A Usance Letter of Credit is a letter of credit under which payment is deferred to a specified date after presentation of compliant documents, typically 30, 60, 90, 120, or 180 days. Also called a deferred-payment L/C or term L/C, the usance L/C contrasts with a sight L/C (where payment is due immediately on presentation). The seller receives a bank’s payment commitment at presentation but receives funds at the maturity date. The buyer obtains a financing window, the cargo is in hand and may have been resold before the L/C matures. Usance L/Cs are common on bulk commodity trades from China where buyers need working-capital flexibility.
How a usance L/C works
For a USD 500,000 chemical shipment under 60-day usance L/C:
- The buyer applies for the L/C at its bank, with terms specifying 60 days usance from B/L date.
- The L/C is issued with terms requiring presentation of compliant documents and payment 60 days after the bill of lading date.
- The seller ships the cargo and presents documents (B/L, commercial invoice, packing list, COA, MSDS, certificate of origin, inspection certificate) to its bank.
- The seller’s bank examines the documents for compliance and forwards them to the issuing bank.
- The issuing bank examines the documents. If compliant, the issuing bank “accepts” the L/C, confirming payment is due in 60 days from the B/L date.
- The seller now holds an accepted draft for USD 500,000 payable in 60 days. This is the “usance bill” or “term bill.”
- The seller has two options:
- Hold the bill to maturity and receive USD 500,000 in 60 days
- Discount the bill at its bank for an immediate cash payment minus a discount (typically 0.5-2% depending on tenor and Chinese-bank credit standing)
- At maturity, the issuing bank pays the holder of the bill (either the seller or the discounting bank).
- The buyer reimburses the issuing bank at maturity from its own funds or from the proceeds of resale.
The usance window is a financing instrument disguised as a payment instrument.
Discounting mechanics
For a Chinese exporter holding a 60-day usance L/C accepted by ICBC:
| Item | Value |
|---|---|
| L/C face value | USD 500,000 |
| Tenor (days from acceptance to maturity) | 60 |
| Annualised discount rate (typical 2026 levels) | 4.5-6.5% |
| Discount fee (60 days at 5.5% annualised) | USD 4,521 |
| Net to seller at discount | USD 495,479 |
The seller forfeits ~USD 4,500 to receive cash 60 days early. For sellers without alternative working capital, the cost is acceptable. For better-capitalised sellers, holding to maturity is often preferable.
Major L/C variants, quick reference
The L/C is a flexible instrument with several common variants:
| Variant | Distinction |
|---|---|
| Sight L/C | Payment immediately on presentation of compliant documents |
| Usance L/C (this entry) | Payment deferred 30-180 days from B/L date or acceptance |
| Irrevocable L/C | Cannot be amended or cancelled without all parties’ consent. Standard form, virtually all modern L/Cs are irrevocable under UCP 600 |
| Revocable L/C | Can be cancelled at the issuing bank’s discretion. Effectively obsolete; UCP 600 does not provide for revocable credits |
| Confirmed L/C | Payment guaranteed by a second bank (the confirming bank, typically in the seller’s country) in addition to the issuing bank. Used when the seller doubts the issuing bank’s credit standing |
| Unconfirmed L/C | Standard form, only the issuing bank’s commitment |
| Transferable L/C | The seller can transfer all or part of the L/C to a third party (typically a sub-supplier). Useful for trading-company sales |
| Back-to-back L/C | Two separate L/Cs, the trading company opens an L/C in favour of the actual supplier, backed by the L/C the buyer opened in favour of the trading company |
| Red clause L/C | Allows the seller to draw advance payment before shipment (the “red clause” is the special advance-payment provision). Used in commodity-finance arrangements where the seller needs working capital to procure inputs |
| Standby L/C (SBLC) | Default-only instrument; pays only if the underlying obligation is not performed |
For routine China-international chemical trade, the standard L/C is irrevocable, unconfirmed, sight or 60-day usance. Other variants are situation-specific.
When a usance L/C is the right instrument
Usance L/C is the right instrument when:
- The buyer needs the cargo before they can pay. A buyer that resells the cargo within 30-60 days can use the resale proceeds to fund the L/C maturity.
- The seller has financing capacity to extend deferred-payment terms (or can discount the resulting bill at acceptable cost).
- The buyer-seller relationship is established enough that the seller is comfortable with the deferred payment risk despite the L/C.
- The volume justifies the operational overhead (typical L/C minimum threshold is USD 50,000-100,000 for the operational cost to make sense).
Usance L/C is the wrong instrument when:
- The buyer is new and has limited credit standing. The L/C only protects against bank-issuer default, not against general buyer financial distress.
- The seller has tight cash-flow needs and cannot wait or absorb discount costs.
- The transaction is a one-off small-volume trade where the L/C operational cost is disproportionate to the savings.
How usance L/Cs catch exporters off guard
Three failure patterns recur:
- Discount rate volatility. A factory expecting to discount a 90-day usance L/C at 4.5% finds rates have moved to 7%, eating margin. Confirm the discount rate window with the bank before booking.
- Document discrepancy at presentation. Even one minor discrepancy (a wrong port name, a missing signature, a date mismatch) can delay acceptance. The 60-day clock cannot start until acceptance. For volume sellers, the workflow discipline of generating clean L/C documents is the main operational competency.
- Buyer-side default at maturity. The issuing bank pays the L/C at maturity regardless of buyer default, but the bank then pursues the buyer. If the buyer cannot pay, the bank may reduce the buyer’s L/C facility for future shipments.
Related terms
L/C is the parent instrument. SBLC is the standby variant. T/T is the simple wire-transfer alternative. Documentary Collection is the lower-cost intermediate option. Draft at Sight is the sight version of the bill of exchange. Bank Acceptance Bill is the Chinese-domestic equivalent term-bill instrument.