Back-to-back LC cost depends on the bank risk, the commodity, the tenor, and the document chain
A back-to-back letter of credit is usually priced as a structured trade finance transaction rather than a simple bank tariff item. The cost is driven by the quality of the master LC, the issuing bank behind it, the applicant’s credit profile, the supplier’s location, the shipment route, the tenor, the margin required by the bank, and whether confirmation or discounting is required.
For a routine transaction, the visible bank charges may look modest. For a difficult transaction involving emerging market risk, unfamiliar counterparties, thin documentation, sanctions-sensitive routing, usance terms, commodity price volatility, or document mismatch risk, the total cost can become materially higher.
Financely helps clients structure back-to-back LC transactions, prepare lender-ready documentation, coordinate bank discussions, and identify the practical cost stack before the client burns time with the wrong bank or the wrong procedure. For transaction review, submit the deal through Financely’s deal submission portal.
What a back-to-back letter of credit actually is
A back-to-back LC uses an incoming master LC as the commercial foundation for a second LC issued in favour of the supplier. The first LC is issued by the buyer’s bank in favour of the intermediary. The intermediary then asks its own bank to issue a second LC in favour of the supplier, usually on adjusted terms that protect the intermediary’s margin, delivery timetable, document flow, and commercial position.
The secondary LC is a separate bank undertaking. The bank issuing the second LC still needs credit approval, KYC, sanctions clearance, documentary review, and comfort that reimbursement can be made from the master LC or from other collateral. A master LC improves the structure, but it rarely removes the bank’s need for margin, a credit line, a reimbursement undertaking, or control over documents.
Master LC
The buyer’s bank issues the master LC in favour of the intermediary. The intermediary relies on this instrument as the repayment source for the trade flow.
Secondary LC
The intermediary’s bank issues the second LC in favour of the supplier. This LC normally mirrors key shipment and payment mechanics while preserving the trader’s commercial margin.
Bank credit approval
The issuing bank still assesses applicant risk, document risk, country risk, commodity risk, payment timing, and reimbursement mechanics before issuing the secondary LC.
Document control
The structure depends on clean commercial invoices, bills of lading, inspection certificates, insurance documents, packing lists, certificates of origin, and LC terms that can actually be complied with.
Indicative cost components
The total cost of a back-to-back LC usually includes bank charges, collateral costs, document handling fees, financing costs, and professional structuring fees. Some costs are paid upfront. Some are charged quarterly. Some are deducted when documents are negotiated or discounted. The table below gives a practical range for market discussion, not a quote.
| Cost item | Typical range | What affects pricing |
|---|---|---|
| Secondary LC issuance commission | 0.75% to 3.00% per annum of LC face value | Applicant credit strength, bank line availability, tenor, country risk, transaction complexity, cash margin, and whether the bank treats the LC as fully secured or credit-exposed. |
| Cash margin or collateral | 10% to 100% of LC face value | Master LC bank quality, buyer jurisdiction, supplier risk, commodity volatility, applicant balance sheet, reimbursement control, and bank appetite. |
| Advising fee | Often USD 150 to USD 750 per LC | Bank tariff, jurisdiction, SWIFT routing, amendment frequency, and correspondent bank involvement. |
| Confirmation commission | 0.50% to 4.00% per annum | Issuing bank risk, buyer country risk, LC tenor, sanctions exposure, bank limits, and whether the confirming bank has clean credit appetite for the issuing bank. |
| Usance or deferred payment charge | 0.50% to 3.00% per annum, sometimes higher | Payment tenor, acceptance bank, credit spread, reimbursement risk, and whether the seller wants payment before maturity. |
| Discounting or negotiation cost | Benchmark rate plus risk margin, often 3.00% to 10.00% per annum | Clean documents, confirming bank quality, tenor, obligor risk, discrepancy history, and whether discounting is with or without recourse. |
| Document examination and handling | 0.10% to 0.30% of document value, or fixed bank tariff | Number of document sets, inspection requirements, couriering, discrepancies, re-presentations, and manual handling. |
| Amendment, SWIFT, courier, discrepancy fees | USD 50 to USD 500 per event, sometimes higher | Number of amendments, MT700 and MT707 traffic, late changes, inconsistent shipping terms, and document errors. |
| Structuring and advisory support | Case-specific retainer | Transaction size, bank outreach, document review, LC term sheet work, counterparty screening, commodity flow, and closing coordination. |
Practical point: the cheapest LC is often the one that is properly structured before it reaches the bank. A poorly drafted master LC, missing inspection clause, unrealistic shipment window, non-bank issuer, weak applicant, or unworkable document list can create amendment costs, delays, discounting problems, and failed supplier acceptance.
