Letter of Credit for Indian Exporters: How It Works, Types & How to Avoid Costly Mistakes

Introduction

The first time I received a Letter of Credit, I stared at it for a long time. It was a dense, formal document from a bank in Germany, filled with coded references to UCP 600, specific document requirements, dates, port codes, and clause after clause of conditions I had never encountered before. I did not know what half of it meant. I shipped the goods, submitted the documents to my bank, and waited — only to receive a call from my bank's trade finance officer telling me there were three discrepancies in my document set and the German bank was withholding payment.

That experience cost me six weeks of delayed payment and taught me more about Letters of Credit than any textbook could. The LC is simultaneously the most powerful payment protection tool available to an exporter and the most technically demanding. Used correctly, it replaces your trust in a stranger buyer with the iron guarantee of their bank. Used carelessly, it becomes a trap that can delay or block your payment on perfectly legitimate shipments because of a single wrong date, a mismatched description, or a B/L that says "Received for Shipment" instead of "On Board."

This guide covers everything an Indian exporter needs to know about Letters of Credit in 2026 — what they are, how the mechanism works step by step, the different types you will encounter, what documents you typically need to present, the most common discrepancies that block payment, and what to do when things go wrong.

What Is a Letter of Credit?

A Letter of Credit (LC) — also called a Documentary Credit — is a written undertaking issued by a bank (the Issuing Bank) on behalf of its customer (the buyer/importer) to pay a specified amount to a named beneficiary (you, the exporter) upon presentation of specified documents that comply with the terms and conditions of the LC, within a stipulated time period.

Strip away the formal language and the core concept is simple: the buyer's bank guarantees your payment, not the buyer. You are no longer relying on the buyer's willingness or ability to pay. You are relying on their bank — a regulated financial institution that has already assessed the buyer's creditworthiness before agreeing to issue the LC.

This distinction is the entire value proposition of an LC. When you ship goods worth ₹1 crore to a buyer you have never met, in a country whose legal system you cannot easily access, you need more than the buyer's promise to pay. An LC from their bank — especially a reputable, internationally recognised bank — is a commitment that holds even if the buyer goes bankrupt, disputes the quality, or simply tries to delay payment.

The catch — and there is always a catch — is that the LC's guarantee is conditional. The bank's obligation to pay arises only when you present documents that comply strictly with every condition specified in the LC. If your documents have discrepancies — even minor ones — the bank can refuse payment. This is why understanding LCs deeply is not optional for any exporter who wants to use them reliably.

The Legal Framework: UCP 600

Before going through the mechanics, you need to know about UCP 600. The Uniform Customs and Practice for Documentary Credits, 2007 Revision (UCP 600) is a set of rules published by the International Chamber of Commerce that governs how documentary credits operate globally. Almost every LC in international trade includes the clause "Subject to UCP 600" — which means the entire interpretation of the LC, the obligations of the banks, and the standards for document examination are governed by UCP 600's 39 articles.

You do not need to memorise UCP 600. But you should know it exists, understand that it is the rule book under which your LC operates, and know that if you ever have a dispute with a bank about document compliance or payment refusal, UCP 600 is the primary reference. Key articles that affect you as an exporter:

• Article 14: Standard for examination of documents — banks have 5 banking days to examine your documents and determine compliance
• Article 16: What banks do with discrepant documents — they must notify you of rejection with specific reasons
• Article 20–28: Requirements for specific document types (bills of lading, airway bills, insurance documents, commercial invoices)
• Article 29: Rules on expiry dates and presentation periods
• Article 36: Force majeure — acts of God or extraordinary events do not extend LC validity

The Parties in an LC Transaction

Understanding who does what in an LC transaction prevents confusion about where your obligation begins and ends.

Applicant (the Buyer/Importer): Your buyer goes to their bank and applies for an LC in your favour. They pay a commission to the bank for issuing it, and the bank typically requires collateral or a credit facility from the buyer.

Issuing Bank (the Buyer's Bank): The bank that issues (opens) the LC on the buyer's instructions. It is the primary obligor — the entity making the payment commitment. Its obligation is to pay you if you present compliant documents.

Advising Bank (Your Bank in India): The issuing bank transmits the LC to a bank in your country (India) via SWIFT. This advising bank receives the LC, authenticates it (confirms it appears genuine), and notifies you. The advising bank does not itself commit to pay — it is merely communicating the LC to you.

Beneficiary (You, the Exporter): The party in whose favour the LC is issued. You are the one who must ship the goods, prepare the documents, and present them to your bank within the LC terms to claim payment.

