GST LUT: How Exporters Can Export Without Paying GST

 

If you're running an export business, you already know how much cash flow matters. Every rupee stuck in a pending tax refund is a rupee you can't put back into raw materials, logistics, or your next order. And that's exactly the problem the Letter of Undertaking (LUT) under GST solves.

Simply put, an LUT lets eligible exporters ship goods or provide services to overseas clients without paying IGST at all — upfront, legally, and without needing to chase a refund afterward. No outflow. No wait. No blocked capital.

Whether you're a manufacturer, a merchant exporter, a freelancer billing foreign clients, or a startup with overseas revenue — understanding LUT isn't just useful. It's essential.

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What Is an LUT, Really?

Under Section 16 of the IGST Act, exports are treated as zero-rated supplies. That's the government's way of saying: we don't want to tax your exports. But here's the thing — zero-rated doesn't automatically mean zero payment. It just means you have two ways to handle it:

• Export with payment of IGST, then file for a refund later, or
• Export under an LUT, and skip the IGST payment entirely

An LUT — short for Letter of Undertaking — is essentially a declaration you file with the GST department before exporting. You're telling the government: "I'll complete my export, I'll bring in foreign exchange within the required time, and I don't need to pay IGST upfront."

It's filed online in Form GST RFD-11 on the GST portal and is valid for one full financial year (April to March).

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Why Do Most Exporters Choose LUT Over Paying IGST?

Honestly, it comes down to one word: cash flow.

When you pay IGST on every shipment and then apply for a refund, that money sits with the government for weeks — sometimes 60 to 90 days. For a high-volume exporter, that's significant working capital frozen in the system.

Think about a garment manufacturer in Tirupur exporting to buyers in Europe. Every consignment goes out, IGST gets paid, a refund is filed, and then the wait begins. All that while they're buying more fabric, paying workers, and managing freight costs. With a valid LUT, that money never leaves the business in the first place.

Same goes for a Bengaluru-based IT company billing a US client, or a freelancer in Chennai providing services to businesses in Australia. The LUT route just makes more financial sense — especially if you're growing.

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Who Can Apply for LUT?

The good news is that eligibility is fairly broad. Most registered GST taxpayers who export goods or services can apply.

Who qualifies:

• Exporters of goods and services
• Merchant exporters
• Freelancers and independent consultants with foreign clients
• Startups and digital businesses earning revenue from overseas

Who doesn't qualify: If you've been prosecuted under the CGST Act or IGST Act for tax evasion exceeding ?2.5 crore, you can't furnish an LUT. You'll need to export on payment of IGST instead. For the overwhelming majority of compliant taxpayers, though, LUT is well within reach.

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The Real Benefits of Exporting Under LUT

This isn't just a compliance checkbox — the benefits are felt every single month.

• No IGST goes out the door: Your funds stay in the business, not held with the government.
• Better working capital: Especially important for MSMEs and exporters operating on thin margins or high volumes.
• No refund filing needed: When you export under LUT, there's no IGST to reclaim. That's one entire workflow you can remove from your to-do list.
• You can still claim ITC refunds: Even under LUT, if you've accumulated input tax credits that can't be offset against output tax (since there's no IGST due), you can separately claim a refund of that ITC under Rule 89 of the CGST Rules. This is a benefit many exporters miss.
• Cleaner, internationally standard invoicing: Zero-rated invoices are simpler and work well with global buyers.
• Sharper pricing: Without embedded tax costs, you can stay competitive on price.

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How to Apply for LUT Online — Step by Step

It's entirely digital and usually done in under an hour if your documents are ready.

1. Log in to the GST portal at www.gst.gov.in
2. Go to Services → User Services → Furnish Letter of Undertaking (LUT)
3. Select the financial year you're filing for
4. Fill in Form GST RFD-11
5. Upload any required supporting documents
6. Sign using a DSC (Digital Signature Certificate) or EVC (Electronic Verification Code), then submit

Documents typically needed:

• GSTIN and PAN details
• IEC (Import Export Code) — primarily required for goods exporters
• Previous LUT details — if it's a renewal

LUT is valid for the entire financial year. You need to renew it before your first export of every new year. Miss that renewal, and your shipments won't qualify as zero-rated for that period. It's one of the most avoidable compliance errors out there.

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How Exports Actually Work Under LUT

Once your LUT is accepted, the process becomes fairly routine — but getting each step right matters.

