can't confirm export; Fix: Follow up with shipping agent — EGM must be filed within 7 days of vessel departure; (c) Let Export Order (LEO) not issued: Customs officer hasn't given LEO → shipment status incomplete; (d) Scroll generation failed: SB005 error (IGST mismatch), SB002 (invoice not found in GSTR-1); Fix: File Table 9 amendment in GSTR-1 to correct errors. CATEGORY 3: ITC REFUND SPECIFIC (50% of ITC refund rejections): (a) Wrong formula application: Refund = (Export turnover ÷ Total turnover) × Net ITC; Common mistake: Including EXEMPT turnover in denominator (shouldn't be there post-amendment); (b) Accumulated ITC less than claimed: Declared ₹5 Lakh refund but electronic credit ledger shows ₹4.8 Lakh; Fix: Reconcile ITC ledger before filing — include current month's ITC; (c) Statement 3/3A errors: Outward supply invoices vs inward supply details mismatch; (d) CA certificate issues: Certificate doesn't match audited books; Dates incorrect; CA not mentioning 'not availed drawback on inputs'; (e) BRC/FIRC not received: Foreign remittance not received within 9 months → refund blocked for services; Fix: Follow up with bank for FIRC (Foreign Inward Remittance Certificate). CATEGORY 4: GENERAL ISSUES (All types): (a) GSTIN not active: Registration suspended/cancelled → all refunds blocked; (b) Pending returns: Any GSTR-3B pending → refund application rejected at filing stage; (c) Bank account mismatch: Refund goes to account registered in GST → ensure correct bank details; (d) ARN not generated properly: Application saved but not submitted → deemed not filed. PREVENTION CHECKLIST: ✅ Match shipping bill with GSTR-1 invoice-by-invoice before filing; ✅ Use customs exchange rate for INR conversion (not bank rate); ✅ Ensure EGM filed within 7 days of shipment; ✅ File GSTR-1 before GSTR-3B each month; ✅ Keep ITC ledger reconciled — check electronic credit ledger weekly; ✅ Get CA certificate within 2 days of filing RFD-01; ✅ Maintain BRC/FIRC within 9 months (for services).

SEZ GST compliance is DIFFERENT from regular DTA businesses — here's the complete framework: SEZ UNDER GST — LEGAL FRAMEWORK: Section 16 IGST Act: Supplies TO SEZ = zero-rated; Section 7(5)(b) IGST Act: Supplies BY SEZ to DTA = inter-state supply (IGST applicable); SEZ Act 2005 remains valid — GST provisions supplement, not replace; CGST/SGST exempt within SEZ for authorized operations. HOW SEZ UNIT PROCURES FROM DTA (Domestic): Option 1 — DTA supplier charges IGST: DTA supplier raises invoice with IGST; SEZ unit claims as ITC (or refund if zero-rated output); DTA supplier claims refund of IGST paid (since zero-rated supply to SEZ); Timeline: 30-60 days for DTA supplier's refund. Option 2 — DTA supplier uses LUT (no IGST): DTA supplier files LUT, supplies to SEZ without IGST; SEZ unit receives goods/services tax-free; DTA supplier claims ITC refund (accumulated credits); Endorsement: SEZ unit must endorse invoice confirming receipt. WHICH OPTION IS BETTER: For DTA SUPPLIER: LUT route = no cash outflow (just ITC refund claim); IGST route = pay IGST upfront, wait for refund; Most large suppliers prefer LUT for SEZ supplies. For SEZ UNIT: LUT route = no IGST on invoice (cleaner); IGST route = ITC available in their books (but adds reconciliation). SEZ UNIT's OWN COMPLIANCE: (a) Separate GST registration: SEZ unit has SEPARATE GSTIN (even if same PAN as DTA entity); (b) Returns: Must file GSTR-1, GSTR-3B like any registered person; (c) ITC: Can claim ITC on authorized operations; (d) Output: Exports → zero-rated (no GST); Sales to DTA → IGST at applicable rate; (e) Annual return: GSTR-9 required. SEZ TO DTA (Selling domestically): Treated as IMPORT by DTA buyer — subject to: IGST at applicable rate; No customs duty (unless specified for de-bonding); DTA buyer claims ITC on IGST paid; SEZ unit reports as 'supply to DTA' in returns. COMPLIANCE REQUIREMENTS: | Requirement | DTA Unit | SEZ Unit | |-------------|----------|----------| | GST Registration | Mandatory if >₹20L | Mandatory (no threshold) | | Returns | GSTR-1, 3B, 9 | GSTR-1, 3B, 9 | | E-way bill | Required >₹50K | Required for DTA movement | | E-invoice | If turnover >₹5 Cr | If turnover >₹5 Cr | | LUT filing | If supplying to SEZ | If exporting | | Endorsement | From SEZ for refund | Provide to DTA suppliers | KEY BENEFITS OF SEZ UNDER GST: (1) Zero-rated procurement: No tax cost on inputs for export production; (2) No reversal: Unlike exempt supplies, ITC fully available; (3) Faster refunds: SEZ endorsement expedites DTA supplier refunds; (4) Competitive edge: Tax-free zone maintains India's export pricing advantage; (5) Service SEZs: IT parks, BPO hubs — services exported from SEZ are completely tax-free. COMMON ISSUES: ❌ SEZ unit forgetting to endorse DTA supplier's invoice → supplier's refund rejected; ❌ Incorrect classification: 'Authorized operations' narrowly defined — non-authorized purchases not zero-rated; ❌ DTA sales without IGST: SEZ unit selling to DTA customer without charging IGST = non-compliance; ❌ Mixed-use inputs: Inputs used for both SEZ export AND DTA sales → proportional ITC reversal needed.