GST for Special Economic Zones is one of the most technically complex areas of indirect tax in India. The concepts are simple - supplies to SEZ are zero-rated, supplies from SEZ to DTA are imports - but the return filing, refund claims, invoicing, and documentation requirements are anything but simple.
This blog translates every technical SEZ GST requirement into plain language. We cover: what each party (SEZ unit, DTA supplier, SEZ developer) must file, how to report in GSTR-1 and GSTR-3B, how the refund process works, and the common compliance pitfalls that cost businesses real money.
What Is an SEZ Under GST?
A Special Economic Zone is a geographically designated area within India that is treated as foreign territory for GST purposes. This means: supplies into the SEZ = exports (zero-rated). Supplies out of the SEZ to DTA = imports (IGST + customs duties). Intra-SEZ supplies (one SEZ unit to another) = zero-rated.
SEZ entities include: SEZ units (businesses operating within the SEZ) and SEZ developers (entities that develop the SEZ infrastructure). Both enjoy the same GST treatment.
Under Section 7(5)(b) of the IGST Act, any supply to or by an SEZ unit/developer is deemed an inter-state supply. Under Section 16 of the IGST Act, these supplies are zero-rated. This is the foundation of all SEZ GST compliance. Businesses using GST return filing services (know more) get SEZ-specific return management.
Key Terms You Should Know
Zero-Rated Supply (Section 16 IGST Act): A supply on which the tax rate is 0%. The supplier can claim refund of ITC (if under LUT) or refund of IGST paid. Not the same as exempt supply - exempt supplies do not allow ITC claim; zero-rated supplies do.
LUT - Letter of Undertaking (Form RFD-11): Filed annually on the GST portal. Allows the DTA supplier to supply to SEZ without paying IGST. In exchange, the supplier undertakes to pay the IGST if the conditions of zero-rating are not met.
Bond: Alternative to LUT. A bank guarantee-backed undertaking. Used when the supplier does not meet the conditions for LUT (e.g., has been prosecuted for tax evasion). Most suppliers use LUT, not bond.
DTA - Domestic Tariff Area: All areas of India outside the SEZ. Normal GST rules apply in DTA.
Authorised Operations: Activities approved by the SEZ Development Commissioner for the SEZ unit. Zero-rated treatment applies only for supplies used in authorised operations. Supplies for non-authorised activities are not zero-rated.
Bill of Export: For goods supplied to SEZ, a bill of export must be filed (similar to exports) as the supply is treated as an export. Required for claiming refund.
Endorsement by SEZ Officer: The SEZ specified officer must endorse the invoice/bill of export confirming the goods/services were received in the SEZ for authorised operations. Without this endorsement, the refund claim is rejected.
RFD-01: The GST refund application form. Used for claiming refund of ITC (under LUT) or refund of IGST paid on SEZ supplies.
GSTR-1 Table 6B: The specific table in GSTR-1 where DTA suppliers report supplies to SEZ units/developers.
Who Files What: The Three Parties in SEZ GST
| Party | What They File | Key Reporting | Refund Claim |
|---|---|---|---|
| DTA Supplier (supplying TO SEZ) | GSTR-1 + GSTR-3B (monthly/quarterly). LUT (Form RFD-11, annual). | GSTR-1 Table 6B: SEZ supplies with/without payment of tax. GSTR-3B Table 3.1(b): zero-rated supply. | RFD-01: refund of ITC (under LUT) or refund of IGST paid. |
| SEZ Unit/Developer (receiving supplies) | GSTR-1 + GSTR-3B. Separate GSTIN from DTA. | Report inward supplies from DTA as zero-rated. Report outward supplies to DTA as inter-state (IGST). Report exports as zero-rated. | Claim ITC on inputs. Claim refund of accumulated ITC for zero-rated outward supplies (exports from SEZ). |
| SEZ Unit (supplying TO DTA) | GSTR-1 + GSTR-3B. Bill of entry by DTA recipient. | SEZ treats this as export (zero-rated). DTA recipient treats as import: pays IGST + customs duty. | SEZ unit does not pay GST on DTA supply. DTA recipient pays IGST (can claim ITC if registered). |
This three-party structure is the source of most confusion. The DTA supplier, the SEZ unit, and the DTA recipient (for SEZ-to-DTA supplies) each have different GST return obligations. For GST registration (know more) including separate SEZ registration, we handle the complete process.
