SEZ Units and Developers explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
An SEZ unit and a domestic unit in the same State cannot share a GSTIN. The reason is not administrative convenience — it is that the two attract opposite tax treatments on the same transaction.
A supply to an SEZ unit or developer for authorised operations is a zero-rated supply under s.16(1)(b) of the IGST Act. A supply from an SEZ into the Domestic Tariff Area is treated as an import and bears customs duties and IGST at clearance. A single registration covering both would have to be simultaneously a zero-rated recipient and an import origin — so a separate registration for the SEZ unit or developer is required.
The two directions
Into the SEZ. Section 16(1)(b) of the IGST Act: supply of goods or services or both for authorised operations to a Special Economic Zone developer or a Special Economic Zone unit is a zero-rated supply.
The supplier may either supply under a LUT without payment of tax and claim refund of unutilised credit under Rule 89(4), or supply with payment of IGST and claim refund of the tax under Rule 89. The words "for authorised operations" were inserted by the Finance Act, 2021 and are a condition, not a description — a supply to an SEZ unit that is not for its authorised operations is an ordinary taxable supply. Zero-rated supply: exports and SEZ →
Out of the SEZ into the DTA. Under s.30 of the SEZ Act, 2005, goods removed from an SEZ to the DTA are chargeable to duties of customs, including IGST under s.3(7) of the Customs Tariff Act, as leviable on such goods when imported. The DTA buyer files a bill of entry and pays at clearance.
Why one GSTIN cannot do both
Consider a company with a domestic factory and an SEZ unit in the same State, sharing one registration.
- A vendor supplying the domestic factory charges CGST plus SGST.
- The same vendor supplying the SEZ unit makes a zero-rated supply and claims a refund.
Both invoices carry the same GSTIN. Nothing on the face of the registration distinguishes the destination, and the vendor's zero-rating claim has no verifiable basis.
Conversely, when the SEZ unit clears goods into the company's own domestic operations, a supply is made from an SEZ into the DTA — but with one GSTIN there is no supplier and no recipient, because a person cannot supply to himself.
The separate registration solves both. It makes the SEZ unit a distinct person under s.25(4), so:
- vendors' supplies to it are identifiably zero-rated against a specific GSTIN;
- clearances from it into the DTA are supplies between distinct persons, documented and taxed accordingly.
The registration mechanics
Rule 8(1) historically carried a proviso requiring a person having a unit in an SEZ, or being an SEZ developer, to make a separate application for registration as a business vertical distinct from units outside the SEZ. That proviso was omitted by Notification No. 03/2019-CT dated 29.01.2019, when the business vertical concept was removed generally.
The substantive requirement continues through s.25(2) read with Rule 11, which permits separate registration for each place of business in a State — and through the practical necessity described above. Rule 11: separate registration →
Additional documents. The registration application for an SEZ unit or developer requires, besides the ordinary address proof, the letter of approval issued by the Development Commissioner or the relevant authority, and the documents or certificates issued by the Government of India establishing SEZ status.
The compliance consequences
Every internal movement is a supply. Goods moving between the SEZ unit and the domestic unit are supplies between distinct persons — one direction zero-rated, the other an import into the DTA.
Refund cycles differ. The SEZ unit's inbound supplies are zero-rated, so it accumulates little credit. Its suppliers claim the refunds.
The recipient's endorsement. Refund on a supply to an SEZ requires evidence that the goods or services were received by the SEZ unit for authorised operations — in practice, an endorsement by the specified officer of the zone. Rule 89(2) lists the evidence required with a refund application for SEZ supplies.
Separate books and returns. Two GSTINs mean two sets of returns, two reconciliations and two audit trails.
Key takeaways
- Supplies to an SEZ unit or developer for authorised operations are zero-rated under s.16(1)(b) IGST.
- Supplies from an SEZ into the DTA are treated as imports, cleared on a bill of entry.
- One GSTIN cannot carry both treatments, so a separate registration is required.
- The Rule 8(1) proviso was omitted in 2019; the requirement now runs through s.25(2) and Rule 11.
- The letter of approval and SEZ status documents are needed with the application.
- "For authorised operations" is a condition of zero-rating, not a description.
Read next
- Zero-Rated Supply: Exports and SEZ Under IGST
- Rule 11: Separate Registration for Multiple Places
- GST Refund for SEZ Units and Developers
- Deemed Exports vs Physical Exports vs SEZ Supplies
Disclaimer: Positions stated as on 5 September 2026, based on the CGST and IGST Acts and Rules as amended to 31 March 2026 (ICAI Bare Law, 12th edition) and the ICAI Handbook on Registration under GST (November 2025).