Negotiating Bank / Confirming Bank: May be the same as the advising bank or a different bank. A negotiating bank examines your documents and, if compliant, pays you in advance (before receiving funds from the issuing bank) — essentially discounting the LC. A confirming bank adds its own payment guarantee to the LC, meaning it pays you even if the issuing bank fails.

How a Letter of Credit Works: Step by Step

Step 1: Sales Contract and LC Agreement

You and the buyer agree on the terms of the sale — product, quantity, price, Incoterms, shipment timeline, and payment by LC. The sales contract or Proforma Invoice you issue should specify the key LC terms you require: LC type (irrevocable), whether confirmed, sight or usance, the issuing bank you will accept, the documents required, and the shipment and expiry dates.

Do not be passive about this. Specify the LC terms in your Proforma Invoice. If you accept any issuing bank from any country, you have no control over the payment risk. If you require a confirmed LC from a first-class bank, say so upfront.

Step 2: Buyer Opens the LC at Their Bank

The buyer goes to their bank (the issuing bank) and applies for an LC. They provide the bank with all the transaction details: your name and address as beneficiary, the currency and amount, the product description, required documents, shipment port and destination, shipment deadline, presentation period, and expiry date.

The issuing bank assesses the buyer's creditworthiness and, if satisfied, issues the LC. They charge the buyer an LC issuance commission — typically 0.1–0.5% of the LC value plus a flat opening fee.

Step 3: LC Transmitted to Your Bank via SWIFT

The issuing bank sends the LC to your advising bank in India via SWIFT (MT700 message format). The SWIFT transmission is the authentic channel — any LC that arrives only as a PDF email attachment without SWIFT confirmation should be treated with extreme caution until your bank verifies its authenticity.

Your advising bank receives and authenticates the LC — confirms it is a genuine SWIFT message from the issuing bank. They then notify you and provide you a copy of the LC text.

Step 4: Review the LC Carefully — Before You Ship Anything

This step is where most LC problems are preventable. Before you produce a single document or move a single shipment, read the LC completely and carefully. Check every condition against your ability to comply.

Things to verify:

• Your name and address: Exactly as you operate — any variation can cause document discrepancy
• Product description: Must be specific enough to identify your goods but not so specific that a minor wording variation in your invoice causes a mismatch
• Amount: Does it cover your full invoice value plus any buffer for partial shipments?
• Incoterms: Match what you agreed (FOB, CIF, etc.)
• Port of loading: Is this your actual shipping port?
• Latest shipment date: Can you realistically ship by this date?
• Presentation period: How many days after shipment do you have to present documents? The default under UCP 600 is 21 days, but the LC may specify a shorter period.
• Expiry date and place: The LC expires on a specific date, at a specific place (India or the issuing bank's country). Ensure you present documents before expiry.
• Documents required: Can you obtain every document listed? Some LCs require documents from specific authorities — ensure those authorities exist and can issue in the required format.
• Partial shipments: Allowed or prohibited? If prohibited, you must ship the entire quantity in one shipment.
• Transhipment: Allowed or prohibited? If you ship via a hub port (like Colombo or Singapore), and transhipment is prohibited, your B/L must show direct sailing.

If anything is wrong, unachievable, or unclear — request an amendment before you ship. LC amendments require the buyer's consent and the issuing bank's agreement and take time. Getting this done before shipment is far easier than trying to resolve discrepancies after documents are presented.

Step 5: Ship the Goods as per LC Terms

Once you are satisfied the LC is workable, ship your goods within the latest shipment date. Ship from the port specified in the LC. Use the transport mode specified. Do not ship partial quantities if the LC prohibits it. Ensure your CHA is aware of all LC conditions — particularly the B/L consignee instruction (usually "To the Order of [Issuing Bank Name]") and any required B/L notations.

Step 6: Collect All Required Documents

After shipment, gather every document the LC requires. For a typical goods export LC, this usually includes:

• Commercial Invoice (in the number of originals and copies specified)
• Full set of original Bills of Lading (usually 3/3 originals, though sometimes 2/3 or 1/3)
• Packing List
• Certificate of Origin
• Insurance Policy or Certificate (if CIF LC)
• Inspection/Quality Certificate (if specified)
• Beneficiary's Certificate (a statement signed by you certifying something specific — e.g., "We certify that goods conform to contract specifications")
• Bill of Exchange / Draft drawn on the issuing bank (for usance LCs)

The exact documents required are whatever the LC specifies. Do not present more documents than the LC requires — additional unsolicited documents are generally not examined by the bank and their presence can occasionally create complications.