Worked example: USD 1,000,000 back-to-back LC
Assume an intermediary receives a USD 1,000,000 master LC from a buyer and asks its bank to issue a 90-day secondary LC to the supplier. The bank requires 20% cash margin and charges 1.50% per annum for issuance. The transaction does not require confirmation or discounting.
| Item | Indicative calculation | Indicative cost |
|---|---|---|
| Issuance commission | USD 1,000,000 x 1.50% x 90 / 360 | USD 3,750 |
| Cash margin | 20% of LC face value | USD 200,000 held as collateral |
| Advising, SWIFT, document handling | Bank tariff and document flow | USD 500 to USD 2,000+ |
| Amendments or discrepancies | Only if terms change or documents fail examination | Variable |
| Estimated visible bank charges | Before professional fees and opportunity cost of collateral | Approx. USD 4,250 to USD 5,750+ |
If the secondary LC needs confirmation at 2.00% per annum for 90 days, the transaction may add roughly USD 5,000 in confirmation cost. If the supplier or intermediary also wants discounting, the financing cost can become materially larger because the bank is advancing cash before final reimbursement.
Warning: a back-to-back LC should not be priced by looking only at the headline issuance fee. The real economics include collateral lock-up, confirmation spread, discounting cost, document risk, amendment risk, insurance, inspection, freight timing, and the probability that the supplier will reject weak bank paper.
Estimate a rough LC cost range
Use this simple calculator for a rough bank-charge estimate. It excludes collateral opportunity cost, taxes, legal costs, advisory fees, insurance, freight, inspection, and any non-standard bank charges.
Indicative bank-charge calculator
Why some back-to-back LCs cost far more than expected
Back-to-back LC pricing increases when the bank sees documentary weakness, reimbursement risk, or counterparty risk. A bank may like the incoming master LC and still decline the secondary LC if the shipment terms, buyer bank, supplier country, commodity type, or document requirements create a repayment gap.
The master LC is weak
A master LC from a low-rated bank, restricted jurisdiction, non-standard issuer, or unclear reimbursing bank can force higher margin, confirmation, or outright rejection.
The document chain is mismatched
Problems arise when the commercial invoice, bill of lading, inspection certificate, insurance certificate, packing list, and certificate of origin cannot be aligned across both LCs.
The shipment window is too tight
A short latest shipment date, poor logistics planning, or unrealistic document presentation period can create amendment costs and supplier resistance.
The supplier wants stronger paper
Suppliers may demand confirmation, payment at sight, a recognised advising bank, or a stronger issuing bank before releasing cargo or production capacity.
Back-to-back LC cost compared with a transferable LC
A transferable LC can be cheaper where the master LC is expressly transferable and the bank is willing to transfer it to the supplier. The structure can reduce the need for a second independent LC issuance. Many buyers refuse transferable LCs because they want tighter control over the beneficiary, documents, and commercial chain.
A back-to-back LC gives the intermediary more control over pricing, supplier confidentiality, document substitution, shipment terms, and margin protection. That control comes with extra bank scrutiny because the secondary LC is a separate undertaking.
| Structure | Cost profile | Commercial use case |
|---|---|---|
| Transferable LC | Often cheaper if accepted by all parties | Useful where the buyer allows transfer and the trader can preserve enough margin through permitted invoice substitution. |
| Back-to-back LC | Usually higher because a second LC is issued | Useful where the trader needs supplier confidentiality, separate terms, or a secondary LC tailored to the procurement leg. |
| Assignment of proceeds | Often cheaper, narrower protection | Useful where the supplier accepts payment assignment rather than a full independent LC undertaking. |
| Confirmed LC | Higher where bank or country risk is material | Useful where the seller wants a stronger bank obligation from a confirming bank in a preferred jurisdiction. |
What Financely needs to assess cost
Cost can only be narrowed after reviewing the actual trade flow. A verbal description is rarely enough. Banks and trade finance desks need to see the buyer, seller, commodity, contract terms, LC draft, Incoterms, port pairs, inspection requirements, insurance terms, and repayment route.
