Trade Finance Instruments: LC, SBLC, DLC and the Risk of Fraudulent Use

International trade relies heavily on trust, documentation and payment security. When goods, buyers, sellers, banks and logistics chains are located in different jurisdictions, financial instruments become essential tools for reducing payment and performance risk.

Letters of Credit, Standby Letters of Credit, Documentary Letters of Credit, Bank Guarantees and related instruments can provide strong protection when properly issued, verified and structured. However, they are also frequently misused by fraudsters, intermediaries and fake trading groups to create an appearance of financial capacity.

For companies involved in commodities, industrial goods, agricultural products, energy, metals or cross-border supply chains, understanding these instruments — and the risks around them — is essential before entering into any transaction.

What Are Trade Finance Instruments?

Trade finance instruments are mechanisms used to secure payment, performance or delivery obligations in international trade.

They may involve:

• the buyer;

• the seller;

• issuing bank;

• advising bank;

• confirming bank;

• nominated bank;

• logistics providers;

• inspection companies;

• insurers;

• intermediaries;

• sometimes brokers or agents.

Their purpose is to reduce uncertainty between parties who may not know each other, operate under different legal systems and face different commercial risks.

However, the instrument itself is only as reliable as the bank, wording, transaction structure, underlying documents and parties involved.

Letter of Credit / Documentary Letter of Credit

A Letter of Credit, often referred to as a Documentary Letter of Credit, is a payment undertaking issued by a bank on behalf of the buyer.

Under an LC, the bank agrees to pay the seller provided that the seller presents documents that strictly comply with the terms of the credit.

Typical documents may include:

• commercial invoice;

• bill of lading;

• CMR or other transport document;

• certificate of origin;

• packing list;

• inspection certificate;

• insurance certificate;

• phytosanitary or quality certificates;

• weight certificate;

• customs documents.

The key principle is documentary compliance. Banks usually deal with documents, not with the physical goods themselves.

This means that even if the goods are defective, delayed or commercially problematic, payment may still be made if the required documents comply with the LC terms.

Main Risks in LC Transactions

1. Document Fraud

Fraudsters may provide falsified or manipulated documents, including fake bills of lading, inspection certificates, warehouse receipts or certificates of origin.

In some cases, the documents appear professional but cannot be verified with the original issuing source.

2. Non-Compliant Wording

An LC may contain conditions that are impossible to satisfy, unclear, contradictory or commercially dangerous.

For example:

• unrealistic shipment deadlines;

• vague product descriptions;

• missing inspection requirements;

• unclear Incoterms;

• inconsistent beneficiary details;

• excessive discretion for the buyer;

• documents required from parties outside the seller’s control.

3. Weak or Unreliable Issuing Bank

Not all banks carry the same level of credibility. An LC issued by a small, obscure or poorly rated bank may offer limited protection, especially if enforcement becomes necessary.

4. No Confirmation

An unconfirmed LC leaves the seller exposed to the issuing bank and country risk. If the issuing bank fails to pay, or if there are currency controls, sanctions, political instability or banking restrictions, the seller may not receive funds.

5. Fake SWIFT Messages

Fraudsters may claim that an LC has been issued via SWIFT, while no valid authenticated message exists in the banking system.

Any LC must be verified directly through the beneficiary’s bank, not through screenshots, PDFs or forwarded emails.

Standby Letter of Credit / SBLC

A Standby Letter of Credit is a bank undertaking that acts as a secondary payment mechanism. It is usually used as security in case one party fails to perform.

Unlike a commercial LC, which is normally used as the primary payment method, an SBLC is generally triggered only upon default.

For example, if a buyer fails to pay, the seller may draw under the SBLC by presenting the required demand and supporting documents.

How SBLCs Are Misused by Fraudsters

SBLCs are one of the most abused instruments in fraudulent trading schemes.

Common fraud patterns include:

• offers to “lease” or “monetize” SBLCs;

• claims of access to large banking instruments at discounted rates;

• fake “proof of funds” structures;

• requests for advance fees before issuance;

• use of non-bank entities pretending to issue bank instruments;

• fake SWIFT copies;

• unverifiable issuing banks;

• promises of high-yield returns based on SBLC monetization;

• use of brokers who cannot identify the real instrument owner.

In legitimate trade finance, an SBLC must be tied to a real commercial obligation, issued by a credible bank and verified through proper banking channels.

If the transaction is mainly about buying, selling, leasing or monetizing the instrument itself, rather than financing a real trade transaction, the risk is extremely high.

Demand Guarantees and Bank Guarantees

A Bank Guarantee is a bank’s undertaking to pay a beneficiary if the applicant fails to meet certain obligations.

Guarantees may cover:

• payment obligations;

• advance payment return;

• performance obligations;

• bid participation;

• warranty periods;

• customs or tax obligations.

In trade transactions, guarantees can be useful, but the wording must be carefully reviewed.

Important questions include:

• Is the guarantee payable on first demand?

• What documents are required to claim?

• Which law governs the guarantee?

• Which court or arbitration forum applies?

• Is the issuing bank reliable?

• Is the guarantee transferable?

• Is the expiry date clear?

• Are there hidden conditions that make drawing difficult?

A guarantee that looks strong commercially may be weak legally if the wording is badly drafted.

DLC, LC, SBLC: What Is the Difference?

In practice, terminology is often used incorrectly, especially by intermediaries.

Documentary Letter of Credit / DLC

A DLC is generally used as a payment mechanism for a specific shipment or trade transaction. Payment is made when the seller presents compliant documents.

Commercial Letter of Credit / LC

Often used interchangeably with DLC. It secures payment against documents.

Standby Letter of Credit / SBLC

An SBLC is usually a backup security instrument. It is drawn only if the applicant fails to pay or perform.

