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Letter of Credit Shipping Basics: How L/C Payment Terms Work

By ANKPOST Research · 2026-06-19

What is a letter of credit in shipping?

A letter of credit (L/C) is a payment guarantee issued by the buyer's bank to the seller, promising payment once the seller presents a specified set of shipping and trade documents proving the goods were shipped as agreed — typically a bill of lading, commercial invoice, packing list, and certificate of origin, among others depending on the deal. The mechanism exists to reduce payment risk on both sides of an international transaction: the seller is protected from non-payment because the bank, not the buyer, guarantees the funds, and the buyer is protected from paying for goods that were never actually shipped, since payment only releases against compliant shipping documents. Because document compliance is the trigger for payment, even minor discrepancies — a misspelled company name, a bill of lading date that doesn't match the L/C's shipment deadline, an incorrect HS code — can cause the bank to reject the documents and delay or deny payment, which is why L/C document preparation is typically handled by an experienced trade finance or freight forwarding team rather than informally.

In this article

Cost structure / standard tiers

Fee Type Typical Range Charged To
L/C issuance fee 0.25%-1.5% of L/C value Buyer/applicant
L/C confirmation fee (if confirmed by a second bank) 0.5%-2% of L/C value Seller/beneficiary, depending on terms
Document examination/negotiation fee $50-$300 flat fee Seller's bank, deducted from proceeds
Amendment fee (if L/C terms change) $50-$150 per amendment Whichever party requests the change

Confirmed letters of credit, which add a second bank's payment guarantee on top of the issuing bank's, cost more but are commonly required when the seller doesn't have confidence in the issuing bank's country risk or financial stability.

Risk mitigation / operational guidance

Review the L/C's required document list against your actual shipping process before the vessel sails, not after — common failure points include certificates of origin that take longer to obtain than the L/C's shipment deadline allows, or a named carrier/vessel requirement that doesn't match the booking. Build in a buffer between your planned shipment date and the L/C's latest shipment date, since port congestion or vessel rollovers (common in tight capacity environments) can push actual loading past the deadline and invalidate the L/C. If discrepancies are unavoidable, contact the buyer in advance to request a waiver or amendment before document presentation — banks will reject discrepant documents by default, and a buyer's advance waiver is far faster to obtain than negotiating after a rejection has already delayed payment.

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