【Trade Finance】How a Letter of Credit Works in Commodity Trading
Quote from chief_editor on April 11, 2026, 9:00 pmHow letter of credit works commodity trading explained: understand LC roles, payment flow, and document requirements for physical trade beginners.
A Letter of Credit (LC) is a payment instrument issued by a bank that guarantees a seller will receive payment, provided the seller presents a specific set of documents that comply with the terms of the LC. In commodity trading, the LC is one of the most widely used tools for managing counterparty risk between buyers and sellers who may have no prior relationship and are operating across different jurisdictions.
How the LC Payment Process Works in Physical Commodity Trade
The LC process involves four primary parties. First, the applicant — the buyer — requests their bank, known as the issuing bank, to open an LC in favor of the seller. Second, the issuing bank sends the LC to a bank in the seller's country, called the advising bank, which notifies the seller — the beneficiary — that the LC is in place. Third, the seller ships the goods and assembles the required documents: typically a bill of lading, commercial invoice, packing list, certificate of origin, and inspection certificate. Fourth, the seller presents these documents to the advising bank, which forwards them to the issuing bank. Once the issuing bank confirms the documents are compliant, payment is released to the seller.
The reason the LC is so central to commodity trade is that payment is tied entirely to documents, not to the physical condition of the goods at arrival. If the documents match the LC terms precisely, the bank is obligated to pay — regardless of whether the buyer is satisfied with the cargo.
In a typical transaction, assume a copper concentrate buyer in China opens an LC for USD 2 million in favor of a Chilean mining exporter. The LC specifies that the seller must present a clean on-board bill of lading, a quality certificate from an approved inspection agency such as SGS or Intertek, and a commercial invoice within 21 days of shipment. If the seller presents all documents correctly, the issuing bank pays — even if the buyer later disputes the quality. The buyer's recourse is then a separate legal matter, not a banking matter.
What Happens When Documents Don't Match
The most common source of delay and dispute in LC transactions is a discrepancy — a mismatch between what the LC requires and what the seller presents. Discrepancies can be minor, such as a typographical error in the vessel name, or more significant, such as a missing endorsement on the bill of lading. When a discrepancy is found, the issuing bank issues a notice and the buyer decides whether to waive the discrepancy or reject the documents.
For commodity traders working as intermediaries, discrepancies are particularly costly because they can delay payment by days or weeks, disrupting cash flow across a chain of back-to-back transactions. This is why experienced traders review LC terms carefully before shipment and often negotiate amendments to the LC before presenting documents.
LCs also come in different types. A sight LC means payment is made immediately upon presentation of compliant documents. A usance LC — also called a term or deferred payment LC — means payment is made at a fixed number of days after presentation, for example 90 days after the bill of lading date. Usance LCs effectively provide the buyer with a short-term credit period, which is a common structure in grain and metals trade.
A confirmed LC adds an additional layer of protection: the advising bank in the seller's country also commits to pay, so the seller is not exposed to the risk of the issuing bank defaulting. This structure is common when the issuing bank is located in a country with higher sovereign risk.
The LC does not eliminate all risk. It shifts and contains specific risks — non-payment by the buyer, and to some extent country risk — but it does not protect against fraud, where documents are falsified to obtain payment for goods that do not exist or do not match specifications.
A Letter of Credit functions as a conditional bank guarantee: once the seller fulfills the documentary requirements, the obligation to pay transfers from the buyer to the bank, making the LC the most reliable standard payment instrument available in cross-border physical commodity trade.
Keywords: how letter of credit works commodity trading | LC payment process, documentary credit, issuing bank, beneficiary commodity trade, trade finance instruments
Words: 652 | Source: Industry knowledge — WorldTradePro editorial research | Created: 2026-04-09
How letter of credit works commodity trading explained: understand LC roles, payment flow, and document requirements for physical trade beginners.
A Letter of Credit (LC) is a payment instrument issued by a bank that guarantees a seller will receive payment, provided the seller presents a specific set of documents that comply with the terms of the LC. In commodity trading, the LC is one of the most widely used tools for managing counterparty risk between buyers and sellers who may have no prior relationship and are operating across different jurisdictions.
How the LC Payment Process Works in Physical Commodity Trade
The LC process involves four primary parties. First, the applicant — the buyer — requests their bank, known as the issuing bank, to open an LC in favor of the seller. Second, the issuing bank sends the LC to a bank in the seller's country, called the advising bank, which notifies the seller — the beneficiary — that the LC is in place. Third, the seller ships the goods and assembles the required documents: typically a bill of lading, commercial invoice, packing list, certificate of origin, and inspection certificate. Fourth, the seller presents these documents to the advising bank, which forwards them to the issuing bank. Once the issuing bank confirms the documents are compliant, payment is released to the seller.
The reason the LC is so central to commodity trade is that payment is tied entirely to documents, not to the physical condition of the goods at arrival. If the documents match the LC terms precisely, the bank is obligated to pay — regardless of whether the buyer is satisfied with the cargo.
In a typical transaction, assume a copper concentrate buyer in China opens an LC for USD 2 million in favor of a Chilean mining exporter. The LC specifies that the seller must present a clean on-board bill of lading, a quality certificate from an approved inspection agency such as SGS or Intertek, and a commercial invoice within 21 days of shipment. If the seller presents all documents correctly, the issuing bank pays — even if the buyer later disputes the quality. The buyer's recourse is then a separate legal matter, not a banking matter.
What Happens When Documents Don't Match
The most common source of delay and dispute in LC transactions is a discrepancy — a mismatch between what the LC requires and what the seller presents. Discrepancies can be minor, such as a typographical error in the vessel name, or more significant, such as a missing endorsement on the bill of lading. When a discrepancy is found, the issuing bank issues a notice and the buyer decides whether to waive the discrepancy or reject the documents.
For commodity traders working as intermediaries, discrepancies are particularly costly because they can delay payment by days or weeks, disrupting cash flow across a chain of back-to-back transactions. This is why experienced traders review LC terms carefully before shipment and often negotiate amendments to the LC before presenting documents.
LCs also come in different types. A sight LC means payment is made immediately upon presentation of compliant documents. A usance LC — also called a term or deferred payment LC — means payment is made at a fixed number of days after presentation, for example 90 days after the bill of lading date. Usance LCs effectively provide the buyer with a short-term credit period, which is a common structure in grain and metals trade.
A confirmed LC adds an additional layer of protection: the advising bank in the seller's country also commits to pay, so the seller is not exposed to the risk of the issuing bank defaulting. This structure is common when the issuing bank is located in a country with higher sovereign risk.
The LC does not eliminate all risk. It shifts and contains specific risks — non-payment by the buyer, and to some extent country risk — but it does not protect against fraud, where documents are falsified to obtain payment for goods that do not exist or do not match specifications.
A Letter of Credit functions as a conditional bank guarantee: once the seller fulfills the documentary requirements, the obligation to pay transfers from the buyer to the bank, making the LC the most reliable standard payment instrument available in cross-border physical commodity trade.
Keywords: how letter of credit works commodity trading | LC payment process, documentary credit, issuing bank, beneficiary commodity trade, trade finance instruments
Words: 652 | Source: Industry knowledge — WorldTradePro editorial research | Created: 2026-04-09