For goods exporters:

• Issue a zero-rated tax invoice with the exact wording: "Supply made without payment of IGST under LUT" along with your LUT reference number
• Prepare your export documents: shipping bill, commercial invoice, packing list, bill of lading
• Make sure your GSTIN appears on the shipping bill — this is how the GST system matches your returns with ICEGATE (Customs) data
• Report exports in GSTR-1 under Table 6A
• Reflect zero-rated turnover in GSTR-3B under Table 3.1(b)

For service exporters:

• Same invoice wording applies — clearly state "without payment of IGST under LUT"
• Maintain a FIRC (Foreign Inward Remittance Certificate) or BRC (Bank Realisation Certificate) as proof of export realisation
• Report in GSTR-1 under Table 6A — this is the same table used for goods exports. Both goods and service exports go into Table 6A. There's no separate table for service exports
• Reflect in GSTR-3B under Table 3.1(b) accordingly

Critical Time Limits You Can't Afford to Miss

This part doesn't get enough attention, but it's non-negotiable:

• For goods: The export must be completed within 3 months from the date of the tax invoice
• For services: Foreign exchange must be received within 1 year from the date of the invoice

If you don't meet these timelines, the zero-rated treatment falls away — and you become liable to pay the tax along with interest. Track these dates. Don't treat them as soft deadlines.

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LUT vs. Exporting With IGST Payment — Which Makes Sense for You?

For most exporters, LUT is the cleaner, more efficient route. The IGST payment route does have its place — if you've got a large accumulated ITC balance and want to use the refund mechanism to draw it down, it can make sense. But it's the exception, not the rule.

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Common Mistakes That Can Hurt You

These come up regularly in practice, and most of them are entirely avoidable.

• Exporting with an expired LUT: If your LUT hasn't been renewed for the new year and you ship goods anyway, those exports may lose their zero-rated status — creating unexpected tax liability.
• Loose invoice wording: The invoice must explicitly say "without payment of IGST under LUT." Vague or missing language creates documentation problems down the line.
• Misclassifying exports in GSTR-1: Both goods and service exports belong in Table 6A. Reporting them elsewhere causes mismatches with ICEGATE data and can lead to notices.
• Forgetting to renew before the year starts: File your LUT before the first export of the financial year — ideally before April 1st. Don't let this slip through. One missed renewal can disrupt exports for weeks.
• Breaching the time limits: Not completing a goods export within 3 months, or not realising forex for services within 1 year, converts a clean zero-rated export into a taxable one. These deadlines have real consequences.
• Shipping bill and GSTR-1 mismatches: If the GSTIN, invoice number, or value doesn't match across documents, it can trigger queries from the department. Cross-check before you file.

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How LUT Works Across Different Business Types

Textile Manufacturer (Goods Exporter) A Surat-based fabric exporter files an LUT at the start of each financial year. They raise zero-rated invoices for shipments to Europe, ensure goods ship within 3 months of each invoice, and report everything in GSTR-1 (Table 6A) and GSTR-3B (Table 3.1(b)). No IGST goes out, no refund application is filed.

Merchant Exporter A Mumbai trading firm sources goods from domestic manufacturers and exports them. With their LUT in place, exports go out without IGST. Their domestic suppliers charge GST at the concessional rate of 0.1% (0.05% CGST + 0.05% SGST for intra-state, or 0.1% IGST for inter-state) under Notifications 40/2017-CT(R) and 41/2017-IT(R), keeping the supply chain efficient at both ends.

Freelancer Providing Services Abroad A Chennai-based consultant works with clients in the US and Australia. She files an LUT, raises invoices in foreign currency, collects payment via bank transfer, maintains FIRCs as export evidence, and reports the supplies in GSTR-1 under Table 6A — all without a rupee of IGST going out.

IT Services Company A Pune-based firm delivering software development to a Singapore client issues invoices without IGST, holds FIRCs as proof of realisation, and files quarterly returns cleanly. The LUT removes the IGST-refund cycle from their compliance calendar entirely.

SaaS Startup (Digital Services) An early-stage startup selling subscription software globally adopts LUT from day one. It keeps compliance lightweight during the growth phase, protects cash flow, and avoids the administrative load of tracking refund applications — leaving the team free to focus on what actually matters.

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Bottom Line

LUT is one of the most practical, business-friendly provisions in India's GST framework. It eliminates upfront tax outflow, frees up working capital, and simplifies compliance — all while keeping you fully on the right side of the law.

The filing is online, it doesn't cost anything, and if your documents are in order, it takes about 30 minutes. There's genuinely no reason for any eligible exporter to be paying IGST on shipments they could be making under LUT.

If you haven't filed your LUT for the current year, do it before your next shipment goes out. And if you're advising exporters or managing their compliance, make LUT renewal the very first item on your April checklist. It's a small step that makes a meaningful difference.