GST on Exports from India: 2026 Rates, LUT & Refunds

Under the Indian Goods and Services Tax (GST) framework, export of goods and services is classified as a zero-rated supply under Section 16 of the Integrated Goods and Services Tax (IGST) Act, 2017. This structure ensures that Indian products and cross-border services remain globally competitive by completely removing domestic indirect taxes from the export value chain.

Exporters can execute transactions through two primary mechanisms: exporting under a Letter of Undertaking (LUT) without paying IGST while claiming refunds on unutilized Input Tax Credit (ITC), or exporting on payment of IGST and claiming a direct refund of the tax paid. Selecting the right mechanism directly influences working capital velocity, customs clearance timelines, and regulatory audit exposure.

This guide provides a comprehensive operational blueprint for Indian manufacturers, merchant exporters, service providers, and overseas B2B buyers sourcing from India, covering legal definitions, documentation workflows, refund mechanics, and common compliance pitfalls.

1. Understanding Zero-Rated Supplies under GST

The fundamental philosophy governing international trade taxation is the destination principle: goods and services must be taxed in the jurisdiction where they are consumed, not where they originate. To implement this principle, Indian tax law classifies exports as zero-rated supplies rather than exempt supplies.

Zero-Rated Supply (Section 16, IGST Act)
 ├── Output Tax Rate: 0%
 └── Input Tax Credit (ITC): 100% Refundable / Usable

Exempt Supply (Section 11, CGST Act)
 ├── Output Tax Rate: 0%
 └── Input Tax Credit (ITC): Blocked / Non-Refundable (Lapsed)

The Legal Definition of Zero-Rated Supply

According to Section 16(1) of the IGST Act, "zero-rated supply" means any of the following supplies of goods or services or both:

Export of goods or services or both.
Supply of goods or services or both to a Special Economic Zone (SEZ) developer or an SEZ unit.

Because these supplies are zero-rated, the entire supply chain is relieved of indirect tax burdens. Exporters do not pay output tax on the final shipment, and they retain the statutory right to claim a refund of all taxes paid on input goods, capital equipment, and input services used in the process.

2. Export of Goods vs. Export of Services: Legal Criteria

The compliance and procedural requirements differ significantly depending on whether physical goods or intangible services are being exported from India.

Legal Criteria for Export of Goods

Under Section 2(5) of the IGST Act, "export of goods" is defined simply as taking goods out of India to a place outside India. The essential triggers are:

Physical movement of cargo across the territorial customs boundaries of India.
Generation of a valid Shipping Bill or Bill of Export passed through Indian Customs (ICEGATE).
Clear evidence of cargo departure through an Export General Manifest (EGM) filed by the carrier.

Legal Criteria for Export of Services

Unlike goods, service exports require the fulfillment of five concurrent conditions under Section 2(6) of the IGST Act. If even one condition fails, the transaction is treated as an ordinary domestic supply subject to full GST:

Supplier Location: The supplier of the service must be located in India.
Recipient Location: The recipient of the service must be located outside India.
Place of Supply: The place of supply of the service (determined under Section 13 of the IGST Act) must be outside India.
Payment Realization: Payment for the service must be received by the supplier in convertible foreign exchange (or in Indian Rupees wherever permitted by the Reserve Bank of India, such as trade settled via Special Rupee Vostro Accounts).
Distinct Entities: The supplier and recipient must not merely be establishments of the same distinct person (e.g., a branch office billing its own head office without true contractual independence).

   [Supplier in India] ─────── Service Delivery ───────> [Recipient Outside India]
           │                                                        │
           └── Payment in Convertible Foreign Forex / Approved INR ──┘
                        (Place of Supply must be OUTSIDE India)

3. The Two Export Routes: LUT vs. Payment of IGST

Indian exporters must choose between two distinct operational routes under Section 16(3) of the IGST Act. Each route carries distinct implications for working capital, documentation, and operational overhead.

