ITC on Zero-Rated Supplies: Exports & SEZ Complete Guide

When it comes to GST, one area that confuses taxpayers more than anything else is ITC on exports and SEZ supplies. You supply goods/services outside India → GST says it’s zero-rated. This means two powerful benefits:

1️⃣ You can claim full ITC (even for exempt-related input services)

2️⃣ You can even claim refunds of:

• unutilized ITC (if exporting under LUT)
• IGST paid on exports (if exporting with payment of tax)

This makes zero-rated supplies the most attractive category under GST.

But these benefits come with strict rules under:

• Section 16 of IGST Act
• Rule 89 of CGST Rules
• Rule 96 of CGST Rules
• LUT/ Bond conditions
• SEZ documentation rules

Let’s break everything down in a simple, practical way.

1. What Are Zero-Rated Supplies?

Under Section 16(1) of IGST Act, zero-rated supplies include:

✔ Exports of goods

Sending goods outside India.

✔ Exports of services

Providing services to foreign clients with payment in convertible foreign exchange (or INR permitted by RBI).

✔ Supply to SEZ unit or SEZ developer

But only if the supply is:

• for authorized operations, and
• properly endorsed by the SEZ officer.

Zero-rated ≠ Exempt

Zero-rated is different from exempt supplies.

This is why exporters love being zero-rated.

2. Two Options for Making Zero-Rated Supplies

Taxpayers can choose either:

Option A: Export under LUT (without payment of GST)

• No GST charged
• ITC accumulated becomes refundable
• Refund filed under Rule 89 (FORM RFD-01)

Most exporters prefer this.

Option B: Export with payment of IGST

• Pay IGST on exports
• Claim refund of IGST paid
• Automatically processed under Rule 96

Simple method for those having output tax liability.

3. What Is LUT (Letter of Undertaking)?

LUT allows exporters to export their goods/services without paying IGST.

LUT is filed through:

FORM GST RFD-11

Who cannot file LUT?

A taxpayer who violated GST laws (prosecution > ₹250 lakh). Such persons must export under Bond + Bank Guarantee.

4. ITC Eligibility for Zero-Rated Supplies (Section 16(2))

The best part:

Exporter can claim ITC even if:

• the inward supplies are used for exports, AND
• those supplies are otherwise exempt or restricted

This is an exception to all blocked credit rules.

Example

• Food provided to employees (normally ineligible ITC) →
• If directly used for catering service export → ITC becomes allowed.

5. Important Conditions to Claim ITC for Exports

To claim ITC → the following must be present:

• Tax invoice
• Goods actually exported (shipping bill/Bill of Lading)
• Services supplied to foreign customer
• Consideration received in foreign currency (or permitted INR)
• Filing of GSTR-1 & GSTR-3B
• Matching with ICEGATE data (for goods export refund)

6. ITC Refund Route 1: Export Under LUT (Rule 89)

If you export without paying IGST, then refund is available for:

Refund = Unutilized ITC (accumulated credit)

Formula (Rule 89(4))

Simple Example

• ITC available = ₹5,00,000
• Zero-rated turnover = ₹20,00,000
• Total turnover = ₹40,00,000

Refund = (20,00,000 × 5,00,000) / 40,00,000,

Refund = ₹2,50,000

Documents Required

• Shipping Bill
• Bill of Lading
• FIRC / BRC
• LUT copy
• Export invoices
• GSTR-1
• GSTR-3B
• Purchase register

Refund application is filed using:

FORM RFD-01 (Rule 89)

7. ITC Refund Route 2: Export With Payment of IGST (Rule 96)

This route is simpler.

You export goods → pay IGST → refund is AUTOMATIC.

The process:

• File GSTR-1
• File GSTR-3B
• Shipping bill gets validated with GSTR-1
• ICEGATE releases refund
• Amount is credited directly to bank
• No RFD-01 filing needed

This is why big exporters prefer this option.

8. Rule 96(10) – Restrictions on IGST Refund Route (IMPORTANT)

This is the most misunderstood rule.

You cannot claim IGST refund on exports if:

• You received supplies under EPCG, Advance Authorization, DFIA
• You availed IGST exemption on imports
• You availed certain government benefits under Customs Notification 40/2017, 41/2017

Meaning:

• If you use duty exemption schemes →
• You must export under LUT, not with IGST payment.

9. SEZ Supplies – Special Rules

Supply to SEZ is considered zero-rated.

But ITC is allowed ONLY IF:

• The SEZ officer endorses the invoice
• The supply is strictly for "authorized operations"
• Payment is received from SEZ unit

The supplier can:

Option A

Supply without IGST → claim ITC refund (Rule 89)

Option B

Supply with IGST → claim IGST refund (Rule 96)

Common Confusion

“SEZ is in India. How is it zero-rated?”

Because the SEZ Act treats SEZ as a foreign territory for tax purposes.

10. ITC Restrictions Do NOT Apply to Zero-Rated Supplies

Blocked credit under Section 17(5) does not apply if goods/services are directly used for export.

Examples:

• Construction services for export-oriented production → ITC allowed
• Food for employees on export project → ITC allowed
• Capital goods exclusively used for exports → ITC allowed

This is why many exporters avoid domestic supply altogether.

11. Common Mistakes Made by Exporters

• Not filing LUT every financial year
• Claiming refund on ineligible ITC (blocked credit)
• Filing refund without matching ICEGATE data
• SEZ invoice endorsement missing
• Using IGST refund route despite restrictions under Rule 96(10)
• Wrong turnover figures in refund formula

These mistakes cause refund rejection or delay.

12. Practical Examples

Example 1 – Export Under LUT Refund

• ITC = ₹8 lakh
• Zero-rated turnover = ₹40 lakh
• Total turnover = ₹1 crore

Refund = (40 lakh × 8 lakh) / 1 crore

Refund = ₹3,20,000

Example 2 – Export With IGST Payment

• Goods exported with IGST ₹3 lakh
• Refund automatically credited by ICEGATE in 10–15 days.

Example 3 – Supply to SEZ With IGST Payment

• Goods supplied to SEZ unit
• IGST charged = ₹1 lakh
• Refund claimed under Rule 96.

Example 4 – Rule 96(10) Violation

• An exporter uses Advance Authorization scheme.
• He exports with IGST payment → Refund is blocked.
• Solution → Export under LUT + claim ITC refund.

13. Refund Filing Steps (Under Rule 89)

• Prepare refund computation
• Verify 2A/2B ITC matching
• Reconcile export turnover
• Prepare documents
• File RFD-01
• Respond to PFMS/bank queries
• Refund credited to bank

14. Documents Required for Zero-Rated Refunds

• Shipping bill
• EGM (Export General Manifest)
• FIRC/BRC
• Invoice
• LUT
• GSTR-1, GSTR-3B
• Purchase register
• Statement 3 / Statement 4 depending on refund type
• CA certificate for high-value refund

15. Final Summary

Zero-rated supplies are one of the best categories under GST because exporters get:

• Full ITC
• Refund of unutilized ITC
• Refund of IGST paid
• Freedom from blocked credit rules
• Supportive government schemes

But the rules are technical, especially:

• Rule 89 refund formula
• Rule 96(10) restrictions
• SEZ endorsement
• IGST vs LUT choice

If you handle these carefully, ITC and refund become smooth.

Also Read: ITC in Special Cases Under GST: Complete Section 18 Guide