Credit Letter – Everything You Need to Know

Tallysolutions

Tally Solutions

Updated on Apr 7, 2026

30 second summary | Credit letters act on behalf of buyers, assuring sellers of payment when compliant documents are submitted. Even if buyers delay, the issuing bank pays once conditions are met. Banks offer various types, such as revocable, irrevocable, commercial, revolving and back-to-back LCs.

A letter of credit (LC), also known as a credit letter, is a financial document that improves your credibility by facilitating payment to sellers once they meet the LC’s document requirements. 

As a business owner, you may have to buy materials and other equipment from domestic or international suppliers and trust is essential in these transactions. Using an LC helps strengthen your relationship with suppliers and supports overall business profitability.

Meaning of a credit letter

An LC is issued by a bank or financial institution and sets out the conditions sellers must meet to receive payment. Sellers must submit the required documents as specified in the LC and the bank ensures payment if these documents comply with the terms.

Letters of credit are most commonly used for international transactions. Buyers can obtain an LC against collateral, credit limits, bank deposits or other security, and banks usually charge a commission calculated as a percentage of the LC amount.

The three main parties involved in an LC transaction are:

  • The applicant (usually the importer or buyer)
  • The issuing bank
  • The beneficiary (usually the exporter or seller)

Types of credit letters

Businesses in India should be aware of the common types of credit letters issued by banks:

  • Commercial LC

This is the most widely used form of documentary credit in international trade. It enables payment to the seller once compliant documents, such as the commercial invoice and bill of lading, are submitted and verified by the bank.

  • Standby LC

Under this arrangement, banks pay the seller only if the buyer fails to fulfil payment or contractual obligations within the due date. Standby LCs act as a financial safety net rather than the primary payment method.

  • Revolving LC

Used for repeated transactions between the same parties, a revolving LC automatically renews its value after each use, allowing sellers to present documents multiple times within the agreed credit limit and period.

  • Confirmed LC

A second bank, usually in the seller’s country, confirms the LC issued by the first bank. Both banks then ensure payment, which is useful for high-risk international transactions.

  • Sight LC

The issuing bank makes payment immediately or within a short period after verifying the submitted documents.

  • Revocable and irrevocable LC

An irrevocable LC cannot be amended or cancelled without agreement from all parties, including the issuing bank, confirming bank (if applicable) and the beneficiary. Under modern international trade rules, such as UCP 600, LCs are considered irrevocable by default.

  • Back-to-back LC

Used when intermediaries are involved between buyers and suppliers. The issuing bank provides an LC for the intermediary, which is then used as security to obtain another LC issued in favour of the supplier.

  • Transferable LC

The LC can be transferred from the first beneficiary (intermediary) to the ultimate beneficiary (supplier). Generally, it can be transferred only once unless specified otherwise in the LC terms.

Mandatory documents for a letter of credit

The documents required under a letter of credit depend on the terms specified in the LC.

Commonly requested documents include:

  • Commercial invoice
  • Bill of lading or other transport document
  • Packing list
  • Insurance document (if required under the trade contract)
  • Certificate of origin
  • Inspection or quality certificate (if specified in the LC)
  • Properly filled LC application form
  • Financial records or credit details of the buyer
  • Transport and cargo documentation

Banks carefully examine these documents to ensure they comply with the terms of the LC before releasing payment.

How letters of credit can help businesses succeed

Letters of credit improve security in trade and support the overall profitability and operations of a business in several ways:

  • Reduced risk of payment failures

Sellers depend on the revenue from the sale of goods for their growth, expansion and diversification. When they transact with buyers backed by bank-issued LC, they can be assured of receiving payment.

Even if buyers fail to pay within the due dates, the issuing bank honours the LC once compliant documents are submitted, reducing financial risk for sellers.

  • Confidently deal in international transactions

Networking is key to business success. The security provided by LCs allows even small-scale businesses, such as MSMEs, to transact confidently with unknown international suppliers. 

As LCs ensure the mitigation of payment risks, sellers are confident to deal with different currencies and legal procedures with greater financial security.

These LCs also ensure that all parties involved in the transaction follow international trade rules and document requirements, helping businesses expand their operations and improve cash flow stability.

Conclusion

A letter of credit is an important financial document that fosters international transactions and a cordial relationship between the buyers and sellers. By offering payment assurance to the sellers, LCs act on behalf of buyers to improve confidence and credibility among all the parties involved in the deal, including the middlemen. 

Today, with global scenarios undergoing a lot of uncertainty, LCs certainly open the doors for buyers and sellers to improve the size and quality of their operations effectively. 

To manage your LCs and track LC-based transactions efficiently, try TallyPrime today.

FAQs

Banks typically charge several fees for an LC, including issuance charges, amendment fees, confirmation fees (if applicable), negotiation charges and document handling fees. These fees are usually calculated as a percentage of the LC amount and may vary depending on the bank, transaction risk and the credit's tenure.

Yes, an LC can be amended if all parties involved in the transaction agree to the changes. Amendments may be required to modify details such as shipment dates, LC value, document requirements or validity period. The issuing bank processes the amendment after receiving the beneficiary's approval.

Every LC has an expiry date and a presentation period within which the beneficiary must submit the required documents. The expiry period varies depending on the agreement between the buyer and seller, but usually ranges from 30 days to several months after shipment.

Although LCs are most commonly used in international trade transactions, they can also be used for large domestic transactions. Businesses sometimes use domestic LCs to secure payments when dealing with unfamiliar suppliers or when entering into high-value contracts.

An advising bank is usually located in the seller’s country and is responsible for authenticating the LC issued by the buyer’s bank and forwarding it to the beneficiary. The advising bank does not assure payment unless it also acts as the confirming bank.

Published on April 7, 2026

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