UCP 600, in full: the rulebook behind every letter of credit

Almost every serious cross-border commodity payment runs on a rulebook that most buyers have never read. When a contract says payment will be made under a letter of credit, the letters UCP 600 are doing quiet, enormous work in the background. They are what turn a bank's payment promise into a precise, enforceable, globally understood obligation. This is a full walk-through of UCP 600: what it is, how a letter of credit works under it, the specific rules that decide real deals, from the documents to transferable credits to the bank's disclaimers, and why the whole framework protects both sides.

UCP 600 stands for the Uniform Customs and Practice for Documentary Credits, 2007 revision, ICC publication number 600. It is written by the International Chamber of Commerce, and it is not a law. No parliament passed it. It works because each letter of credit states that it is issued subject to UCP 600, and that single line pulls all 39 of its articles into the contract between the banks and the beneficiary. Two companion texts sit beside it: the ISBP, the International Standard Banking Practice, which tells banks how to examine documents in practice, and the eUCP, which extends the rules to electronic presentations.

1. 01

   Autonomy of the credit

   The letter of credit is a separate contract from the sale it pays for. Banks are bound by the credit, not by the underlying deal, so a dispute over the sugar does not, on its own, stop or change the bank's obligation to pay. This is what lets a seller rely on the credit even when it has never met the buyer.

2. 02

   Documents, not goods

   Banks deal in documents, not in goods, services or performance. The bank that pays never sees or inspects the sugar. It examines the paper the credit calls for and pays against paper that conforms. Verifying the actual cargo is the job of an independent inspection at loading, not the bank.

3. 03

   Strict compliance

   The documents must comply, on their face, with the terms of the credit. A complying presentation must be honoured. A discrepant one need not be. That strictness is not pedantry. It is the mechanism that lets a bank pay with confidence and refuse with a clear rule, instead of judging the merits of a trade it never saw.

• The applicant: the buyer, who asks its bank to issue the credit.
• The beneficiary: the seller, in whose favour the credit is issued and who is paid on a complying presentation.
• The issuing bank: the buyer's bank, which issues the credit and carries the primary obligation to pay.
• The advising bank: a bank in the seller's country that authenticates the credit and passes it on.
• The confirming bank: a bank that adds its own independent undertaking to pay, so the seller relies on a local, trusted bank rather than a distant one. Confirmation is what a seller asks for when the issuing bank or its country carries risk.
• The nominated bank: the bank authorised to accept the documents and to pay, negotiate or incur a deferred payment undertaking.

1. 01

   The contract sets the credit

   The sale and purchase agreement fixes payment by letter of credit, and both sides agree the documents, dates and terms the credit will carry.

2. 02

   The buyer instructs its bank

   The buyer applies to its bank, the issuing bank, to issue the credit in the seller's favour.

3. 03

   The credit is transmitted

   The issuing bank sends the credit, usually by a SWIFT MT700 message, to a bank in the seller's country, which advises it and, if asked, confirms it.

4. 04

   The seller ships and gathers documents

   The seller ships and assembles the document set the credit requires: bill of lading, commercial invoice, packing list, certificate of origin, certificate of quality and quantity, insurance certificate, phytosanitary certificate and any others named.

5. 05

   The documents are presented

   The seller presents the documents to the nominated or confirming bank, within the presentation period and before the credit expires.

6. 06

   The bank examines and honours

   The bank examines the documents against the credit and, if they comply, honours the payment, then forwards the documents to the issuing bank for reimbursement.

7. 07

   The buyer takes delivery

   The buyer receives the documents from its bank and uses them to take delivery of the cargo.

Two articles carry most of the practical weight. Under Article 14, a bank has a maximum of five banking days following the day of presentation to decide whether the documents comply. It cannot sit on them indefinitely. Under Article 16, if it decides to refuse, it must send a single notice stating every discrepancy it is relying on, so the beneficiary knows exactly what is wrong. The discrepancies that stop payment are almost always documentary rather than commercial: shipment later than the credit allows, presentation after the deadline (the default is 21 calendar days after the shipment date for transport documents, and never after expiry), a goods description that does not match, data that is inconsistent between documents, or a required document simply missing. The lesson for a seller is blunt. A credit you cannot comply with is a credit that will not pay, so the terms have to be checked against reality before the cargo moves.

A credit has to say where and how it can be used. Article 6 requires every credit to state the bank with which it is available and whether it is available by payment, deferred payment, acceptance or negotiation, along with an expiry date and a place for presentation. Present after the expiry, or at the wrong place, and the credit does not pay. There is a little give in the timing. Under Article 29, if the expiry date or the last day for presentation falls on a day the bank is closed for reasons other than force majeure, it rolls to the next banking day. On quantity and value, Article 30 gives useful room: the words about or approximately allow a ten per cent tolerance, and even where they are absent, a five per cent tolerance in quantity is allowed when the credit does not state the quantity in packing units or individual items and the total credit amount is not exceeded.