Buyer and master LC
- Buyer name and jurisdiction
- Issuing bank name and country
- Draft MT700 or LC terms
- LC amount, tenor, expiry, and shipment window
Supplier and secondary LC
- Supplier name and country
- Supplier bank details
- Required LC wording
- Payment at sight, usance, or deferred payment terms
Commodity and logistics
- Commodity description and HS code where available
- Origin and destination
- Incoterms
- Inspection, insurance, and transport documents
Applicant capacity
- Corporate profile
- Bank relationship
- Available cash margin or collateral
- Track record in similar trades
Need a back-to-back LC cost review?
Submit the buyer, supplier, commodity, draft LC terms, tenor, shipment route, and required amount. Financely will review whether the structure is bankable and what cost drivers need to be addressed before bank outreach.
FAQ: back-to-back letter of credit cost
How much does a back-to-back LC cost?
A routine back-to-back LC may carry issuance commission of roughly 0.75% to 3.00% per annum, plus advising, document handling, SWIFT, amendment, and possible confirmation or discounting fees. The final cost depends on bank approval, tenor, transaction risk, collateral, and document quality.
Is cash margin always required?
Many banks require cash margin or an approved credit facility before issuing the secondary LC. The margin can range from partial collateral to 100% cash cover, depending on the applicant, master LC bank, buyer jurisdiction, and trade risk.
Can the master LC alone pay for the secondary LC?
The master LC can support the repayment structure, but the issuing bank of the secondary LC still makes its own credit decision. The bank may require margin, a credit line, assignment of proceeds, document control, or other reimbursement protection.
Why does confirmation increase cost?
Confirmation adds a stronger payment undertaking from another bank. The confirming bank prices the risk of the issuing bank, buyer country, tenor, sanctions exposure, and document compliance.
What is the difference between confirmation and discounting?
Confirmation adds payment protection. Discounting accelerates cash by allowing a bank to advance funds before maturity, usually after compliant documents are presented. Discounting has a financing cost tied to tenor, credit risk, and bank appetite.
Is a back-to-back LC cheaper than a transferable LC?
A transferable LC can be cheaper where the master LC is transferable and the bank accepts the transfer. A back-to-back LC usually costs more because a separate secondary LC is issued, reviewed, and risk-approved.
Can Financely issue the LC directly?
Financely does not act as the issuing bank. Financely supports structuring, documentation, bank matching, transaction packaging, and execution coordination. Issuance remains subject to bank KYC, credit approval, sanctions screening, and documentary conditions.
What documents are needed for a cost estimate?
Financely usually needs the buyer details, supplier details, draft master LC, proposed secondary LC terms, contract or pro forma invoice, commodity details, Incoterms, shipment route, tenor, amount, inspection requirements, and applicant profile.
Can a back-to-back LC be used for commodities?
Yes. Back-to-back LCs are often used in commodity trading, including metals, agricultural products, petroleum products, chemicals, and industrial inputs. Commodity volatility, inspection, logistics, and title document control affect pricing.
How fast can a back-to-back LC be arranged?
A clean transaction with complete documents and an existing bank relationship may move within a few weeks. Complex transactions involving new bank relationships, unfamiliar counterparties, country risk, or difficult LC wording can take longer.
This article is for general commercial information only and does not constitute legal, tax, investment, banking, or credit advice. Financely provides transaction-led advisory and coordination support for trade finance and structured finance mandates. Any LC issuance, confirmation, discounting, or financing remains subject to bank approval, KYC, AML, sanctions screening, credit sanction, and final documentation.