Letters of Credit deep dive
Current Section
Introduction
Letters of Credit deep dive
Understanding how LCs secure payment and trust in global trade
A Letter of Credit (LC) is a financial instrument issued by a bank on behalf of a buyer that guarantees payment to a seller once agreed documents are presented in compliance with LC terms. It substitutes the creditworthiness of the buyer with that of the issuing bank, reducing payment risk and enabling trust between counterparties across borders. LCs remain a cornerstone of structured trade finance and are governed by international rules ensuring consistency and transparency.
Key Benefits
- Payment security for exporters
- Risk mitigation for importers
- Standardised documentation
- Global legal recognition
- Credibility for new trade relationships
- Credibility for new trade relationships
•Market Statistics
Global annual volume
$2.8T
Default rate
0.1%
Processing time
3–5 business days
Governing rules
UCP 600, ISBP
Digital trends
eUCP and MLETR adoption
How Letters of Credit work
LCs involve a buyer (applicant), seller (beneficiary), issuing bank, and advising or confirming bank. Once goods are shipped, the seller presents compliant documents to the bank, which examines them under UCP 600. If compliant, the bank pays or commits to pay as agreed. This document-based system provides assurance to both parties that payment will be made only when contractual terms are met.
•Process Flow
Application Buyer requests LC issuance from their bank.
Issuance Bank issues the LC and sends it to the seller’s bank.
Shipment Seller ships goods and prepares documents.
Presentation Seller presents documents for examination.
Examination Bank checks documents under UCP 600.
Payment Upon compliance, payment or acceptance is made.
Common use cases & applications
1
International trade
Used across cross-border transactions where buyers and sellers may be unfamiliar with each other’s credit standing or legal systems.
Commodities
Manufacturing goods
Consumer products
2
Project contracts
Used to secure milestone or performance-related payments within complex project finance structures.
Construction projects
Energy developments
Mining operations
3
Government contracts
Used for public procurement and tenders requiring payment assurance or performance guarantees.
Defence contracts
Public infrastructure
Equipment procurement
4
Emerging markets
Used to mitigate sovereign and counterparty risk where credit information is limited.
Frontier markets
Trade corridors
SME exporters
Governing rules & regulations
UCP 600
Uniform Customs and Practice for Documentary Credits, governing issuance, examination, and payment.
ICC
ISBP
International Standard Banking Practice providing guidance on document examination and compliance.
ICC
Local Banking Regulations
National compliance requirements for AML, KYC, and sanctions screening.
Regulatory
eUCP / MLETR
Digital frameworks allowing electronic documents and negotiable instruments.
Digital
Key regulatory frameworks
1
International Chamber of Commerce (ICC):
Develops and maintains the Uniform Customs and Practice for Documentary Credits (UCP 600) and related standards such as ISBP and eUCP, providing globally accepted rules for LC operations.
2
International Standard Banking Practice (ISBP):
Develops and maintains the Uniform Customs and Practice for Documentary Credits (UCP 600) and related standards such as ISBP and eUCP, providing globally accepted rules for LC operations.
3
eUCP and MLETR frameworks:
Support the digital presentation of documents and legal recognition of electronic transferable records, enabling paperless LC workflows and interoperability.
4
Local Banking and Regulatory Requirements:
National regulations establish additional compliance obligations for banks, including Anti-Money Laundering (AML), Know Your Customer (KYC), and sanctions screening for cross-border LC transactions.
Worked example: Automotive component export
Scenario: An exporter in Asia ships components worth €2.5 million to a European buyer under a confirmed irrevocable LC. The seller presents compliant documents, including invoice, bill of lading, and certificate of origin, within the 21-day presentation period. The confirming bank verifies compliance and pays at sight. The buyer repays the issuing bank at maturity.
•Transaction Details
Value:
€2,500,000LC type:
Confirmed irrevocablePayment:
At sightPresentation period:
21 daysDiscrepancies
Required Documents
1
Commercial invoice2
Bill of Lading or Air Waybill3
Packing List4
Certificate of Origin5
Insurance Certificate (if applicable)Outcome & benefits
The transaction was completed successfully with all documents presented within the 21-day presentation period. The Chinese supplier received payment guarantee from Deutsche Bank (confirming bank), while BMW Group secured quality assurance through the LC terms.
100%
Document Compliance
15
Days to Payment
0
Discrepancies
Frequently Asked Questions
What is a Letter of Credit and how does it work?
A Letter of Credit (LC) is a payment instrument issued by a bank on behalf of a buyer that guarantees payment to a seller upon presentation of compliant documents. It substitutes the credit risk of the buyer with that of the issuing bank. Once the seller ships goods and submits the required documents, the bank examines them under the Uniform Customs and Practice for Documentary Credits (UCP 600). If they comply, the bank pays or commits to pay according to the LC terms. This mechanism reduces counterparty risk and ensures payment certainty in cross-border trade.
What are the different types of Letters of Credit?
Common structures include sight LCs, which pay immediately upon document presentation, and usance or deferred LCs, which pay at a future date. Confirmed LCs add a second bank’s guarantee, usually in the seller’s country, providing additional security. Standby LCs act as a financial guarantee rather than a primary payment method. There are also transferable, back-to-back, and revolving LCs used for complex trade flows or supply arrangements.
How are LCs governed and what rules apply?
The ICC’s UCP 600 is the globally recognised rule set covering issuance, examination, and settlement. The International Standard Banking Practice (ISBP) provides detailed guidance on document examination. Local regulations and anti-money-laundering requirements also apply, and banks must follow know-your-customer and sanctions compliance processes. Together these frameworks ensure consistent interpretation and reduce disputes.
What are the risks and how are discrepancies handled?
Most issues arise from document discrepancies such as mismatched descriptions, missing signatures, or late presentation. Under UCP 600, banks have up to five banking days to examine documents. If discrepancies are found, the issuing bank seeks the buyer’s acceptance; if refused, the documents are returned for correction. Careful drafting and adherence to ISBP standards minimise discrepancy risk.
Can a Letter of Credit be amended after issuance?
Yes, but any amendment, such as extending shipment dates, changing values, or altering documents, must be agreed by all parties: applicant, issuing bank, and beneficiary. Confirming banks, if present, must also consent. Amendments take effect only when acknowledged by the beneficiary.
How long does LC processing take?
Typical issuance occurs within three to five business days once terms are agreed and credit lines confirmed. Document examination and payment generally occur within five banking days of presentation for sight LCs. Deferred payment LCs specify settlement on maturity.
How are LCs used with Incoterms like FCA or CIF?
Under terms such as FCA, where the buyer controls the main carriage, challenges can arise if the seller cannot obtain an on-board bill of lading required by the LC. Contracts should clearly allocate responsibility for transport documents and allow sufficient shipment windows. Many practitioners recommend CPT or CIP for LC transactions to ensure the seller can produce compliant documents and control logistics.
What is the accounting and risk treatment of LCs?
For buyers, an LC is generally an off-balance-sheet commitment until payment, while for sellers, proceeds are recognised once compliant documents are accepted. From a risk perspective, ICC Trade Register data show LCs carry one of the lowest default rates in trade finance, typically below 0.1%, reflecting their secure, document-driven structure.
What are the costs associated with an LC?
Fees vary by bank and complexity but usually include issuance and advising charges, confirmation fees if additional guarantees are added, and amendment or negotiation costs. Overall pricing often ranges between 0.1% and 2% of the LC value.
When is a Letter of Credit most appropriate?
LCs are best suited for international trade where parties lack established trust or operate under differing legal systems. They are widely used in commodities, manufacturing, and project exports where payment security and document precision are essential.
