TRW & Co — Holborn Gate, 330 High Holborn, London WC1V 7QH. This note explains the documentary and legal architecture of letters of credit (LCs) in international trade, and sets out practical steps and a checklist for corporates and their advisers arranging LCs through UK banks. It is written with England & Wales law and practice in mind and is intended as a general procedural guide for international transactions.

Overview: what an LC achieves

A letter of credit is a bank undertaking to pay the seller (beneficiary) on presentation of stipulated documents that comply strictly with the credit’s terms. LCs allocate payment risk from buyer to an issuing bank and, where confirmed, to a confirming bank. Documentary credits are typically governed by the terms of the credit and by the ICC’s Uniform Customs and Practice for Documentary Credits (UCP 600), rather than the law of the underlying sale contract, although choice of law and courts for underlying disputes remain important commercial considerations.

How an LC works: key steps

1. Contract and pro‑forma invoice: buyer and seller conclude a sales contract and seller issues a pro‑forma invoice or indent describing goods, price, shipment terms and required documents.
2. Application to bank: the buyer applies to its bank (the issuing bank) to open an LC in favour of the seller, providing commercial documents and corporate authority documentation.
3. Issuance and notification: the issuing bank issues the LC, usually via SWIFT, and the advising bank (often the seller’s bank) notifies the beneficiary.
4. Shipment and presentation: seller ships goods, arranges required documents (bill of lading/air waybill, commercial invoice, packing list, insurance certificate, certificates of origin etc.) and presents them to the negotiating/presenting bank within the LC’s expiry date.
5. Document examination and payment: banks examine documents strictly against the LC. If documents comply, the bank pays (sight) or accepts a usance draft. Discrepancies may be waived, corrected or may lead to refusal to pay.
6. Reimbursement and recovery: the issuing bank reimburses the paying bank and seeks reimbursement from the applicant under the terms of the LC and the underlying contractual arrangements.

Practical checklist

• Confirm which version of UCP (typically UCP 600) applies and whether the credit is confirmed.
• Match the LC terms precisely to the sale contract and pro‑forma invoice: goods description, quantity, price, Incoterms, shipment and expiry dates.
• Assemble company documentation required by the issuing bank: corporate ID, incorporation documents, board resolution/authority, AML/KYC information and account mandates.
• Identify the full set of required documents and the exact wording each document must contain.
• Allow margin for transit delays and bank processing times; set presentation and expiry dates conservatively.
• Consider confirmation/guarantee if the beneficiary requires an additional bank undertaking.
• Review insurance cover, export/import licences and any applicable sanctions or trade restrictions.

Common pitfalls and risk allocation

The most frequent cause of non‑payment is documentary discrepancy. The documentary nature of LCs means that even where goods are shipped correctly, banks may refuse payment for imperfect documents. Ensure harmonisation between commercial and documentary requirements and confirm whether the LC permits partial shipments or transhipment. Consider credit and political risk mitigants such as confirming banks, standby letters of credit or trade credit insurance from UK Export Finance or private insurers.

Jurisdiction and sources

• ICC — UCP 600: Uniform Customs and Practice for Documentary Credits
• UK Export Finance
• Bank of England
• GOV.UK — importing and exporting guidance

If your transaction involves jurisdictions outside England & Wales, or requires regulatory approvals, seek specialist cross‑border trade and banking advice at the outset. For matters involving Scotland or Northern Ireland, be aware of procedural and regulatory distinctions under local law.

General information only; not legal advice and not a substitute for advice on a particular matter.