A letter of credit in shipping is a bank-issued payment guarantee: the buyer’s bank commits to pay the seller a fixed amount once the seller presents documents proving the goods were shipped on the agreed terms. It shifts the risk of non-payment from the seller to a bank, and the risk of non-shipment from the buyer to that same bank, which is why it remains the default payment method when trading partners in different countries don’t know each other well enough to trust an invoice.
How the Transaction Moves From Contract to Payment
The buyer and seller first agree in their sales contract that payment will run through a letter of credit, and they spell out the price, the goods, the shipping deadline, and the documents that will trigger payment. The buyer then applies at their own bank. If the bank approves the buyer’s credit, it issues the letter and transmits it to a bank in the seller’s country.
Once the seller sees that the credit is in place and matches what was negotiated, they ship the goods and assemble the required documents. They hand the package to their local bank, which forwards it to the issuing bank. If the documents match the credit terms, the issuing bank pays. Under a sight letter of credit, payment usually reaches the seller within five to seven business days after the bank receives compliant documents.1Export-Import Bank of the United States. Faster Payments and Letters of Credit
The buyer then reimburses the issuing bank. If the buyer can’t pay, the bank still holds the original bill of lading and therefore title to the goods, which it can sell to recover its money. That collateral is why banks are willing to stand behind the transaction in the first place.
Who the Parties Are
A shipping letter of credit involves at least four parties, sometimes five.
- The applicant is the buyer, who applies for the credit, pays the bank’s fees, and reimburses the issuing bank after payment goes out.
- The beneficiary is the seller, who gets paid on presentation of compliant documents.
- The issuing bank is the buyer’s bank, which creates the credit and carries the legal obligation to pay.
- The advising bank sits in the seller’s country, authenticates the credit, and notifies the seller. It does not itself guarantee payment.
- The confirming bank, when used, adds its own independent payment guarantee on top of the issuing bank’s. The seller then has two banks obligated to pay.
Confirmation matters most when the issuing bank is in a country with political or economic instability. It costs more, but on high-risk trade routes it is often the difference between a workable deal and no deal at all.
Types You’ll Choose Between
Under UCP 600, every letter of credit is irrevocable by default, even if the document doesn’t say so. The issuing bank can’t cancel or change the terms without the seller’s agreement. Revocable credits, which let the issuing bank pull out unilaterally, are no longer recognized under current international rules.2United States Council for International Business. Uniform Customs and Practice for Documentary Credits
The bigger negotiation is timing. A sight letter of credit pays as soon as the bank confirms documents comply. A deferred payment or usance credit sets a future payment date, commonly 30, 60, or 90 days after the bill of lading date. Buyers push for deferred payment because it lets them receive and often resell the goods before the bank debits their account. Sellers push for sight because they’d rather have the cash. Whichever wins directly affects how much working capital each side ties up.
A revolving letter of credit automatically renews after each shipment up to a set limit and time period, which is useful when the same buyer and seller ship repeatedly and don’t want to pay issuance fees every round. A standby letter of credit is a different animal: it’s a backup guarantee that only pays out if the buyer fails to pay through the normal channel. In shipping, standby credits often sit behind long-term supply contracts where invoices are usually settled directly.
The Documents That Get You Paid
The document list in the credit is not a suggestion. If the credit calls for seven documents and the seller submits six perfect ones, the bank rejects the presentation.
Bill of Lading
The bill of lading is the anchor document. It proves the carrier received the goods and, as a document of title, gives whoever holds the original a legal claim to the cargo. Banks insist on originals for exactly that reason: if the buyer defaults, the bank takes the goods.
Commercial Invoice and Packing List
The commercial invoice has to describe the goods in the same language the letter of credit uses. A gap as small as “100% cotton t-shirts” on the credit versus “cotton t-shirts” on the invoice can trigger a rejection. The packing list details the contents of every container, crate, or pallet with weights and dimensions, and banks will cross-check it against the invoice and the bill of lading for internal consistency.
Insurance Certificate
When the credit calls for insurance, the certificate must cover at least the value specified in the credit and take effect no later than the shipment date. Which side supplies it depends on the trade terms. Under CIF (Cost, Insurance, and Freight), the seller arranges and pays for coverage. Under FOB (Free on Board), insurance is the buyer’s responsibility and usually isn’t a required document under the credit. Incoterms 2020 also distinguishes CIF from CIP (Carriage and Insurance Paid To), with CIP requiring a higher default level of coverage.3International Chamber of Commerce. Incoterms 2020
Certificate of Origin
Many credits require a certificate of origin so that customs in the importing country can set tariff rates and apply any preferential trade agreements. A chamber of commerce or customs authority in the exporting country usually issues it, and the stated origin has to line up with any origin references elsewhere in the credit and other documents. If the credit names a specific issuer, only that issuer’s certificate satisfies the requirement.
Inspection Certificate
For high-value or technical goods, the credit often calls for a pre-shipment inspection certificate from a named third-party inspector who verifies quality, quantity, and packing before the goods leave the factory. The wording on the certificate must match the inspection clause in the credit exactly, and this is one of the more common places discrepancies come from, because the inspector and the drafter of the credit may describe the same thing differently.