The Legal Framework: Sections That Govern SEZ GST
| Section / Rule | What It Does | Impact on Returns |
|---|---|---|
| Section 7(5)(b) IGST Act | Deems any supply to or by SEZ unit/developer as inter-state supply. | IGST applies (not CGST+SGST). Report as inter-state in returns. |
| Section 16 IGST Act | Zero-rates supplies to SEZ for authorised operations and exports from India. | Zero tax rate on invoice. Claim ITC refund or IGST refund. |
| Section 25 CGST Act | Requires separate registration for DTA and SEZ operations in the same state. | Separate GSTR-1/3B for each GSTIN. No cross-utilisation of ITC between DTA and SEZ. |
| Rule 89 CGST Rules (Refund) | Governs the refund procedure: RFD-01 application, supporting documents, processing timeline. | Refund claim linked to returns filed. Must be filed within 2 years of relevant date. |
| Notification 48/2017 (LUT) | Prescribes conditions for filing LUT instead of bond for zero-rated supplies. | LUT filed annually (RFD-11). Without LUT, must pay IGST and claim refund. |
| Rule 46 CGST Rules (Invoice) | Prescribes invoice format for SEZ supplies: must mention ‘Supply meant for SEZ unit/developer under LUT/Bond without payment of tax.’ | Invoice endorsement by SEZ officer required for refund. Incorrect invoice = refund rejection. |
How to Report SEZ Supplies in GSTR-1
For DTA suppliers making zero-rated supplies to SEZ:
Table 6A: Exports. Used for supplies shipped outside India. NOT for SEZ supplies (SEZ is within India, treated as foreign territory but physically within India).
Table 6B: Supplies to SEZ unit or SEZ developer. This is the correct table for SEZ supplies. Two sub-categories: (a) With payment of IGST: Supplier charged IGST on the invoice. Will claim IGST refund. (b) Without payment of IGST (under LUT/Bond): Supplier did not charge IGST. Will claim ITC refund.
For each entry in Table 6B, provide: SEZ unit/developer GSTIN, invoice number, invoice date, taxable value, IGST amount (if with payment), and shipping bill/bill of export number.
For the SEZ unit receiving the supply: report in GSTR-3B under Table 3.1 as inward supply eligible for ITC.
For our complete filing methodology, see the GST returns e-filing guide (know more).
How to Report SEZ Supplies in GSTR-3B
For DTA suppliers:
Table 3.1(b): Report the total value of zero-rated supplies to SEZ. If under LUT: taxable value only (no IGST). If with IGST payment: taxable value + IGST.
Table 4: If claiming ITC: report eligible ITC from inputs used for SEZ supplies. For 5% GST restaurants supplying to SEZ (rare): no ITC. For regular suppliers: full ITC claim.
For SEZ units:
Table 3.1: Report outward supplies (to DTA: inter-state with IGST; to exports: zero-rated). Table 4: Claim ITC on inward supplies from DTA (the zero-rated supplies received).
The Two Paths for SEZ Supplies: LUT vs Pay IGST
| Parameter | Path 1: Supply Under LUT (No IGST) | Path 2: Pay IGST + Claim Refund |
|---|---|---|
| Invoice treatment | Invoice shows taxable value with 0% IGST. Mentions ‘Supply under LUT without payment of tax.’ | Invoice shows taxable value + 18% IGST (or applicable rate). Normal tax invoice format. |
| Cash flow impact | No GST paid upfront. Supplier’s working capital is protected. ITC accumulates and is refunded. | IGST paid upfront. Blocks working capital until refund is processed (typically 30-60 days). |
| Refund type | Refund of accumulated ITC (Rule 89(4)). Formula-based calculation: (turnover of zero-rated supply / adjusted total turnover) × net ITC. | Refund of IGST paid on zero-rated supply (Rule 89(4A)). Simpler: refund = IGST amount paid on the invoice. |
| Refund application | Form RFD-01 filed on GST portal. Supporting documents: statement of invoices, SEZ endorsement, LUT copy. | RFD-01 with IGST details. Supporting: invoice copies, IGST payment proof, SEZ endorsement. |
| Recommended for | Suppliers with regular/large volumes of SEZ supplies. Preserves cash flow. Most commonly used. | Suppliers with occasional SEZ supplies. Simpler documentation. IGST refund is faster to process. |
Our recommendation: Use LUT for regular SEZ suppliers. The ITC refund route preserves working capital. Use IGST payment route for one-off or infrequent SEZ supplies where the IGST amount is manageable. For GST refund services (know more) including SEZ-specific refund management, we handle the complete cycle.
Step-by-Step: The Refund Process for SEZ Supplies
Step 1: File LUT (Form RFD-11) annually. On the GST portal: Services > User Services > Furnish LUT. Valid for one financial year. File before the first zero-rated supply of the year.
Step 2: Issue compliant invoice. Mention: ‘Supply meant for SEZ unit/developer under LUT/Bond without payment of tax’ (if under LUT). Include SEZ unit/developer GSTIN. Include Bill of Export details (for goods).
Step 3: Obtain SEZ officer endorsement. The SEZ specified officer endorses the invoice confirming the goods/services were received for authorised operations. This endorsement is MANDATORY for refund. Without it: refund is rejected.
