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Letters of Credit: Definition, Types, and Usage in Global Trade

In international trade, trust between buyers and sellers (often in different countries) is a critical challenge. A letter of credit (LC) acts as a financial “safety net,” mitigating risks and ensuring transactions proceed smoothly. Issued by banks, LCs guarantee payment from a buyer to a seller—provided the seller meets predefined conditions (e.g., shipping goods, submitting valid documents). This guide explores LCs in depth, from definitions to real-world applications.

Table of Contents#

What is a Letter of Credit?#

A letter of credit is a bank-issued guarantee that a buyer’s payment to a seller will be fulfilled—either by the issuing bank directly paying the seller or reimbursing another bank that has paid the seller. Key features:

  • Neutral Third Party: Banks act as intermediaries, reducing risk for both parties (e.g., a seller fears non-payment; a buyer fears non-delivery).
  • Document-Centric: Payment depends on the seller providing compliant documents (e.g., bill of lading, invoice) that prove goods were shipped or services were rendered.

Types of Letters of Credit#

LCs come in various forms to suit different trade needs:

1. Commercial Letter of Credit#

  • Purpose: Used for single transactions (e.g., importing/exporting goods).
  • How It Works: The issuing bank pays the seller only if the seller submits documents (e.g., bill of lading, commercial invoice) that match the LC’s terms.
  • Example: A U.S. retailer imports electronics from China. The Chinese seller ships the goods and submits a bill of lading (proving shipment) to their bank. The U.S. bank (issuing) then pays the seller.

2. Revolving Letter of Credit#

  • Purpose: For recurring transactions (e.g., monthly shipments of raw materials).
  • How It Works: The credit amount “revolves” (renews) after each shipment, so the buyer doesn’t need a new LC for every order.
  • Example: A European auto manufacturer buys monthly steel from India. After each shipment, the LC’s credit limit resets, allowing the next order to be financed.

3. Confirmed Letter of Credit#

  • Purpose: Adds a second layer of security (useful if the seller distrusts the issuing bank’s reliability).
  • How It Works: A second bank (the confirming bank, often in the seller’s country) guarantees payment—even if the issuing bank defaults.
  • Example: A Brazilian coffee exporter sells to Australia. The Australian bank issues the LC, but a Brazilian bank “confirms” it, ensuring payment even if the Australian bank faces issues.

4. Standby Letter of Credit#

  • Purpose: Acts as a “backup” payment (used if the buyer defaults on their obligation).
  • How It Works: The seller can “draw” on the LC (request payment) only if the buyer fails to fulfill terms (e.g., non-payment, breach of contract).
  • Example: A construction company hires a contractor. If the company defaults on payment, the contractor uses the standby LC to claim funds.

How Do Letters of Credit Work? (Step-by-Step)#

  1. Application: The buyer applies to their bank (issuing bank) for an LC, providing transaction details (goods, price, document requirements).
  2. Issuance: The issuing bank approves the LC (after checking the buyer’s creditworthiness) and sends it to the seller’s bank (advising bank) or directly to the seller.
  3. Shipment & Document Preparation: The seller ships goods (or provides services) and prepares required documents (e.g., invoice, bill of lading).
  4. Document Submission: The seller submits documents to their bank (advising/negotiating bank) for verification.
  5. Document Verification: The advising bank checks documents against the LC’s terms (e.g., do they match the invoice amount? Is the bill of lading valid?).
  6. Payment: If documents are compliant, the advising bank forwards them to the issuing bank. The issuing bank pays the advising bank (or seller), and the buyer reimburses the issuing bank (plus fees).

Costs of Letters of Credit#

Banks charge fees for issuing, verifying, or confirming LCs. Typical costs:

  • Issuance Fee: ~0.1%–2% of the LC amount (varies by bank, risk, and transaction size).
  • Confirmation Fee: For confirmed LCs, the confirming bank charges ~0.5%–1% (for assuming payment risk).
  • Advising/Negotiating Fee: The seller’s bank may charge a flat fee or percentage for processing documents.
  • Amendment Fee: If LC terms change (e.g., extended deadline), banks charge a fee.

Factors affecting cost: Transaction complexity, country risk (e.g., unstable economies), and the buyer/seller’s creditworthiness.

Usage in International Trade#

LCs are essential for:

  • Mitigating Trust Gaps: Buyers and sellers (often unknown to each other) rely on banks to ensure payment/delivery.
  • Reducing Country Risk: In volatile economies, LCs protect against currency devaluation or government restrictions.
  • Financing: Sellers use LCs as collateral for pre-shipment loans (e.g., to produce goods); buyers defer payment until documents are verified.
  • Regulatory Compliance: Some industries (e.g., government contracts) require LCs for transparency.

Benefits and Risks of Letters of Credit#

Benefits#

  • For Sellers: Guaranteed payment (if documents are compliant), reduced non-payment risk, and access to financing.
  • For Buyers: Ensures goods are shipped as agreed (documents prove compliance) and defers payment until verification.
  • For Banks: Earn fees, strengthen client relationships, and manage risk via collateral checks.

Risks#

  • Documentary Discrepancies: Minor errors (e.g., a typo in an invoice) can delay/reject payment (banks follow “strict compliance” rules).
  • Fraud: Sellers may submit fake documents; buyers may manipulate LC terms.
  • Bank Risk: Issuing/confirming banks may face financial issues, delaying payment.
  • Cost/Complexity: Fees and document preparation can burden small businesses.

Conclusion#

Letters of credit are the backbone of international trade, balancing security and efficiency for buyers, sellers, and banks. By understanding their types, process, and costs, businesses can leverage LCs to expand globally with reduced risk. While risks (e.g., documentary errors) exist, careful document preparation and due diligence minimize them.

Reference#

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2026-05