Introduction
A Documentary Letter of Credit (LC) or Documentary Credit is an important payment and risk-management instrument in domestic and international trade.
In a typical trade transaction, the seller is concerned about receiving payment, while the buyer wants assurance that payment will be made only when the seller provides the documents required under the agreed terms. An LC reduces this gap by introducing a bank's independent undertaking.
Under UCP 600, a credit is an irrevocable arrangement that constitutes a definite undertaking of the issuing bank to honour a complying presentation. UCP 600 is the latest revision of the International Chamber of Commerce's Uniform Customs and Practice for Documentary Credits and has been effective since 1 July 2007.
For CAIIB, LC questions commonly test:
independence of the LC from the underlying contract;
the principle that banks deal with documents;
differences between issuing, advising, confirming and nominated banks;
obligations created by confirmation;
transferable and back-to-back credits;
sight and usance structures; and
incorrect assumptions about the buyer, seller, goods and documents.
Learning Objectives
After studying this topic, you should be able to:
explain the basic principles governing documentary credits;
identify the major parties to an LC transaction;
distinguish their roles, rights and liabilities;
understand when a bank has a definite payment undertaking;
differentiate important types of documentary credits;
apply LC concepts to practical banking situations; and
avoid common CAIIB examination traps.
What Is a Documentary Credit?
A documentary credit is a bank undertaking issued in favour of a beneficiary, normally at the request of a buyer, under which payment is made when the beneficiary presents documents that comply with the credit terms.
The basic parties are normally:
Buyer → ApplicantBuyer's bank → Issuing BankSeller → Beneficiary
Other banks may be involved for advising, confirmation, nomination, negotiation or reimbursement.
Fundamental Principles of Letters of Credit
Understanding the principles is more important than memorising the transaction flow.
1. Principle of Autonomy or Independence
A documentary credit is separate from the sale contract or other underlying contract on which it is based.
Suppose an importer buys machinery from an exporter. The sale contract determines matters such as:
price;
specification;
quantity;
delivery;
warranty; and
quality.
The LC is a separate arrangement involving the bank's undertaking.
Therefore, a commercial dispute between buyer and seller does not automatically cancel the issuing bank's obligation under a complying LC presentation.
UCP 600 Article 4 establishes the separation of the credit from the underlying contract.
2. Banks Deal with Documents, Not Goods
This is one of the most important CAIIB concepts.
UCP 600 Article 5 provides that banks deal with documents, not with the goods, services or performance to which those documents relate.
The bank therefore examines items such as:
commercial invoice;
transport document;
insurance document;
certificate of origin;
inspection certificate; and
other documents required by the credit.
The bank does not physically inspect the goods merely because it has issued the LC.
3. Documentary Compliance
The beneficiary must make a complying presentation.
Banks examine the presented documents against:
the terms and conditions of the credit;
applicable UCP 600 provisions; and
international standard banking practice.
UCP 600 requires the relevant banks to determine compliance on the basis of the documents presented.
A documentary credit therefore gives payment protection only when the beneficiary understands and satisfies the documentary requirements.
4. Irrevocability
Under UCP 600, a credit is irrevocable.
The issuing bank's undertaking cannot simply be withdrawn because the applicant changes its mind. An amendment or cancellation generally requires the agreement of the issuing bank, confirming bank if any, and beneficiary as applicable under UCP 600 Article 10.
This is an important change from older terminology where learners may encounter references to revocable credits.
Major Parties to a Letter of Credit
UCP 600 identifies important participants including the applicant, issuing bank, beneficiary, advising bank, confirming bank and nominated bank.
Applicant
The applicant is the party on whose request the credit is issued. In a commercial import transaction, the applicant is normally the buyer or importer.
The applicant:
requests the bank to issue the LC;
specifies commercial requirements to be incorporated into the credit;
arranges margin or credit facilities as required by the issuing bank;
ultimately bears responsibility towards the issuing bank under their separate banking arrangement; and
receives the benefit of the stipulated documents through the LC process.
The applicant should ensure that the LC conditions reflect the commercial contract and are realistic.
An applicant should not impose conditions requiring documents that the beneficiary cannot reasonably obtain. ICC guidance stresses that LC instructions should be clear and should not contain unnecessary detail.