                              EXPORT ROUTE SELECTION
                                        │
          ┌─────────────────────────────┴─────────────────────────────┐
          ▼                                                           ▼
   [ ROUTE 1: Under LUT ]                                  [ ROUTE 2: With IGST ]
   • No output tax paid upfront                           • Output IGST paid at export
   • Zero working capital blocked                         • Working capital temporarily tied up
   • File RFD-01 to recover input ITC                     • Automated refund via ICEGATE
   • Ideal for high-ITC & thin-margin models               • Ideal for simple single-product trades

Route 1: Export under Letter of Undertaking (LUT) / Bond

Under this route, the exporter ships goods or delivers services without paying output IGST at the time of export. The exporter then files a refund claim for the accumulated, unutilized Input Tax Credit (ITC) incurred on inputs and input services.

Eligibility for LUT: Available to all registered taxpayers, provided they have not been prosecuted for tax evasion exceeding INR 2.5 Crores under the CGST/IGST Act.
Export Bond Requirement: If a taxpayer is disqualified from executing an LUT due to criminal tax prosecution, they must execute a physical export bond backed by a bank guarantee covering the estimated tax liability.
Filing Form GST RFD-11: LUTs must be submitted online on the GST portal (Form GST RFD-11) prior to shipping goods or rendering services. The LUT remains valid for one financial year (April 1 to March 31) and must be renewed annually.

Route 2: Export on Payment of Integrated Tax (IGST)

Under this route, the exporter pays the applicable IGST at the time of export using their accumulated electronic credit ledger balance or electronic cash ledger. Once the goods leave India or services are rendered, the exporter claims a refund of the full output IGST amount paid.

Automated Clearance for Goods: For physical goods, no separate refund application (RFD-01) is needed. The Shipping Bill filed with Customs serves as the deemed refund application.
Processing Mechanism: Once the Customs Electronic Data Interchange (EDI) system (ICEGATE) matches the invoice details in Table 6A of GSTR-1 with the shipping bill data, the refund is processed and credited to the exporter’s verified bank account automatically.

Comparison: Export under LUT vs. Export with IGST Payment

Feature / Parameter	Export under Letter of Undertaking (LUT)	Export with Payment of IGST
Upfront Tax Outflow	Zero (no output tax paid)	Full IGST amount paid at export
Working Capital Impact	Minimal; cash remains unblocked	Moderate to high; cash/credit tied up until refund
Refund Mechanism	Manual filing of Form GST RFD-01 via GST Portal	Automatic transmission via ICEGATE (for Goods)
Refund Scope	Refund on unutilized ITC (Inputs + Input Services)	Complete refund of output IGST paid
Ineligible ITC	Capital goods ITC cannot be refunded via RFD-01	Capital goods credit can be utilized to pay IGST, then refunded
Verification Process	Document verification by jurisdictional GST officer	Fully automated electronic data matching by Customs
Turnaround Time	30 to 60 days following RFD-01 filing	15 to 30 days post-EGM and GSTR-1 filing
Best Suited For	High-volume exporters, thin margins, service firms	Capital-intensive exporters with heavy accumulated ITC

4. Export Documentation and GST Invoicing Requirements

Every export transaction requires cross-alignment between commercial, customs, and tax documentation. Discrepancies between the GST portal and ICEGATE are the single largest cause of delayed refunds.

[ GST Tax Invoice ] ──(Must Match)──> [ Shipping Bill / Airway Bill ] ──(Must Match)──> [ GSTR-1 (Table 6A) ]
        │                                        │                                           │
        └────────────────────────────────────────┴───────────────────────────────────────────┘
                                                 │
                                     [ Customs ICEGATE Gateway ]
                                                 │
                                     [ Automated Refund Payout ]

Mandatory Invoicing Fields

An export invoice must contain specific statutory elements mandated by Rule 46 of the CGST Rules, 2017:

Mandatory Declaration Text:
For LUT Exports: "SUPPLY MEANT FOR EXPORT/SUPPLY TO SEZ UNIT OR SEZ DEVELOPER FOR AUTHORISED OPERATIONS UNDER BOND OR LETTER OF UNDERTAKING WITHOUT PAYMENT OF INTEGRATED TAX"
For IGST Paid Exports: "SUPPLY MEANT FOR EXPORT/SUPPLY TO SEZ UNIT OR SEZ DEVELOPER FOR AUTHORISED OPERATIONS ON PAYMENT OF INTEGRATED TAX"
Buyer Details: Name and address of the foreign recipient, delivery address, and destination country.
Customs Reference: Port Code (6-character code) and Shipping Bill / Bill of Export number (if already generated).
Currency & Valuation: Total invoice value expressed in foreign currency alongside converted Indian Rupee values calculated at the official CBIC/RBI exchange rate.
E-Invoicing Requirements: Exporters crossing statutory aggregate turnover thresholds must generate an electronic Invoice Reference Number (IRN) and signed QR code via the national E-Invoicing portal prior to cargo movement.