Step 4: File GSTR-1 with SEZ supplies in Table 6B. Report invoice-wise details. Separate: with payment (IGST) and without payment (LUT).
Step 5: File GSTR-3B reporting zero-rated supplies. Table 3.1(b). Ensure GSTR-1 and GSTR-3B figures match.
Step 6: File refund application (RFD-01). On the GST portal: Services > Refunds > Application for Refund. Select: ‘Refund of ITC on export of goods/services without payment of tax’ (under LUT) or ‘Refund of IGST paid on export of goods/services’ (if IGST paid). Attach: statement of invoices, SEZ endorsement, shipping bill/bill of export, and bank realisation certificate (for goods exports). For refund claim details, see our GST refund guide (know more).
Step 7: Refund processing. The GST officer processes the refund within 60 days (statutory timeline). Provisional refund of 90% may be issued within 7 days for eligible claims. Final refund after verification of supporting documents.
Documents Required for SEZ GST Compliance
- LUT (Form RFD-11) - filed annually on the GST portal
- Tax invoices with SEZ-specific endorsements
- Bill of Export / Shipping Bill (for goods supplied to SEZ)
- SEZ specified officer endorsement on each invoice/bill
- GSTR-1 filed with Table 6B data
- GSTR-3B filed with Table 3.1(b) zero-rated supplies
- RFD-01 refund application with statement of invoices
- Bank realisation certificate (for goods exports from SEZ)
- E-way bills for goods movement to/from SEZ (if value > Rs 50,000)
- SEZ unit/developer registration certificate
- Separate GSTIN registration certificate for SEZ operations
- Annual Performance Report (Form I) - SEZ Act compliance (not GST, but connects to the overall SEZ compliance)
Common Compliance Pitfalls in SEZ GST
Pitfall 1: Not filing LUT before the first supply. Without a valid LUT, the supply must be made with IGST payment. If you supply under LUT without actually filing it: the supply is not zero-rated, and IGST is payable with interest.
Pitfall 2: Missing SEZ officer endorsement. The endorsement is mandatory for refund. Many suppliers file RFD-01 without the endorsement and face rejection. Obtain the endorsement within 45 days of supply.
Pitfall 3: Reporting SEZ supplies in Table 6A (Exports) instead of Table 6B. Table 6A is for exports outside India. Table 6B is for SEZ supplies within India. Wrong table = mismatch in GSTR-1 validation = refund processing delays.
Pitfall 4: Not maintaining separate GSTIN for DTA and SEZ. If the same entity operates in both DTA and SEZ in the same state, two separate GSTINs are mandatory. Cross-reporting between the two is a compliance violation.
Pitfall 5: Refund claim filed after the 2-year time limit. Refund under Rule 89 must be filed within 2 years of the relevant date (date of receipt of supply, date of export, etc.). Missed deadline = forfeited refund. For integrated tax planning services (know more) that prevent SEZ compliance gaps, we handle the complete lifecycle.
E-Way Bill Requirements for SEZ
E-way bills are required for movement of goods to/from SEZ when the value exceeds Rs 50,000. Key rules:
- DTA to SEZ: e-way bill required (inter-state supply). Generated by the supplier or transporter.
- SEZ to DTA: e-way bill required. Generated by the registered person facilitating the movement.
- SEZ to SEZ (different SEZs): e-way bill required if goods physically move between different SEZ locations.
- Intra-SEZ (within the same SEZ): e-way bill may be exempt (depends on state-specific rules and distance). Check the SEZ Development Commissioner’s notifications.
- SEZ to export (outside India): e-way bill required up to the port/airport of export.