Step 7: Present Documents to Your Negotiating Bank

Compile the full document set and present it to your bank (the negotiating or presenting bank) within the LC's presentation period. Your bank will examine the documents against the LC terms. Under UCP 600 Article 14, the bank has up to 5 banking days to examine documents and determine compliance.

If your documents are compliant, your bank forwards them to the issuing bank and, for a sight LC, receives payment which is then credited to your account. For a usance (deferred payment) LC, your bank may offer to discount the LC — paying you now at a discount in exchange for the right to receive the full LC payment on the future date.

Step 8: Payment

For a sight LC (payment at sight on compliant document presentation): payment is typically credited to your account within 5–10 banking days after your bank forwards compliant documents to the issuing bank.

For a usance LC (deferred payment — 30, 60, 90, 180 days after shipment or after sight): payment is made on the specified future date. You have effectively extended credit to the buyer for that period.

Types of Letters of Credit

Not all LCs are the same. Here are the types you will encounter in Indian export trade and what each means for you.

Irrevocable vs Revocable

Under UCP 600, all LCs are irrevocable by default — meaning they cannot be amended or cancelled without the agreement of all parties (issuing bank, you, and the applicant). A revocable LC can be cancelled or modified by the issuing bank without your consent — it offers essentially no payment protection. Never accept a revocable LC. Under UCP 600, if the LC does not state whether it is revocable or irrevocable, it is irrevocable. Any LC explicitly stated as revocable should be immediately rejected and converted to irrevocable before you ship.

Confirmed vs Unconfirmed

An unconfirmed LC carries only the issuing bank's payment guarantee. If the issuing bank defaults, or if the buyer's country faces economic or political crisis, you may not receive payment despite having compliant documents.

A confirmed LC has an additional guarantee added by a second bank — typically your advising bank in India or another first-class internationally recognised bank. The confirming bank's guarantee is independent of the issuing bank. Even if the issuing bank fails, the confirming bank pays you.

Confirmation is especially important for transactions with:

• Banks in countries with political or economic instability
• Banks you do not recognise or cannot easily verify
• Large transaction values where the downside risk is significant

Confirmation costs extra — the confirming bank charges 0.2–0.5% of the LC value per annum. This cost is typically negotiated to be borne by the buyer (it is, after all, the buyer's bank's creditworthiness that necessitates confirmation). If a buyer is resistant to paying for confirmation, it is worth considering why — and whether the country risk justifies proceeding at all.

Sight LC vs Usance (Deferred Payment) LC

A sight LC requires payment immediately upon presentation of compliant documents. You present the documents, the bank checks them within 5 days, and if compliant, you receive payment. From your perspective as an exporter, sight is better — you get paid faster.

A usance LC (also called term, time, or deferred payment LC) requires payment at a future date — typically expressed as "60 days after sight" (60 days after the issuing bank acknowledges compliant documents) or "90 days after B/L date." Under a usance LC, you are essentially extending credit to the buyer for the specified period.

Usance LCs are common in established trade relationships where the buyer needs time to sell the goods before paying. The advantage to you: you can discount a usance LC at your bank (the bank pays you now, at a discount, and collects the full amount from the issuing bank on maturity). The cost of discounting is a finance charge that reduces your net realisation.

Transferable LC

A transferable LC allows you (the first beneficiary) to transfer all or part of the LC to one or more second beneficiaries — typically your supplier or manufacturer if you are a trading house or merchant exporter sourcing goods for re-export.

This is useful when you receive an order but source the goods from a manufacturer rather than producing them yourself. You can transfer the LC to your manufacturer as payment assurance, allowing them to produce and ship without requiring advance payment from you.

Transferable LCs have specific operational requirements — the LC must be explicitly stated as "transferable" in its text. If the LC does not say "transferable," it cannot be transferred. Transfers are typically done through the advising/transferring bank at a fee.

Back-to-Back LC

A back-to-back LC is a new LC opened by you (as beneficiary of the original "master LC") in favour of your supplier, using the master LC as collateral. Unlike a transferable LC, a back-to-back does not involve transferring the original LC — you open a separate, new LC backed by the master LC's value.

Back-to-back LCs are more flexible than transferable LCs but more complex. Your bank must be willing to issue the back-to-back LC against the master LC — not all banks will, and those that do charge fees for the facility.