Critical Compliance Alignment: GSTR-1, GSTR-3B, and Shipping Bills

To ensure automated data reconciliation, the following fields must match across systems without deviation:

Invoice Number & Date: Must be identical in the commercial invoice, GSTR-1 (Table 6A), and Shipping Bill.
Port Code: Must accurately reflect the specific sea port, airport, or Inland Container Depot (ICD) from which cargo departs.
HSN Code: Harmonized System Nomenclature (at least 6 digits for exports) must align across the customs declaration and GST return.
IGST Amount & Taxable Value: The IGST amount reported in GSTR-1 Table 6A must be equal to or less than the IGST liability cleared in Table 3.1(b) of GSTR-3B for the corresponding tax period.

5. End-to-End GST Refund Process

Navigating the GST refund architecture requires understanding the distinct filing paths for LUT-based ITC refunds versus IGST-paid refunds.

                     REFUND PROCESSING PATHWAYS
                                 │
       ┌─────────────────────────┴─────────────────────────┐
       ▼                                                   ▼
[ LUT: Form GST RFD-01 ]                       [ IGST Paid: Rule 96 ]
1. File GSTR-1 (Table 6A)                      1. File GSTR-1 (Table 6A)
2. File GSTR-3B (Pay liabilities)              2. File GSTR-3B (Pay IGST)
3. Submit RFD-01 on GST Portal                 3. Carrier files EGM / Export Departure
4. ARN generated; sent to Tax Officer          4. ICEGATE auto-validates with GSTN
5. RFD-02 (Ack) / RFD-04 (90% Provisional)     5. PFMS processes direct bank credit
6. RFD-06 (Final Sanction Order in 60 Days)    6. Refund received within 15-30 days

Process A: Refund of Unutilized ITC (Export under LUT via Form GST RFD-01)

When exporting under an LUT, the refund amount of unutilized ITC is calculated using the statutory formula under Rule 89(4) of the CGST Rules:

$$\text{Refund Amount} = \frac{\text{Turnover of zero-rated supply of goods and services} \times \text{Net ITC}}{\text{Adjusted Total Turnover}}$$

Where:

Net ITC: Total Input Tax Credit availed on inputs and input services during the relevant tax period (excluding capital goods and credits blocked under Section 17(5)).
Turnover of Zero-Rated Supply of Goods: The lower of the actual export value or 1.5 times the domestic market value of like goods.
Adjusted Total Turnover: Total turnover in the State or Union Territory excluding exempt supplies other than zero-rated supplies.

Step-by-Step Filing Workflow:

Filing Base Returns: Submit monthly/quarterly GSTR-1 (Table 6A) and GSTR-3B returns for the period.
Preparing Statement 3 / 3A: Generate and upload Statement 3 (for goods) or Statement 2 (for services) linking each export invoice to the corresponding shipping bills or FIRC/BRC records.
Submitting RFD-01: Log in to the GST Portal, navigate to Services > Refunds > Application for Refund, select Export of Goods and Services without payment of tax, and submit RFD-01.
ARN Generation: An Application Reference Number (ARN) is instantly generated, and the requested refund amount is automatically debited from the Electronic Credit Ledger.
Officer Review:

Within 15 days, the jurisdictional tax officer must issue an acknowledgment in Form GST RFD-02 or a deficiency memo in Form GST RFD-03.
Under Section 54(6), the officer can issue a provisional refund order (Form GST RFD-04) for 90% of the total claim within 7 days of the acknowledgment.
The final refund sanction order (Form GST RFD-06) must be issued within 60 days of the ARN generation date.

