What is a back-to-back LC?

Feb 14, 2024

Back to Back Letter of Credit Explained: Securing Complex Trade Transactions

In the realm of international trade, the stability and assurance of transactions are often bolstered by the use of a financial instrument known as a Letter of Credit (LC).


This document plays a pivotal role by involving banks that guarantee the payment from the buyer to the seller, thereby adding a significant layer of security to the business deal.


The Letter of Credit serves as a firm commitment from the buyer's bank to the seller, and its importance is magnified when dealing with global trade.


As distances increase and relationships between trading partners are often formed across borders, the LC becomes a critical tool in ensuring that both parties fulfill their contractual obligations.


Key Takeaways

  • A Letter of Credit is crucial in ensuring payment security in international trade.
  • The involvement of banks in issuing LCs mitigates the risk of non-payment.
  • LCs act as a bridge of trust between buyers and sellers in the global marketplace.

Understanding Back to Back LCs

A Back to Back Letter of Credit (Back to Back LC) is a financial instrument employed in international trade transactions. This method involves three parties: the buyer, the seller, and an intermediary, usually a broker or trader.


  • The Buyer: Provides the initial LC to the intermediary.
  • The Intermediary: Uses the buyer's LC to obtain another LC from the bank.
  • The Seller/Supplier: Receives the second LC from the bank through the intermediary in return for goods delivered.

Here's how it works in bullet points:

  • The buyer opens an LC in favor of the intermediary.
  • The intermediary presents this LC to a bank as security.
  • The bank issues a second LC to the end supplier based on the first.
  • The supplier thus gains a financial guarantee against the shipment they provide.


This arrangement ensures that the transaction is secure and that all involved parties have a form of financial protection.

Operation of Dual Letters of Credit

A dual Letter of Credit (LC) arrangement begins with a buyer obtaining a primary LC from their bank to guarantee payment to a broker. The bank issuing this guarantee is referred to as the issuing bank, and this primary LC is often referred to as the master LC.


Subsequently, the broker approaches their bank to secure an additional LC in favor of the actual supplier, using the master LC as security. This secondary LC is termed a back to back LC.


Upon shipping the goods, the supplier presents transport documents, such as the bill of lading, to their bank. After verification, the supplier's bank forwards these documents to the broker’s bank, which then releases payment to the supplier's bank.


The supplier's bank, having validated these documents, executes the payment to the supplier as agreed.


Following this, the broker’s bank submits the transport documents to the originating buyer's bank, which after thorough examination, clears the payment to the broker’s bank as per the terms of the principal LC.


Lastly, the buyer’s bank disburses the funds to the broker upon the safe delivery of the goods to the buyer. It is then the buyer’s responsibility to reimburse their bank according to the agreed terms.


Terms and Conditions under Back to Back LC

Back to back Letters of Credit (LC) establish stipulations that align closely with the principal LC's terms. The issuance of these secondary LCs arises strictly from the initial LC's beneficiary's direction, who acts as an intermediary. Consideration of an applicant's fiscal reliability plays a critical role during this process.


Key criteria are steadfast uniformity across all LCs regarding product-related specifics, such as descriptions and quantities, alongside the overarching trade conditions.


The secondary LC's monetary value is pegged to a ceiling of 90% of the primary LC's value; this differential represents the broker’s potential earnings.


Outlined protocols suggest scheduling the shipment's departure to precede the principal LC’s payment date, securing product receipt for the buyer in advance of settlement.


Nonetheless, the bank's engagement pertains to documentation accuracy rather than product quality, compelling honoring of the LC even amid merchandise defects.


Lastly, the validity period for a back to back LC is systematically set to lapse before the primary LC's expiration.


Details Enclosed in a Sequenced Letter of Credit

  • Recipient Information
  • Sum to be Transferred
  • Validity Span for completion of payment
  • Account Details of the seller's financial institution
  • Settlement Approach
  • Required Paperwork
  • Contact Details for notifications
  • Merchandise Specifications
  • Local Bank Assurance


Illustrative Scenario of Sequential Letters of Credit

In the international trade of vehicle components, brokers often play a crucial role in connecting disparate entities. Consider a situation where Company A, based in Germany, manufactures auto parts, and Company C in Australia intends to purchase these parts.


They do not have a direct trading relationship and instead rely on Broker B situated in London to facilitate their transaction.