Issuing Bank
The issuing bank issues the credit at the request of the applicant or on its own behalf.
Its role is fundamental because the LC substitutes or supplements the buyer's payment risk with the bank's undertaking.
Once the credit is issued, the issuing bank has a definite obligation to honour a complying presentation according to the terms of the credit and UCP 600. UCP 600 Article 7 specifically deals with the issuing bank undertaking.
Beneficiary
The beneficiary is the party in whose favour the credit is issued. In a normal trade LC, this is the seller or exporter.
The beneficiary must carefully review the LC after receiving it.
If an LC contains conditions that cannot be met, the beneficiary should seek amendment before shipment rather than assuming that the issuing bank will ignore the condition later.
The beneficiary's entitlement to payment depends primarily on making a complying presentation.
Advising Bank
The advising bank is the bank that advises the credit to the beneficiary at the request of the issuing bank.
The advising bank provides an important communication and authentication function.
However:
advising an LC is not the same as confirming it.
An advising bank that has not added confirmation does not merely by advising the LC give the beneficiary an additional independent payment undertaking equivalent to confirmation.
This distinction is frequently tested.
Confirming Bank
A confirming bank is a bank that adds its own confirmation to the issuing bank's credit upon the issuing bank's authorisation or request.
Confirmation creates an additional undertaking in favour of the beneficiary.
Therefore, with a confirmed LC, the beneficiary may have:
Issuing Bank Undertaking + Confirming Bank Undertaking
Confirmation is particularly useful where the exporter is concerned about:
issuing-bank risk;
country risk;
transfer or political risk; or
difficulty in obtaining payment from a foreign issuing bank.
A bank requested or authorised to add confirmation is not automatically required to do so. If it is unwilling to confirm, UCP 600 provides for it to inform the issuing bank and it may advise the credit without confirmation.
Nominated Bank
A nominated bank is the bank with which the credit is available. If the credit is available with any bank, any bank can fall within the UCP definition of nominated bank.
Nomination by itself should not be confused with confirmation.
A nominated bank does not automatically assume the same independent undertaking as a confirming bank merely because it has been nominated. An express agreement or other undertaking may create additional obligations.
Rights and Liabilities of Major Parties
Party | Main Right or Benefit | Main Responsibility or Liability |
|---|---|---|
Applicant | Obtains documentary conditions supporting payment control | Gives clear LC instructions and meets obligations towards issuing bank |
Issuing Bank | Has reimbursement rights under its arrangement with applicant | Must honour a complying presentation according to its LC undertaking |
Beneficiary | Can claim under the LC by making a complying presentation | Must present documents that satisfy LC requirements |
Advising Bank | Acts as communication channel for the credit | Advises the credit according to its role; advice alone is not confirmation |
Confirming Bank | May charge for taking additional risk | Adds its own undertaking to honour or negotiate a complying presentation |
Nominated Bank | May act under the nomination | Nomination alone does not necessarily create an obligation to honour or negotiate |
The most important examination distinction is between the issuing bank's definite undertaking, the confirming bank's additional undertaking, and the more limited position of an advising or merely nominated bank.
Important Types of Letters of Credit
LCs can be classified in several ways. One LC can fall into more than one category.
For example, an LC may simultaneously be:
irrevocable;
confirmed;
transferable; and
available by sight payment.
Therefore, these classifications are not mutually exclusive.
1. Sight Letter of Credit
Under a sight structure, payment is due when a complying presentation is made and the relevant bank determines that the documents comply.
This provides comparatively faster payment to the beneficiary.
A sight LC should not be confused with advance payment. The exporter normally still has to make the required documentary presentation.
2. Usance or Term Letter of Credit
A usance or term LC provides payment at a specified future date rather than immediately at sight.
This gives the buyer a period of credit while providing the seller with the protection of the LC undertaking, subject to the terms of the credit.
Usance structures may involve deferred payment or acceptance depending on how the credit is made available.
3. Deferred Payment Credit
Under a deferred-payment credit, the bank incurs an obligation to pay at the agreed future maturity date following a complying presentation.