Process B: Refund of IGST Paid on Export of Goods (Automated via Rule 96)

For goods exported with payment of IGST, the process requires no separate manual filing:

Shipping Bill Transmission: The Shipping Bill filed by the exporter is treated as the official refund application under Rule 96.
Export Confirmation: The international carrier files the Export General Manifest (EGM) or Departure Manifest confirming the goods have left India.
Data Transmission to ICEGATE: The GSTN portal transmits the invoice details declared in Table 6A of GSTR-1 to the Customs ICEGATE system.
Automated Validation: The Customs EDI system runs automatic algorithmic validation matching the invoice number, port code, container details, and IGST values.
Scroll Generation & Disbursal: Upon successful matching, ICEGATE generates an automated refund scroll, and the amount is credited directly to the exporter's validated bank account through the Public Financial Management System (PFMS).

6. Comprehensive Documentation Checklist

To ensure fast processing and prevent audit queries, assemble and maintain the following documentation for every export consignment:

                           EXPORT AUDIT FOLDER
 ┌──────────────────────────────────┬──────────────────────────────────┐
 │     Physical Goods Checklist     │     Export Services Checklist    │
 ├──────────────────────────────────┼──────────────────────────────────┤
 │ [ ] GST Export Invoice (Rule 46) │ [ ] GST Service Invoice (Foreign)│
 │ [ ] Valid LUT (Form RFD-11)      │ [ ] Valid LUT (Form RFD-11)      │
 │ [ ] Shipping Bill / Bill of Exp. │ [ ] Master Service Agreement/SOW │
 │ [ ] Bill of Lading (BL) / AWB    │ [ ] FIRC / e-BRC Certificates    │
 │ [ ] Export Packing List          │ [ ] Statement 2 Reconciliation   │
 │ [ ] EGM Departure Confirmation   │ [ ] Bank Statement Proof         │
 │ [ ] e-BRC / Payment Realization  │ [ ] Value Valuation Evidence     │
 └──────────────────────────────────┴──────────────────────────────────┘

Detailed Document Descriptions

Export GST Invoice: Prepared in compliance with Rule 46 containing the export declaration text, foreign currency values, and destination port data.
Letter of Undertaking (RFD-11 ARN): The electronic acknowledgment confirming a valid active LUT for the current fiscal year.
Customs Shipping Bill / Bill of Export: Legally stamped and validated document containing the exact Let Export Order (LEO) date.
Bill of Lading (B/L) or Airway Bill (AWB): Proof of commercial carriage indicating movement to an overseas destination.
Electronic Bank Realization Certificate (e-BRC) / FIRC: Proof from the authorized dealer bank confirming inward remittance of export proceeds within RBI-mandated timelines.
Statement 3 (for Goods) or Statement 2 (for Services): Standardized CSV/Excel templates required for uploading invoice-level mapping into Form GST RFD-01.

7. Practical Working Examples for Exporters

Example 1: Physical Goods Exporter (LUT vs. IGST Route Comparison)

Apex Engineering Ltd., an industrial valves manufacturer in Pune, exports a shipment of valves valued at INR 10,000,000 (USD ~120,000). The domestic procurement of raw steel, forging parts, and logistics generated INR 1,200,000 in Input Tax Credit (ITC). The applicable IGST rate on valves is 18%.

  Apex Engineering Ltd. Export Comparison (Transaction Value: INR 10,000,000)

  [ OPTION A: LUT Route ]                   [ OPTION B: IGST Payment Route ]
  ─────────────────────────────────────     ─────────────────────────────────────
  Output IGST Paid:        INR 0            Output IGST Paid:        INR 1,800,000
  Cash Outflow:            INR 0            Cash Outflow:            INR 600,000 (net)
  ITC Utilization:         INR 0            ITC Utilization:         INR 1,200,000
  Refund Claimed:          INR 1,200,000    Refund Claimed:          INR 1,800,000
                           (Unutilized ITC)                          (IGST Output Tax)
  Time to Cash Disbursal:  45–60 Days       Time to Cash Disbursal:  15–25 Days

Analysis: Under the LUT route, Apex pays nothing upfront and files Form RFD-01 to recover its INR 1,200,000 ITC. Under the IGST payment route, Apex uses its INR 1,200,000 ITC balance and pays INR 600,000 in cash, then recovers the full INR 1,800,000 via automated customs refund. The IGST route provides faster cash recovery, but requires sufficient liquidity to clear the initial output liability.

