Key Takeaways
- An Export LUT is filed on the GST portal using FORM GST RFD-11 under Rule 96A of the CGST Rules, 2017, and is legally grounded in Section 16(3) of the IGST Act, 2017.
- An approved LUT lets you export goods or services as zero-rated supply without paying IGST upfront, protecting your working capital from refund-cycle lockups.
- An LUT is valid for one financial year only and expires on March 31; a fresh LUT must be filed before April 1 each year.
- Eligibility requires an active GSTIN and IEC, and no prosecution for evasion of tax under GST laws exceeding ₹2.5 crore.
- Exporters who do not qualify for an LUT must furnish a Bond (with bank guarantee or surety) instead.
- Under FEMA rules, export proceeds must be realized in convertible foreign exchange within 9 months of export, linked via an eBRC.
What is an Export Letter of Undertaking (LUT)?
An Export Letter of Undertaking (LUT) is a legal document filed electronically on the GST portal under Section 16(3) of the IGST Act, 2017 and Rule 96A of the CGST Rules, 2017. It allows exporters to classify their outbound shipments of goods or services as zero-rated trade. By filing an approved LUT, a business can export without paying Integrated GST (IGST) upfront and waiting to claim a refund later. This helps keep your working capital from getting locked up in government refund cycles during shipping phases.
Under the GST framework, all registered exporters with an active GST registration (GSTIN) and an active Import Export Code (IEC) are eligible to use the LUT facility. However, this is subject to the condition that the exporter has not been prosecuted for evasion of tax under GST laws where the tax evaded exceeds 2.5 Crore Rupees. Exporters who do not meet this condition must instead furnish a Bond with a bank guarantee or surety.
⚠️ The Annual March 31 Renewal Deadline
An Export LUT is valid only for a single financial year. Regardless of whether you file your LUT in April or November, the certificate will expire on March 31. To prevent customs delays at ports, exporters must file a fresh LUT on the GST portal before April 1 for the upcoming financial year.
LUT Route vs. Pay-and-Claim Refund Route
The single biggest financial decision for an exporter is whether to use the LUT facility or the pay-and-claim refund route. Here is how the two compare:
| Factor | LUT Route (Zero-Rated) | Pay-and-Claim Refund Route |
|---|---|---|
| Upfront IGST payment | Not required | Required at shipping bill filing |
| Working capital impact | Preserved — no cash lockup | Locked up until refund is processed |
| Refund claim filing | Not required for the zero-rated supply | Required after goods depart |
| Refund processing time | N/A — no refund cycle | Weeks to months |
| Legal basis | Section 16(3) IGST Act + Rule 96A CGST Rules | Refund provisions under GST law |
| Best suited for | Exporters with regular outbound shipments | Occasional or one-off exporters |
How the LUT Facility Protects Your Working Capital
Without an active LUT, exporters have to use the refund route to clear shipments. This requires paying the applicable Integrated GST (IGST) out of pocket when filing the shipping bill, and then submitting refund claims once the cargo departs. This process can take several weeks or months, tying up significant cash flow. An approved LUT allows you to bypass these upfront tax payments entirely.
Filing Process: Step-by-Step GST Portal Integration
Filing an LUT requires submitting specific indemnifications and witness details on the GST portal. We guide your logistics team through the process:
Eligibility & Account Verification
We review your active GSTIN and IEC to ensure your account meets all compliance standards and has no active customs or GST holds.
LUT Application Drafting
Our team drafts your annual LUT declaration (FORM GST RFD-11), confirming your legal commitment to export the goods or services within the timelines required by customs.
Witness Record Verification
We verify the details of the two independent witnesses required for the application, ensuring all address and ID fields are complete to prevent processing delays.
Electronic Submission & Port Linkage
The application is signed using your Class 3 DSC or EVC (Aadhaar/mobile OTP) and submitted on the GST portal. Once accepted, we provide the LUT reference to your customs broker to link with your ICEGATE shipping bills.
Required Document Checklist
- An active GST registration (GSTIN) on the GST portal.
- An active Import Export Code (IEC) certificate registered with the DGFT.
- Digital access credentials and active profile status on the GST portal.
- Full names, addresses, and identification details of two independent witnesses.
- An active Class 3 Digital Signature Certificate (DSC) or EVC (Aadhaar/mobile OTP) of the authorized signatory.
- Copy of previous shipping bills or export invoices (for existing exporters).
Realization Timelines and FEMA Rules
Using the LUT facility comes with a legal obligation to realize your export payments. Under FEMA rules, exporters must receive full payment for their shipments in convertible foreign exchange within 9 months of the export date. If payments are not received and linked via an eBRC within this period, the exporter must pay the applicable IGST plus interest, or risk having their LUT facility suspended or revoked by the proper officer under Rule 96A(3) of the CGST Rules, 2017.
Sources: Central Board of Indirect Taxes & Customs, GST Council (cbic.gov.in) · GST Portal — FORM GST RFD-11 & Rule 96A (gst.gov.in) · Reserve Bank of India — FEMA Export Realization Master Direction (rbi.org.in) · ICEGATE Customs E-Filing (icegate.gov.in).