Broker B agrees to procure the parts from Company A and sell them to Company C, thus earning a commission.


Due to the lack of direct contact between the buying and selling companies, there arises a necessity to mitigate trust issues.


Broker B orchestrates the advancement of the deal by requesting Company C to procure a Letter of Credit (LC) from a reputable Australian financial entity, termed the issuing bank. Following this, the issuing bank partners with a corresponding bank in London to issue a primary LC in Broker B's name.


As Broker B is not the actual manufacturer, he then arranges for a secondary, or back-to-back LC, using the primary LC as collateral. This secondary LC is then directed to Company A, the parts supplier in Germany.


Upon issuance, Company A manufactures and ships the components directly to Company C in Australia. The German bank releases the payment to Company A, while the issuing bank in Australia collects the funds from Company C.


Broker B benefits from the transaction by retaining the difference between the two LC amounts. This example exemplifies how back-to-back LCs effectively allocate and diminish credit risks among traders, buyers, suppliers, and intermediaries within international commerce.

Risks under Back to Back LC

  • Document Timeliness: In the scenario where the primary LC does not allow sufficient time for documentation turnover from the intermediary's bank, the situation may complicate the settlement process due to potential expiration.


  • Consistency of Terms: Differences between the conditions of the original LC and the subsequent back to back LC, including key transaction details, can lead to documentation inconsistencies, thus complicating the settlement process.

Contrasting Back to Back LC with Transferable LC

Back to Back LC:

  • Involves two distinct LCs: the original and the secondary one.
  • Secondary LC is dependent on the original, serving as collateral.
  • Enables transactions where primary LC holders need to secure a deal with suppliers.


Transferable LC:

  • Contains only a single LC that can be partially or fully assigned to another party.
  • The option to transfer must be specified when the LC is first issued by the bank.
  • Facilitates the redirection of funds to secondary beneficiaries by the main recipient.

Frequently Asked Questions on Back to Back Letters of Credit

Initiating a Back to Back LC

To initiate this process, an intermediary may request their financial institution to issue a secondary LC, utilizing an existing primary LC as collateral. This request is made to secure the supply of goods without the need to wait for the primary LC.


Understanding Front and Back LCs

In a scenario where an intermediary's bank issues a secondary LC to the supplier in advance of receiving the principal LC, this arrangement is known as Front and Back LCs. This ensures the supplier's terms are secured ahead of the main trade commitment.


Explanation of Back to Back Guarantee

A Back to Back Guarantee involves two distinct financial institutions issuing separate LCs for a single transaction. This practice is common when an intermediary is involved, facilitating the trade arrangement between the original buyer and supplier.


Common Inquiries

Explaining the Operation of Sequential Letters of Credit

Sequential letters of credit involve two distinct financial documents issued by a bank on behalf of the same client to ensure a chain of transactions.


Specifically, the first letter of credit is utilized to conduct business with a supplier, while the second, contingent upon the first, is dedicated to a buyer.


The core mechanics dictate that payment from the end buyer, through their letter of credit, is used to finance the payment to the supplier under the first letter of credit.


Illustration of Sequential Letter of Credit Trade

A typical sequence in such a transaction might proceed as follows:

  1. An intermediary acquires a letter of credit from a buyer to purchase goods.
  2. Leveraging this commitment, the intermediary secures a second letter of credit for the supplier.
  3. The goods are shipped directly from the supplier to the end buyer.
  4. Payment flows from the end buyer's bank to the intermediary, and from the intermediary to the supplier's bank.


Risks Linked to Sequential Letters of Credit

  • Credit Risk: Reliance on the creditworthiness of two different parties
  • Operational Risk: Complexity can lead to administrative errors or delays
  • Legal Risk: Non-compliance with terms could lead to legal disputes


Comparing Sequential and Revolving Credits

While sequential letters of credit involve two interlinked transactions, a revolving letter of credit allows for multiple uses over a period without the need for separate documents for each transaction, offering advantages in recurring transactions.


Usage Context for Sequential Letters of Credit

This financial tool is often utilized in transactions involving intermediaries who facilitate the purchase and sale of goods between two other parties but lack the capital to make upfront purchases.


Differentiation from Transferable Letters of Credit

Distinctly, a transferable letter of credit permits the original beneficiary to allocate credit. They can do this either partially or fully, to another party. This is unlike a sequential letter of credit, which engages two separate letters interdependently.

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