Example 2: SaaS / IT Exporter (Services Route under LUT)

CloudMatrix Technologies, a software company in Bengaluru, provides cloud analytics services to enterprise clients in the United States, generating INR 5,000,000 per month. CloudMatrix incurs INR 180,000 monthly in GST on cloud servers (AWS India), office lease rentals, and outsourced development.

Operational Setup: CloudMatrix files Form GST RFD-11 at the start of the financial year.
Invoicing: Monthly invoices are billed with zero tax, bearing the standard LUT export declaration.
Payment: Foreign remittances are received in USD via an authorized dealer bank, which generates electronic FIRCs.
Refund Execution: Every quarter, CloudMatrix files Form GST RFD-01 on the GST portal, attaching Statement 2 and FIRC mapping, recovering 100% of the accumulated INR 540,000 quarterly ITC without friction.

8. Common GST Export Compliance Mistakes and How to Avoid Them

Simple data-entry mismatches and structural errors can result in frozen refunds, automated scrutiny notices (Form GST ASMT-10), and severe liquidity bottlenecks.

                         TOP 5 GST EXPORT COMPLIANCE ERRORS
┌───────────────────────────────────────┬───────────────────────────────────────┐
│ ERROR                                 │ SOLUTION                              │
├───────────────────────────────────────┼───────────────────────────────────────┤
│ 1. Port Code / Invoice Mismatch       │ Exact validation between GSTR-1       │
│    between GSTR-1 and ICEGATE         │ (Table 6A) and Shipping Bill data     │
├───────────────────────────────────────┼───────────────────────────────────────┤
│ 2. Failure to File Annual LUT (RFD-11)│ Renew LUT every March before the new  │
│    Prior to Export Shipments          │ financial year starts on April 1st    │
├───────────────────────────────────────┼───────────────────────────────────────┤
│ 3. Delay in Foreign Remittance Beyond │ Track FEMA 9-month window closely;    │
│    the Mandated RBI Timeline          │ seek AD Bank extension if delayed     │
├───────────────────────────────────────┼───────────────────────────────────────┤
│ 4. Including Blocked Credits (Sec 17) │ Filter out motor vehicles, food, and  │
│    in RFD-01 Refund Calculations      │ non-qualifying inputs from Net ITC    │
├───────────────────────────────────────┼───────────────────────────────────────┤
│ 5. Misclassifying "Intermediary"      │ Ensure foreign contracts establish a  │
│    Services as Zero-Rated Exports     │ principal-to-principal relationship   │
└───────────────────────────────────────┴───────────────────────────────────────┘

1. Invoice Matching Errors (Error Codes SB005, SB006)

The Issue: The ICEGATE automated refund engine flags errors when the invoice number declared in the Shipping Bill does not match the invoice number reported in Table 6A of GSTR-1 character-for-character.
Resolution: Ensure that prefixes, slashes, and leading zeros are identical across both systems. If an error occurs, file an amendment using Table 9A of GSTR-1 in the subsequent tax return.

2. Exporting Without an Active LUT

The Issue: Executing zero-rated exports after March 31 without renewing the LUT on the GST portal for the new fiscal year.
Resolution: Complete the annual online LUT renewal process every March. If an export occurs before renewal, the tax authority may treat the consignment as an unauthorized non-tax-paid supply and demand IGST with interest under Section 50.

3. Exceeding Foreign Exchange Realization Deadlines

The Issue: Under Rule 96B of the CGST Rules, if export proceeds are not realized within the timeline prescribed under the Foreign Exchange Management Act (FEMA)—typically 9 months from the invoice date—the exporter must repay the refunded GST amount with interest.
Resolution: Implement an automated tracking system for e-BRC realization. If foreign buyer payments are delayed due to commercial disputes, apply for formal time extensions through your Authorized Dealer (AD) Bank before the statutory deadline expires.

4. Claiming Blocked or Ineligible Input Tax Credit

The Issue: Including ITC on capital goods, employee health insurance, motor vehicles, or personal consumption items (blocked under Section 17(5)) in the "Net ITC" pool of Form GST RFD-01.
Resolution: Maintain segregated ledger accounts for eligible input goods and input services. Exclude all Section 17(5) items and capital goods from the numerator in the Rule 89(4) formula.