A draft or bill of exchange is not inherently necessary merely because payment occurs later. ICC guidance specifically recognises deferred-payment credits as an alternative to structures requiring a banker's acceptance.
4. Acceptance Credit
An acceptance credit normally involves a time draft drawn on the bank specified in the LC.
Upon a complying presentation, the relevant bank accepts the draft and payment is made at maturity.
The CAIIB distinction is:
Deferred payment: future payment undertaking without necessarily requiring an accepted draft.
Acceptance: future payment structure involving acceptance of a draft.
5. Negotiation Credit
A credit may be available by negotiation.
Under UCP 600, negotiation involves purchase by a nominated bank of drafts and/or documents under a complying presentation by advancing or agreeing to advance funds to the beneficiary within the required framework.
A common trap is assuming that every bank forwarding documents has “negotiated” them. Negotiation has a specific meaning under UCP 600. ICC notes that a draft is not always required for negotiation.
6. Confirmed Letter of Credit
A confirmed LC carries the undertaking of the issuing bank plus the undertaking of the confirming bank.
The beneficiary may seek confirmation where it considers the issuing bank or issuing country risk unacceptable.
7. Transferable Letter of Credit
A transferable LC allows the first beneficiary to transfer the credit, wholly or partly as permitted, to one or more second beneficiaries.
For this to operate under UCP 600 Article 38, the credit must specifically state that it is transferable.
This structure is useful where an intermediary receives an LC from a buyer but the goods are actually supplied by another party.
A transferring bank is not obliged to transfer a credit except to the extent and in the manner to which it has expressly agreed.
Important Trap
A transferred credit cannot normally be transferred onward by a second beneficiary to another subsequent beneficiary under Article 38.
8. Back-to-Back Letter of Credit
Back-to-back LCs are also commonly used by intermediaries.
However, unlike a transferable credit, a back-to-back arrangement involves two separate documentary credits:
a master LC issued in favour of the intermediary; and
a second LC issued in favour of the actual supplier, generally supported by the master LC arrangement.
The second LC is a separate undertaking and is not simply a transfer of the first LC.
Transferable vs Back-to-Back
Basis | Transferable LC | Back-to-Back LC |
|---|---|---|
Number of credits | One LC transferred | Two separate LCs |
Main UCP treatment | Specifically covered by Article 38 | Separate credits; not simply an Article 38 transfer |
Intermediary | First beneficiary | Beneficiary of master LC and applicant for second LC |
Supplier | Second beneficiary | Beneficiary of second LC |
Bank risk | Based on original credit and transfer | Bank assumes obligations under a separate second credit |
This distinction is a high-confusion CAIIB area.
9. Revolving Letter of Credit
A revolving LC provides for the credit amount or availability to be reinstated according to agreed conditions without requiring a completely new credit for each recurring transaction.
It is useful where the same buyer regularly purchases similar goods from the same seller over a period.
Revolving arrangements may be structured by amount or time depending on the terms.
10. Red Clause Letter of Credit
A red clause LC allows the beneficiary to receive an advance before shipment, subject to the terms stated in the credit.
It can therefore provide pre-shipment funding to the seller.
The advance increases the issuing bank's exposure because funds may be made available before the normal shipping documents are produced.
11. Green Clause Letter of Credit
A green clause LC goes further in linking the pre-shipment advance to evidence relating to storage of goods.
ICC guidance describes green clause structures as permitting advance payment against documents such as warehouse receipts or similar evidence relating to stored goods.
Red Clause vs Green Clause
Basis | Red Clause | Green Clause |
|---|---|---|
Main purpose | Pre-shipment advance | Pre-shipment advance with additional documentary security |
Typical support | Undertaking or documents specified in LC | Storage or warehouse-related evidence |
Relative bank protection | Lower depending on structure | Greater documentary security through stored goods |
12. Standby Letter of Credit
A standby LC operates differently from the normal commercial documentary credit.
A commercial LC is normally expected to be drawn upon as the agreed payment mechanism.
A standby LC is generally intended to provide protection if the applicant fails to perform or pay. It therefore functions more like a secondary payment or performance-support mechanism.