SEZ Transaction Types: The Complete Matrix
| From | To | GST Treatment | Tax Applicable | Return Reporting | Refund? |
|---|---|---|---|---|---|
| DTA supplier | SEZ unit | Zero-rated (Section 16) | 0% under LUT; or IGST if paying | GSTR-1 Table 6B | Yes - ITC refund or IGST refund |
| SEZ unit | DTA recipient | Import into DTA | IGST + customs duty by DTA recipient | SEZ: zero-rated outward. DTA: import. | DTA claims ITC on IGST paid |
| SEZ unit | Another SEZ unit (same/different) | Zero-rated | 0% | Both: GSTR-1 inter-unit | Yes - ITC refund |
| SEZ unit | Outside India (export) | Zero-rated (export) | 0% | GSTR-1 Table 6A | Yes - ITC refund |
| Outside India | SEZ unit (import) | Import into SEZ - exempt for authorised ops | Exempt from IGST + customs (Notification 18/2017) | SEZ unit: no GST liability | No refund needed (exempt) |
2026 Context: What’s New for SEZ GST
| 2026 Change | Impact on SEZ GST | What to Do |
|---|---|---|
| 3-year filing restriction (July 2025) | GSTR returns older than 3 years cannot be filed. Old unfiled returns relating to SEZ supplies = permanent loss of refund claim. | File all pending returns immediately. Refund claims linked to unfiled returns cannot be processed. |
| E-invoicing threshold Rs 5 crore (2026) | DTA suppliers above Rs 5 crore must generate e-invoices for SEZ supplies. E-invoice auto-populates GSTR-1 Table 6B. | Implement e-invoicing if applicable. Ensure SEZ-specific invoice annotations are included in e-invoice format. |
| SEZ Sunset Clause (IT Act) | Income tax benefits for new SEZ units under Section 10AA are sunsetting for units commencing after March 2020. GST zero-rating continues unchanged. | GST treatment not affected. IT benefits: consult CA for transition planning. |
| De-notification of SEZs (SEZ Amendment Act 2023) | Some SEZs are being de-notified or converted to industrial parks. De-notified SEZ units lose zero-rated GST treatment. | Verify your SEZ’s notification status. If de-notified: transition to DTA GST compliance. |
| Refund processing improvements | GSTN has improved refund processing times. Provisional refund (90%) within 7 days for eligible claims becoming more consistent. | File RFD-01 with complete documentation for fastest processing. Incomplete applications face delays. |
Penalties for SEZ GST Non-Compliance
| Non-Compliance | Penalty / Consequence | Legal Provision |
|---|---|---|
| Late filing of GSTR-1/3B | Rs 50-200/day late fee + 18% interest on unpaid tax | Section 47 CGST Act |
| Supply without valid LUT/Bond | Supply treated as taxable (not zero-rated). IGST payable with interest from date of supply. | Notification 48/2017 + Section 16 IGST Act |
| Refund claim without SEZ endorsement | Refund rejected. Must obtain endorsement and re-file. | Rule 89 CGST Rules |
| Incorrect Table reporting (6A vs 6B) | Mismatch in validation. Refund processing delayed. May require GSTR-1 amendment. | GSTR-1 filing instructions |
| No separate GSTIN for SEZ operations | Violation of Section 25. All supplies treated as DTA (non-zero-rated). IGST liability + interest + penalty. | Section 25 CGST Act + Section 122 |
| Refund filed after 2-year time limit | Refund forfeited. No extension available. | Section 54 CGST Act |
Our Methodology for SEZ GST Compliance
From our experience with SEZ units and DTA suppliers across 25,000+ clients:
(1) SEZ classification review: Verify the entity’s SEZ registration, authorised operations, and GST registration status. Ensure separate GSTIN for SEZ.
(2) LUT filing: File Form RFD-11 before the first zero-rated supply of each FY. Track expiry and renewal.
(3) Invoice compliance: Every SEZ invoice includes the required endorsement annotation. SEZ officer endorsement tracked and obtained within 45 days.
(4) GSTR-1 Table 6B reporting: Invoice-wise SEZ supply data entered in the correct table. Cross-validated with GSTR-3B Table 3.1(b).
(5) Refund management: RFD-01 filed monthly/quarterly with complete documentation. Provisional refund tracked. Final refund reconciled with books.
(6) E-way bill compliance: All SEZ goods movements above Rs 50,000 have valid e-way bills. Exemptions verified for intra-SEZ movements. For our comprehensive tax planning framework (know more), SEZ GST compliance is integrated with the overall indirect tax strategy.
Key Takeaways
SEZ supplies are zero-rated under Section 16 IGST Act. DTA suppliers report in GSTR-1 Table 6B (not Table 6A). Two paths: supply under LUT (no IGST, ITC refund) or pay IGST (claim IGST refund). SEZ officer endorsement is mandatory for refund.
SEZ units must have separate GST registration from DTA operations (even if same entity, same state). Separate GSTR-1/3B for each GSTIN. No cross-utilisation of ITC.
Refund via RFD-01 must be filed within 2 years of relevant date. 3-year filing restriction (July 2025) means unfiled returns = lost refund claims. File all pending returns immediately.
LUT is the preferred route for regular SEZ suppliers (preserves cash flow). IGST payment route for occasional/one-off supplies. LUT must be renewed annually (Form RFD-11).
Common pitfalls: missing SEZ endorsement, wrong GSTR-1 table, no separate GSTIN, expired LUT, and refund filed after 2-year deadline. All preventable with proper compliance calendar management.
Need Help With SEZ GST Compliance?
Whether you are a DTA supplier needing LUT filing and refund management, or an SEZ unit needing separate registration and return filing - our team handles the complete SEZ GST compliance lifecycle.
Explore our GST return filing services (know more) and GST refund services (know more) for SEZ compliance across Pune, Mumbai, Delhi, and all-India.
For queries, reach out at +91 945 945 6700 or WhatsApp us directly.