Bank Guarantee

A broader guarantee instrument that may secure payment, performance, advance payment, tender obligations or other contractual commitments.

The problem is that fraudsters often use these terms loosely to confuse counterparties or create an illusion of banking sophistication.

Red Flags in Trade Finance Instrument Offers

A company should be extremely cautious if it sees any of the following warning signs:

• the counterparty offers an SBLC instead of proving real payment capacity;

• the instrument is described as “leased”, “fresh cut”, “seasoned”, “monetizable” or “discounted”;

• payment is requested before bank verification;

• the bank instrument is sent as a PDF, screenshot or email attachment only;

• the issuing bank is unknown, offshore or unverifiable;

• the beneficiary is not allowed to verify the instrument directly with its own bank;

• intermediaries refuse to disclose the applicant or issuing bank;

• the transaction involves multiple brokers and unclear mandates;

• the wording is vague or inconsistent;

• the instrument is not linked to a real shipment or commercial obligation;

• the value of the instrument is disproportionate to the transaction;

• there is pressure to act quickly;

• communication takes place through free email addresses or messaging apps;

• the counterparty promises unusually high returns or guaranteed monetization.

In legitimate trade finance, transparency and bank-to-bank verification are normal. Resistance to verification is a major warning signal.

Typical Fraud Scenarios

Scenario 1: Fake SBLC as Proof of Funds

A buyer claims to have an SBLC from a major bank and uses it as proof of financial capacity. The seller accepts the claim and reserves goods or starts logistics preparation.

Later, it appears that no valid bank instrument was ever issued.

Scenario 2: Advance Fee Fraud

An intermediary proposes to arrange an SBLC or LC but requires upfront fees for issuance, blocking, insurance, compliance or bank charges.

After payment, no valid instrument is delivered.

Scenario 3: Fake Documentary Credit

A seller receives what appears to be an LC by email. The document includes bank logos and SWIFT references but has not been authenticated by the beneficiary’s bank.

The seller ships the goods and later discovers the LC was fake.

Scenario 4: Unworkable LC Terms

A buyer opens a real LC, but the wording includes conditions that are almost impossible for the seller to satisfy.

The seller ships the goods, but the bank refuses payment due to discrepancies.

Scenario 5: Fraudulent Documents Under a Real LC

The LC is real, but the documents presented are false. Since banks deal primarily with documents, not goods, the fraud may be discovered only after payment or release of cargo.

How to Verify a Trade Finance Instrument

A professional verification process should include several layers.

1. Bank-to-Bank Verification

Never rely on PDFs, screenshots, emails or broker confirmations. The instrument must be authenticated through the beneficiary’s bank using official banking channels.

2. Issuing Bank Review

Check the issuing bank’s credibility, jurisdiction, regulatory status, sanctions exposure and ability to honour the instrument.

3. Wording Analysis

Review the exact wording of the LC, SBLC or guarantee before accepting it.

The review should cover:

• applicant and beneficiary details;

• amount and currency;

• expiry date;

• place of expiry;

• governing rules;

• required documents;

• presentation deadlines;

• shipment terms;

• drawing conditions;

• transferability;

• confirmation requirements;

• governing law and jurisdiction.

4. Transaction Consistency

The instrument must match the real commercial transaction.

Check whether:

• the amount corresponds to the contract;

• the applicant is the actual buyer;

• the beneficiary is the correct seller;

• the goods description is accurate;

• Incoterms match the contract;

• shipment deadlines are realistic;

• documents can actually be produced.

5. Counterparty Due Diligence

The financial instrument does not replace counterparty verification.

You still need to check:

• legal existence;

• ownership;

• directors;

• litigation;

• insolvency;

• sanctions;

• trade history;

• financial capacity;

• reputation;

• related companies;

• operational ability to perform.

A fraudulent counterparty may use a real-looking banking instrument to hide the absence of real trading capacity.

Best Practices Before Accepting an LC, SBLC or Guarantee

Before relying on any trade finance instrument, companies should:

• request draft wording before contract signature;

• involve their bank early;

• require issuance through recognised banking channels;

• avoid third-party payments and unrelated accounts;

• avoid upfront fees to intermediaries;

• verify the issuing bank independently;

• require confirmation from a reputable bank where appropriate;

• ensure the instrument is governed by recognised rules;

• align the instrument with contract, logistics and inspection documents;

• include clear consequences if the instrument is not issued on time;

• avoid shipment before authenticated confirmation;

• document all communications and representations.

The safest structure is not necessarily the most complex one. It is the one where documents, payment, title transfer, inspection and bank obligations are aligned.

The Role of Strategic Intelligence in Trade Finance Risk

Trade finance risk is not only a banking issue. It is also an intelligence issue.

A proper assessment should combine:

• banking instrument review;

• document verification;

• counterparty due diligence;

• trade and customs data analysis;

• litigation and insolvency checks;

• sanctions and compliance screening;

• ownership and related-party mapping;

• transaction structure review;

• fraud-pattern detection.

This integrated approach helps determine whether the proposed instrument is a genuine risk-mitigation tool or part of a fraudulent scheme.

Conclusion

LCs, SBLCs, DLCs and Bank Guarantees can be powerful instruments in international trade. When properly structured, issued and verified, they protect both buyers and sellers and reduce payment risk.

However, when used by fraudsters or inexperienced intermediaries, these instruments can create a false sense of security.

A company should never rely on the name of the instrument alone. The real protection depends on the issuing bank, wording, verification process, transaction structure, counterparty reliability and enforceability.

At AVIN Strategic Intelligence, we help companies assess trade finance instruments, detect fraud indicators, verify counterparties and analyze transaction risks before capital, goods or contractual obligations are exposed.