UCP 600 can apply to standby credits to the extent applicable when incorporated, while ISP98 is a specialised international framework developed specifically for standby letters of credit.
Practical Banking Application
Consider an Indian importer purchasing industrial equipment from an overseas exporter.
The exporter does not want to ship goods solely on the importer's promise to pay. The importer also does not want to pay the full amount before shipment.
The parties agree on an LC.
The importer approaches its bank as the applicant. The bank assesses the customer's creditworthiness and issues the LC in favour of the exporter.
The LC may be advised through a bank in the exporter's country.
If the exporter is comfortable with the issuing bank, simple advice may be sufficient. If the exporter wants additional payment protection, it may request a suitable confirmed structure.
The exporter ships the goods and presents the required documents.
The banks examine those documents in accordance with the LC terms and applicable UCP rules. They do not determine whether the physical machinery performs exactly as promised under the commercial contract.
For an Indian bank, the UCP framework operates alongside applicable Indian laws, FEMA/RBI requirements, sanctions controls, KYC/AML requirements and the bank's internal credit and trade-finance policies. UCP itself is a set of contractual rules rather than a national statute.
CAIIB Exam Focus
Independence Principle
Look for statements suggesting that the bank's obligation automatically depends on performance of the sales contract. Such statements may violate the autonomy principle.
Documents Versus Goods
If a question says that an issuing bank must physically inspect the goods before honouring a complying presentation, examine it carefully. Banks deal with documents rather than the underlying goods or services.
Advising Bank Versus Confirming Bank
This is one of the most important distinctions.
An advising bank does not automatically assume the issuing bank's payment liability.
A confirming bank adds its own undertaking.
Nomination Versus Confirmation
Merely naming a bank as nominated bank does not automatically make it a confirming bank.
Transferable Versus Back-to-Back
Remember:
Transferable = one credit transferred.
Back-to-back = two separate credits.
Sight Versus Usance
Sight concerns payment following a complying presentation, whereas usance involves payment at a future determinable date.
Deferred Payment Versus Acceptance
Do not assume that every future-payment LC requires a bill of exchange.
UCP 600 Versus Law
UCP 600 is an internationally accepted set of ICC rules. It becomes applicable through incorporation into the documentary credit; it does not replace applicable national law or regulatory requirements.
Common Exam Traps
Trap 1: “The LC Is Part of the Sale Contract”
Incorrect.
The LC arises because of the commercial transaction but remains independent from the underlying sale contract under the autonomy principle.
Trap 2: “The Bank Guarantees the Quality of Goods”
Incorrect.
Banks deal with documents, not goods, services or performance.
Trap 3: “Advising the LC Means the Bank Has Confirmed It”
Incorrect.
Confirmation requires the bank to add its own undertaking. Advice alone does not create the same obligation.
Trap 4: “Every Nominated Bank Must Pay”
Incorrect.
Nomination by itself should not be equated with an independent confirmation or an automatic obligation to honour or negotiate.
Trap 5: “A Transferable LC Can Be Freely Transferred Again and Again”
Incorrect.
UCP 600 Article 38 restricts onward transfer by a second beneficiary.
Trap 6: “Transferable and Back-to-Back LCs Are the Same”
Incorrect.
A transferable LC involves transfer of the original credit. A back-to-back transaction involves a separate second LC.
Trap 7: “Usance LC Always Means Acceptance LC”
Incorrect.
Future payment may be structured through deferred payment without necessarily requiring an accepted draft.
Trap 8: “Revocable LC Is the Normal Position under UCP 600”
Incorrect.
A documentary credit governed by UCP 600 is irrevocable.
Memory Techniques
For the fundamental LC principles, remember I-D-C-I:
I – Independent: LC is independent of the underlying contract. D – Documents: Banks deal with documents, not goods. C – Compliance: Payment depends on a complying presentation. I – Irrevocable: A UCP 600 credit is irrevocable.
For the major parties, remember the transaction in three layers:
Commercial Parties: Applicant and Beneficiary Primary Bank: Issuing Bank Additional Banks: Advising, Confirming and Nominated Banks
The key to CAIIB LC questions is to identify which bank has merely communicated the credit and which bank has actually undertaken to pay.