Standby Letter of Credit

A standby LC is not a primary payment mechanism — it is a guarantee instrument. It is drawn upon only if the buyer defaults on their primary payment obligation (typically open account trade). The exporter presents the standby LC to the bank only as a last resort after the buyer has failed to pay.

Standby LCs are common in long-term supply contracts and service agreements where day-to-day payments happen through other means (bank transfer, cheque) but the standby LC provides a backstop in case of default. Less common in standard goods export transactions.

Red Clause LC

A red clause LC contains a clause (historically written in red ink, hence the name) authorising the advising bank to make advance payments to the beneficiary before shipment — typically to finance production or procurement. The advance is made against a simple receipt and undertaking from the exporter.

Red clause LCs shift the pre-shipment financing risk to the issuing bank and, through them, to the buyer. They are used in specific trade relationships — typically where the exporter is a primary producer (agricultural goods, raw materials) and needs pre-harvest or pre-production financing. Not commonly encountered in standard manufactured goods export trade.

Documents Under an LC: What Banks Actually Check

The bank's document examination under UCP 600 is a formal process with specific standards. Understanding what banks look for — and the level of strictness applied — is essential for producing compliant documents.

How Banks Examine Documents

Banks examine documents on their face — they do not investigate the underlying transaction. They check whether the documents, read together, appear to comply with the LC terms and with each other. They look for inconsistencies between documents (an invoice says 500 cartons, the packing list says 498 cartons — that is a discrepancy). They check that each document individually meets the requirements of the LC and UCP 600.

UCP 600 Article 14(d) states that data in a document need not be identical to data in other documents, but must not conflict with data in other documents. Minor variations in phrasing that do not change meaning are generally acceptable. But factual inconsistencies — different quantities, different values, different descriptions — are discrepancies.

Commercial Invoice Requirements under UCP 600

Article 18 of UCP 600 governs commercial invoices. Key requirements:

• Must appear to be issued by the beneficiary (you)
• Must be made out in the name of the applicant (your buyer, not a third party)
• Must be in the same currency as the LC
• The description of goods must correspond with the LC description (it can be less detailed, but must not contradict the LC)
• The amount cannot exceed the LC amount

Bill of Lading Requirements

Article 20 of UCP 600 governs bills of lading. Critical requirements:

• Must appear to indicate the name of the carrier
• Must be signed by the carrier, master, or their named agent
• Must indicate goods have been shipped on board a named vessel at the port of loading — the "on board" notation must be present with the vessel name and date
• Must indicate the port of loading and port of discharge stated in the LC
• Must be the sole original or a full set of originals as specified in the LC
• If the LC prohibits transhipment, the B/L must not indicate transhipment will or may occur — though UCP 600 has some flexibility for containerised cargo

The Most Common LC Discrepancies — And How to Avoid Each One

Discrepancies are differences between your presented documents and the LC terms. Even one discrepancy gives the issuing bank the right to refuse payment until the discrepancy is resolved or waived. Here are the most common ones I have encountered and seen in Indian export trade.

1. Late Presentation of Documents

You presented documents after the LC's presentation period expired (typically 21 days after shipment, but the LC may specify less). This is entirely avoidable — collect documents promptly after shipment and present to your bank immediately. Do not wait until the last week.

2. Late Shipment

Goods were shipped after the latest shipment date stated in the LC. The date on the B/L is the shipment date the bank uses. If your B/L shows October 15 and the LC required shipment by October 10, it is a discrepancy. Book cargo space well in advance to ensure you can meet the shipment deadline.

3. Invoice Description Does Not Match LC

The product description on your commercial invoice differs from the LC. Even minor variations matter. If the LC says "100% Cotton Woven Fabric, 120 gsm, Grey" and your invoice says "Cotton Fabric, Grey" — that is potentially a discrepancy. Your invoice description must at minimum cover all the specifics in the LC description. It can be more detailed, but it must not omit LC-stated specifics.

4. Invoice Amount Exceeds LC Amount

Under UCP 600 Article 18(b), the invoice amount cannot exceed the LC amount. If your invoice is for USD 102,000 and the LC is for USD 100,000, it is a discrepancy. Always keep your invoice at or below the LC value. If your final shipment value exceeds the LC, request an LC amendment before shipping.

5. B/L Not On-Board

You presented a "Received for Shipment" B/L instead of the "On Board" B/L required by UCP 600 and virtually every LC. Received for Shipment only means the goods are at the terminal. On Board means they are loaded on the vessel. Always ensure your B/L has the on-board notation — vessel name and date. Chase your CHA or shipping line for the on-board B/L as soon as the vessel departs.