Most of UCP 600 is about documents, because that is what banks examine, and a handful of rules cause most refusals. Article 17 requires at least one original of each document and sets out when a copy will do. Article 18 says the commercial invoice must be issued by the beneficiary, made out to the applicant, drawn in the currency of the credit, and describe the goods exactly as the credit does, with no room for a looser description. Articles 19 to 27 govern transport documents. For a bill of lading the bank checks that it names a carrier and is signed correctly, shows the goods loaded on board, covers the port-to-port voyage the credit requires, and is clean, meaning it bears no clause declaring the goods or packaging defective. Article 28 handles the insurance document: it must be in the currency of the credit, cover at least the value the credit requires (commonly 110 per cent of the invoice value), and be effective from no later than the date of shipment. A presentation is judged on whether these documents are consistent with each other and with the credit, not on whether the underlying goods are good.

A letter of credit under UCP 600 is irrevocable, so it cannot be changed at will. Article 10 says an amendment needs the agreement of the issuing bank, any confirming bank and the beneficiary, and the beneficiary is free to accept or reject it. Partial acceptance is not allowed: an amendment is taken whole or not at all. On shipments, Article 31 allows partial shipments unless the credit prohibits them. Article 32 governs instalments: if the credit calls for shipment in defined instalments and one instalment is not shipped in its period, the credit stops being available for that instalment and for any that follow, which is why an instalment schedule has to be realistic. A revolving credit, which is not a single UCP article but a way a credit can be structured, reinstates its amount as it is used, so that a monthly supply contract does not need a fresh credit for every shipment. These are the mechanics behind the words transferable, divisible and revolving that appear on so many corporate offers.

These two are constantly confused, and the difference matters to anyone working through an intermediary. Under Article 38, a credit is transferable only if it is expressly marked transferable, and it can then be transferred, once, in whole or in part, to one or more second beneficiaries. This is how a middle party who is the first beneficiary can pass the credit to the actual supplier while substituting its own invoice and drawing the difference as its margin. Article 39 is a different thing. The assignment of proceeds lets the beneficiary assign the money it is entitled to receive, but it does not transfer the right to perform under the credit or to present documents. In short, transferring a credit passes the right to draw on it, while assigning proceeds passes only the money. When an offer says the instrument must be transferable, assignable and divisible, it is asking for a credit that can be split and moved down a disclosed chain, which is exactly the machinery an honest intermediary uses to get paid without inflating the buyer's price.

The last group of articles marks the limits of the banks' role, and reading them explains why the rest of the trade structure exists. Article 34 says a bank assumes no responsibility for the form, sufficiency, genuineness or legal effect of any document, nor for the goods the documents describe. Article 35 disclaims liability for messages lost or garbled in transmission or for errors in translation. Article 36 covers force majeure: a bank is not liable when its business is interrupted by events beyond its control, and a credit that expires during such an interruption is not extended. Article 37 says a bank that uses another bank to carry out instructions does so for the applicant's account and risk. The thread through all of them is the same. The bank guarantees payment against complying documents, and nothing more. It does not guarantee the sugar, the ship or the honesty of the parties. That is precisely why inspection at loading, disclosed principals and a performance bond sit alongside the credit, each covering a risk the credit was never meant to cover.

Because these instruments travel over SWIFT, their message numbers get used as shorthand, and the shorthand is often wrong. Three are worth separating clearly. An MT700 issues a documentary letter of credit, the commercial credit that pays against complying documents, and it is governed by UCP 600. An MT760 issues a guarantee or a standby letter of credit, which is a backstop that pays only if the other side defaults; standbys are commonly governed not by UCP 600 but by ISP98, a separate ICC rulebook written for them. An MT103 is not a credit at all. It is the message that actually moves the money, the customer transfer that settles the payment. A documentary credit and a standby are different tools for different jobs, and naming the wrong one, or citing the wrong rulebook, is a quick way to signal that a counterparty has not done this before.

For the buyer, the credit means money leaves the bank only against documents that prove the goods were shipped, inspected and insured exactly as the contract required, and only after a bank has examined them under a rulebook applied the same way in every market. For the seller, it means a bank's own independent promise to pay on a complying presentation, a promise that does not depend on the buyer's goodwill or on the state of the underlying dispute. Neither side is asked to trust the other. Both rely on the same neutral rules and the same banks.