What Is a Letter of Credit? The Trade Finance Tool That Moves $2 Trillion a Year
A letter of credit is a bank guarantee that enables international trade between parties who have never met and may never meet. Here is exactly how it works and why importers need to understand every clause.
International trade would largely not exist without letters of credit. When a German manufacturer buys cocoa from an Ivory Coast farm, neither party has met the other, neither trusts the other's banking system, and the goods will spend three weeks on a container ship. The letter of credit solves all three problems simultaneously.
What a Letter of Credit Actually Is
A letter of credit (LC) is a written commitment from the importer's bank to pay the exporter a specified amount, provided the exporter presents the documents specified in the LC — typically a bill of lading, commercial invoice, packing list, certificate of origin and insurance certificate — within a stated time frame.
The bank is not paying for the goods. It is paying on presentation of complying documents. The distinction matters: the bank has no obligation to inspect the cargo, verify its quality, or confirm the buyer is satisfied. It checks paper. If the paper matches the LC terms exactly, payment is made.
The Four Parties in an LC Transaction
The applicant (importer) instructs their bank to issue the LC. The issuing bank creates the LC and commits to pay. The advising bank (usually in the exporter's country) authenticates and transmits the LC to the exporter. The beneficiary (exporter) receives payment once complying documents are presented. In many transactions, a fifth party — the confirming bank — adds its own payment guarantee, useful when the importer's country risk is high.
The Critical Clauses That Trap Inexperienced Exporters
The most common cause of LC payment failure is document discrepancy — the exporter's paperwork does not match the LC terms exactly. A typo in the vessel name, a date one day out of the stated window, a misspelling of the buyer's name — all constitute discrepancies that give the issuing bank grounds to refuse payment.
The correction? Review the LC immediately upon receipt, before shipping the goods. Check every single field against what you can actually deliver. If you cannot comply, request an amendment before the goods leave the factory. Once shipped, you have no leverage.
Key Takeaways
- An LC is a bank's payment promise contingent on complying documents — not on the goods themselves
- Review the LC against your capabilities immediately upon receipt; request amendments before shipping
- A confirming bank adds payment security when the issuing country has elevated risk
- Document discrepancies are the primary cause of LC payment delays — precision in paperwork is not optional
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