6. Consignee on B/L Does Not Match LC Instruction

Many LCs require the B/L to be consigned "to the order of [Issuing Bank Name]" — not to your buyer's name directly. If you instruct the shipping line to make the B/L out to the buyer, the bank cannot control the goods (a negotiable, to-order B/L is how the bank retains control until payment). Check the LC consignee instruction before instructing the shipping line.

7. Partial Shipment When LC Prohibits It

You shipped 90% of the LC quantity when the LC states "partial shipments not allowed." Even if you intended to ship the balance in a second shipment, the first shipment itself is now discrepant.

8. Certificate of Origin From Wrong Issuing Authority

The LC specifies "Certificate of Origin issued by Chamber of Commerce" but you submitted one issued by an Export Promotion Council. These are different bodies. Check the exact required issuing authority and obtain the COO from that specific body.

9. Insurance Document Covers Wrong Amount or Wrong Risks

Under a CIF LC, the LC typically specifies the minimum insurance value (often 110% of CIF value) and the coverage type. If your insurance covers 100% of CIF or covers ICC Clause C when the LC requires ICC Clause A, it is a discrepancy.

10. Inconsistency Between Documents

The packing list shows 500 cartons, the invoice shows 498 cartons, and the B/L shows "500 CTNS." Any data that is consistent in meaning but numerically inconsistent between documents is a discrepancy. Reconcile all documents before presenting — every quantity, every weight, every reference must be consistent across invoice, packing list, B/L, and COO.

What Happens When Your Documents Have Discrepancies

When your bank identifies discrepancies during scrutiny, you typically have three options:

Option 1: Correct the Documents and Resubmit

If the discrepancy is in a document you can amend — your commercial invoice, your packing list, your beneficiary's certificate — and you are still within the presentation period, correct it and resubmit. This is the cleanest resolution. Act immediately on receiving the bank's notification; every day of delay uses up your remaining presentation window.

Option 2: Waiver by the Issuing Bank (Through the Applicant)

Your bank forwards the discrepant documents to the issuing bank "on approval" — with a cover letter listing the discrepancies and requesting the issuing bank to seek the applicant's waiver. If the buyer consents (they may, especially in an established relationship where the goods are genuinely what they ordered), the issuing bank waives the discrepancies and pays. This process typically takes 5–10 additional days and payment is not guaranteed until the waiver is granted.

Option 3: Send Documents on Collection Basis

If neither correction nor waiver is feasible in time, your bank can send the documents on collection — meaning as a collection item rather than under the LC. Payment is then at the buyer's discretion (like a DA or DP transaction), not guaranteed by the LC mechanism. This effectively defeats the payment protection of the LC.

LC Costs: What You and the Buyer Pay

LC transactions involve fees at multiple points. Knowing who typically bears each cost helps you negotiate terms and price your orders correctly.

• LC issuance commission (Buyer pays to Issuing Bank): Typically 0.1–0.5% of LC value plus a flat opening fee. This is the buyer's cost of obtaining the LC.
• Advising commission (paid by you to Advising Bank): Typically ₹1,000–5,000 flat fee for receiving and notifying you of the LC.
• Negotiation or presentation charges (paid by you): Typically 0.1–0.25% of LC value at your bank for examining and forwarding documents.
• Confirmation charges (if LC is confirmed): 0.2–0.5% per annum of LC value, charged by the confirming bank. This is typically negotiated to be borne by the buyer, but it is worth specifying in your contract terms.
• Amendment charges: Each LC amendment costs both parties fees — typically USD 50–100 per amendment at the issuing bank, plus similar fees at the advising bank. Minimising amendments by getting the LC right from the start saves money.
• Discounting charges (if you discount a usance LC): Based on the discount rate (typically SOFR/LIBOR + spread) for the usance period. This is the cost of receiving early payment on a term LC.

Export Finance Against LC: Packing Credit and Discounting

One of the underused benefits of an LC for Indian exporters is the ability to use it as collateral for pre-shipment finance.

Packing Credit Against LC: Once you receive a confirmed LC or even a good unconfirmed LC from a reputable issuing bank, you can approach your bank for a packing credit loan to finance production and procurement. The bank treats the LC as collateral — you have a guaranteed payment coming once you ship and present compliant documents. Banks are generally more willing to extend packing credit when an LC is in place than for open-account orders. Interest rates on export packing credit are concessional (particularly for MSME exporters under the Interest Equalisation Scheme).