5. Intermediary Service Classification Traps

The Issue: Under Section 13(8)(b) of the IGST Act, the "Place of Supply" for intermediary services (such as commission agents or facilitators who arrange supplies between two other parties) is deemed to be the location of the supplier (India), disqualifying the transaction from zero-rated export status.
Resolution: Review customer contracts to ensure services are delivered on a principal-to-principal basis. The exporter must independently provide the main underlying service rather than acting as a broker or booking facilitator.

9. Key Regulatory and Compliance Considerations

Cross-border businesses operating in India must keep several broader trade and tax rules in mind:

Rupee-Denominated Trade Settlements: Following RBI operational guidelines, export trade settlements executed in Indian Rupees through authorized Special Rupee Vostro Accounts (SRVA) are legally recognized as valid convertible foreign exchange receipts for all zero-rated GST export benefits and export incentives.
Supplies to SEZ Units and Developers: Supplies to SEZ units are treated identically to physical exports under Section 16 of the IGST Act. However, the supplier must obtain a formal endorsement from the SEZ Specified Officer (SO) confirming that the goods or services were procured for authorized operations before filing for a tax refund.
Deemed Exports: Specific domestic supplies—such as supplies to Export Oriented Units (EOUs), Advance Authorization holders, or EPCG license holders—are notified as "Deemed Exports" under Section 147. These are not zero-rated at the time of supply, but either the supplier or the recipient can claim a full refund of the GST paid.

Frequently Asked Questions

Are exports completely tax-free under Indian GST?

Yes, exports are classified as zero-rated supplies under Section 16 of the IGST Act. The output export transaction attracts a 0% tax rate, and exporters are legally entitled to claim a 100% refund of all accumulated input tax credits incurred on raw materials, capital goods, and input services.

What is the validity period of an export Letter of Undertaking (LUT)?

An export Letter of Undertaking (Form GST RFD-11) remains valid for exactly one financial year, expiring on March 31st. Exporters must submit a fresh online renewal application through the GST portal prior to the start of every new fiscal year (April 1st) to continue exporting without tax payment.

How long does it take to receive an IGST export refund?

For goods exported with IGST payment, the shipping bill acts as the refund application. Once ICEGATE successfully matches shipping bill data with Table 6A of GSTR-1, the refund is directly credited to the exporter's bank account, typically within 15 to 30 days of data transmission.

Can service exporters claim GST refunds without a shipping bill?

Yes. Because service exports generate no physical shipping bills, service exporters must file Form GST RFD-01 on the GST portal. They must substantiate their zero-rated claims using Foreign Inward Remittance Certificates (FIRC), Electronic Bank Realization Certificates (e-BRC), customer service agreements, and export invoices.

What happens if export proceeds are not realized within the RBI timeline?

If export proceeds are not realized within the Reserve Bank of India's stipulated 9-month timeframe from the invoice date, the zero-rated status is revoked. The exporter becomes legally liable to deposit the applicable GST amount along with statutory interest under Section 50 within 30 days.

What is the key difference between zero-rated and exempt supplies?

Zero-rated supplies apply exclusively to exports and SEZ supplies where output tax is 0% and input tax credit (ITC) is fully refundable. Exempt supplies carry a 0% output rate for domestic sales, but all input tax credits are strictly blocked and cannot be claimed or refunded.

Conclusion

India's zero-rated GST framework provides a transparent, structured mechanism for exporters to eliminate indirect tax overhead from their international pricing. Whether you choose the Letter of Undertaking (LUT) route to preserve liquidity or the IGST payment route for automated customs processing, maintaining strict alignment between your commercial invoices, GST returns, and ICEGATE customs declarations is critical to ensuring fast refund turnarounds.

If you are an international buyer seeking reliable manufacturing partners in India or an Indian exporter looking to expand into global markets, working with vetted suppliers and clear compliance workflows is key to seamless international trade.

Connect with verified exporters, verify supplier credentials, or post your global trade buying requirements directly on Today Adviser to streamline your cross-border supply chain.

GST on Exports from India in 2026: Rates, LUT, Refunds & Complete Guide