The Deadlines That Actually Matter
Two clocks run against the seller. The first belongs to the bank. Under UCP 600 Article 14(b), the issuing bank has a maximum of five banking days after receiving the documents to decide whether they comply.4ICC Academy. Documentary Credits – Rules, Guidelines and Terminology During those five days the bank checks for strict compliance: every figure, every description, and every date on the documents has to match the credit. The bank does not verify whether the goods themselves are good or whether the buyer is happy. Paper against paper, nothing else.
The second clock runs against the seller directly. If the credit doesn’t set its own presentation period, UCP 600 Article 14(c) sets a default of 21 calendar days after the shipment date to get documents to the bank. Miss that window and it doesn’t matter how clean the paperwork is. Experienced exporters build buffer time into their logistics for exactly that reason.
Common Discrepancies and How to Avoid Them
Document discrepancies are the single most common cause of payment delays. Data from the ICC Banking Commission points to transport documents, commercial invoices, and insurance documents as the biggest sources.
- Late shipment. Goods loaded after the deadline in the credit. Fixing this requires either a waiver from the buyer or a formal amendment.
- Description mismatch. Invoice wording doesn’t mirror the credit. Abbreviations and rephrasings both count as discrepancies.
- Missing or incorrect endorsement. The bill of lading requires an endorsement transferring title, and it was left blank or signed wrong.
- Insurance gaps. Coverage amount is too low, effective date is after shipment, or the beneficiary named on the policy is wrong.
- Expired presentation. Documents arrived after the credit’s expiry or after the 21-day window.
When the bank flags a discrepancy, the seller can correct and resubmit if time allows, ask the buyer to instruct the issuing bank to accept the documents anyway, or request a formal amendment to the credit. All three cost time and money. The cheapest fix is prevention: have someone who reads letters of credit for a living review every document before it goes to the bank. Freight forwarders and trade finance consultants often provide this, and the fee is usually smaller than a single discrepancy charge.
What It Costs
Letters of credit are not cheap. The issuing bank charges an issuance fee calculated as a percentage of the credit amount; roughly 0.75% is a common reference point.5International Trade Administration. Methods of Payment – Letter of Credit On a $500,000 shipment, that’s about $3,750 just to open the credit.
On top of that, expect charges for amendments, discrepancy handling, confirmation if the seller wants it, and courier fees for paper documents moving between banks. Any change to the credit after issuance triggers an amendment fee, running from a few hundred dollars to over a thousand depending on the bank. Discrepancy fees pile on when documents come in flawed. The sales contract should say upfront who pays which fees, because leaving it unsettled invites a dispute that stalls the whole transaction.
Sanctions and Fraud: Two Risks the Documents Don’t Cover
Every bank in the chain is required to screen the parties, goods, and shipping routes against sanctions lists. In the United States, the Office of Foreign Assets Control prohibits financial institutions from processing transactions involving sanctioned individuals, entities, or countries unless specifically authorized.6U.S. Department of the Treasury. OFAC Consolidated Frequently Asked Questions A bank that finds a hit will freeze the transaction and block the funds regardless of how clean the paperwork looks.
Non-U.S. parties are exposed as well. OFAC rules reach anyone who causes a U.S. person to violate sanctions or who tries to evade them, and a payment denominated in U.S. dollars clears through U.S. correspondent banks, which brings the whole transaction inside OFAC jurisdiction. Sellers routing shipments to or through high-risk regions should verify counterparties and trade routes before the credit is even opened.
Fraud is the other risk that documents can’t police. The independence principle in letter of credit law ties the bank’s duty to pay entirely to the documents, not to the underlying goods. A seller who presents forged documents that appear compliant can collect payment before the fraud is discovered. Courts can enjoin payment, but the threshold is high: the party seeking the injunction has to show a strong case of actual fraud, not just suspicion. For buyers, that reinforces why inspection certificates and known trading partners matter so much.
UCP 600 and Electronic Presentation
Almost every shipping letter of credit worldwide runs under the Uniform Customs and Practice for Documentary Credits, published by the International Chamber of Commerce as UCP 600 and in effect since July 1, 2007.2United States Council for International Business. Uniform Customs and Practice for Documentary Credits The core principle is that the bank’s obligation to pay is independent of the sales contract. If the buyer discovers the goods are defective after the bank has already paid, the buyer’s remedy is against the seller, not the bank. That separation is exactly what makes the letter of credit reliable for the seller.
Incoterms, also from the ICC, sit alongside UCP 600 by defining which party handles shipping, insurance, and risk transfer at each stage. Get the Incoterms wrong in the sales contract and the wrong documents end up required under the credit, which is one of the subtler sources of discrepancies because the mistake starts in the contract rather than the paperwork.3International Chamber of Commerce. Incoterms 2020
The ICC also publishes the eUCP, a supplement to UCP 600 that allows electronic presentation. The current version is eUCP 2.1.7International Chamber of Commerce. eUCP Version 2.1 – ICC Uniform Customs and Practice for Documentary Credits For a credit to allow electronic records, it must explicitly state that it’s subject to the eUCP and specify the physical location of the issuing bank and any other banks involved. An electronic bill of lading qualifies as an electronic transferable record carrying the same information as the paper version.8International Chamber of Commerce. ICC Uniform Customs and Practice for Documentary Credits for Electronic Presentation Where the eUCP and UCP 600 differ on a point, the eUCP controls. Adoption is still uneven, though, and some banks lack the systems to examine electronic records. Before agreeing to an eUCP credit, both sides should confirm every bank in the chain can actually handle the format, because a seller who presents electronic documents to a bank that can’t read them is in the same position as one who presented nothing.