Post-Shipment LC Discounting / Negotiation: After shipment and document presentation, a sight LC gives you payment in approximately 5–10 days. For usance LCs, you have to wait the usance period (30–180 days). Many exporters choose to discount usance LCs — their bank pays them at a discount immediately and collects the full amount from the issuing bank at maturity. This converts a future receivable into immediate cash, improving your working capital. The discount cost is a financing charge that reduces your net realisation — factor this into your pricing when quoting usance terms.

Frequently Asked Questions

How do I verify that an LC from a foreign bank is genuine?

All genuine LCs in international trade are transmitted through the SWIFT network using MT700 or MT710 message formats. Your advising bank receives the SWIFT message and authenticates it against their SWIFT records. If someone sends you an LC only as a PDF email attachment without any SWIFT reference, ask your bank to confirm they have received the corresponding SWIFT message. Never treat an email PDF as a verified LC — forged LC PDFs are a known fraud vector in international trade.

My LC has already been used for one shipment. Can I use it again for another?

It depends on the LC type. A standard LC is used for one shipment (or one set of shipments if partial shipments are allowed, up to the total LC value). A revolving LC reinstates automatically after each drawing, either for a fixed number of times or for a fixed period — it is specifically designed for repeat supply relationships. A standard non-revolving LC cannot be "used again" beyond its total value and expiry date.

The issuing bank refused my documents saying they have discrepancies I disagree with. What can I do?

Under UCP 600 Article 16, the issuing bank must notify you of the discrepancies with a specific, complete list, by telecommunication (SWIFT), within 5 banking days of document receipt. If they refuse to pay on grounds you believe are incorrect under UCP 600, you can:

1. Request a specific, complete explanation of each alleged discrepancy
2. Have your bank's international trade finance team review whether the refusal is valid under UCP 600
3. If you believe the refusal violates UCP 600, engage an ICC-affiliated banking law expert
4. File a complaint with the ICC Banking Commission if the bank's conduct is clearly contrary to UCP 600

Most banks do not refuse payment on spurious grounds — the reputational and legal risk is significant. But understanding your rights under UCP 600 gives you a basis to challenge unreasonable refusals.

Can I ask my buyer to amend the LC if I find problems after it arrives?

Yes — and you should. If the LC as received has terms you cannot comply with (wrong shipment date, incorrect port, unachievable document requirements), contact your buyer immediately and ask them to request an amendment from their issuing bank. Amendments require the issuing bank's issuance (at a fee) and your formal acceptance. Never ship against an LC you have not accepted or that has terms you cannot meet — shipping and then discovering you cannot present compliant documents is far more painful than the delay caused by getting an amendment first.

What is the difference between an LC and a Bank Guarantee?

An LC is a payment instrument — it is designed to pay the beneficiary when they present specified documents. A Bank Guarantee is a contingency payment instrument — it is designed to compensate the beneficiary if the applicant fails to perform a specific obligation. LCs are used in trade transactions. Bank Guarantees are used for performance obligations (performance bonds, bid bonds, advance payment guarantees). They are governed by different sets of rules (LCs by UCP 600; Bank Guarantees by URDG 758).

I received payment under LC but the buyer is now claiming the goods were defective. Can they recover the payment?

No, not through the LC mechanism. Under the principle of document independence (UCP 600 Article 4 and 5), the bank's obligation to pay is independent of the underlying commercial contract between you and the buyer. Once compliant documents were presented and payment was made, the LC transaction is complete. The buyer's claim about defective goods is a separate commercial dispute governed by your sales contract — not the LC. They would need to pursue that claim through the contractual dispute resolution mechanism (arbitration, litigation) — they cannot reverse the LC payment.

Conclusion

A Letter of Credit, used correctly, is the most powerful payment protection available to an exporter. It transforms a transaction with an unknown buyer in a distant country from a trust-dependent bet into a bank-backed certainty — as long as you present the right documents in the right way within the right timeframe.

The technical demands of LC compliance are real and should not be underestimated. But they are learnable. The core discipline is simple: read the LC completely before shipping, ensure every condition is achievable, collect your documents promptly after shipment, check every document against every other document for consistency, and present to your bank well within the presentation window.

Build a relationship with your bank's trade finance team. Find one officer who handles your accounts personally, understands your export operation, and will flag LC issues proactively when they see the document set. That relationship is worth far more than any amount of LC theory.