The Standby LC Expired. The Seller Had Already Shipped.
Quote from chief_editor on May 31, 2026, 3:00 amStandby letters of credit provide payment security only while they are valid. Shipments made near expiry with document delays leave sellers without recourse.
A seller of refined copper agreed to a series of monthly deliveries under a one-year contract. Payment terms: open account, backed by a standby letter of credit that the buyer would keep valid and renewed, allowing the seller to draw if the buyer failed to pay within 30 days of invoice date.
Eleven months into the contract, everything was running smoothly. Then the buyer's SBLC expired on the 28th of the month. The seller's standard delivery that month shipped on the 21st. Invoice was issued on the 22nd. Payment was due on the 22nd of the following month. The SBLC expired eight days after shipment, 22 days before the payment due date.
The buyer paid the prior month's invoices on time. They did not renew the SBLC. In the 12th month, they did not pay the invoice from month 11. The seller had shipped goods worth $840,000. The SBLC was expired. The seller was an unsecured creditor.
A Standby LC Is a Draw Mechanism, Not a Guarantee of Payment Timing
A standby LC is a conditional payment undertaking by a bank: if the beneficiary (typically the seller) presents documents demonstrating that the applicant (typically the buyer) has failed to perform a specific obligation — most commonly failing to pay an invoice by the due date — the issuing bank will pay the standby LC amount.
The seller can draw on the standby LC only after the buyer's failure to pay has occurred and within the validity period of the SBLC. If the SBLC expires before the payment due date arrives, the seller cannot draw even if the buyer subsequently fails to pay — because the draw window has closed.
The structural gap in this case: the standby LC was valid through day 28 of month 11. The seller shipped on day 21, creating an invoice due on day 22 of month 12. The payment obligation was created during the SBLC's validity period, but the draw right — which only arises if the buyer fails to pay — falls outside the SBLC's validity because payment is not due until month 12 day 22, after expiry.
A seller who wants a standby LC to protect all shipments under a multi-month contract needs to ensure the SBLC validity extends well beyond the payment due date of the last shipment, not just beyond the shipment date. Industry estimates for the typical structure of SBLCs in multi-month commodity contracts suggest that validity periods are frequently negotiated based on the contract end date rather than the last payment due date — creating an end-of-contract vulnerability that sophisticated sellers catch and less experienced sellers discover when payment fails.
The Renewal Risk in Long-Term Contracts
For contracts that run 12 to 24 months and use renewable SBLCs, the buyer controls the renewal. A buyer who intends to default — or who is experiencing financial deterioration and is selectively managing which commitments to honor — has a mechanism: allow the SBLC to expire without renewal shortly before the final delivery cycle, ship the last delivery against the expired SBLC, and then decide whether to pay based on their financial position and dispute leverage.
Sellers who ship against SBLCs on multi-month contracts without tracking SBLC validity relative to each shipment's payment due date are accepting a structural vulnerability that materializes specifically at the end of the contract, when the relationship seems most established and risk seems lowest.
The operational fix is straightforward: require the SBLC to extend at least 60 to 90 days beyond the last scheduled payment due date under the contract, and cease shipments if the buyer fails to provide an acceptable renewal before the SBLC validity falls within the payment window for the next delivery. This rule requires the seller to monitor SBLC validity continuously, which is an administrative burden that is small relative to the exposure from shipping goods against an expired guarantee.
Standby letters of credit provide payment security only while they are valid. Shipments made near expiry with document delays leave sellers without recourse.
A seller of refined copper agreed to a series of monthly deliveries under a one-year contract. Payment terms: open account, backed by a standby letter of credit that the buyer would keep valid and renewed, allowing the seller to draw if the buyer failed to pay within 30 days of invoice date.
Eleven months into the contract, everything was running smoothly. Then the buyer's SBLC expired on the 28th of the month. The seller's standard delivery that month shipped on the 21st. Invoice was issued on the 22nd. Payment was due on the 22nd of the following month. The SBLC expired eight days after shipment, 22 days before the payment due date.
The buyer paid the prior month's invoices on time. They did not renew the SBLC. In the 12th month, they did not pay the invoice from month 11. The seller had shipped goods worth $840,000. The SBLC was expired. The seller was an unsecured creditor.
A Standby LC Is a Draw Mechanism, Not a Guarantee of Payment Timing
A standby LC is a conditional payment undertaking by a bank: if the beneficiary (typically the seller) presents documents demonstrating that the applicant (typically the buyer) has failed to perform a specific obligation — most commonly failing to pay an invoice by the due date — the issuing bank will pay the standby LC amount.
The seller can draw on the standby LC only after the buyer's failure to pay has occurred and within the validity period of the SBLC. If the SBLC expires before the payment due date arrives, the seller cannot draw even if the buyer subsequently fails to pay — because the draw window has closed.
The structural gap in this case: the standby LC was valid through day 28 of month 11. The seller shipped on day 21, creating an invoice due on day 22 of month 12. The payment obligation was created during the SBLC's validity period, but the draw right — which only arises if the buyer fails to pay — falls outside the SBLC's validity because payment is not due until month 12 day 22, after expiry.
A seller who wants a standby LC to protect all shipments under a multi-month contract needs to ensure the SBLC validity extends well beyond the payment due date of the last shipment, not just beyond the shipment date. Industry estimates for the typical structure of SBLCs in multi-month commodity contracts suggest that validity periods are frequently negotiated based on the contract end date rather than the last payment due date — creating an end-of-contract vulnerability that sophisticated sellers catch and less experienced sellers discover when payment fails.
The Renewal Risk in Long-Term Contracts
For contracts that run 12 to 24 months and use renewable SBLCs, the buyer controls the renewal. A buyer who intends to default — or who is experiencing financial deterioration and is selectively managing which commitments to honor — has a mechanism: allow the SBLC to expire without renewal shortly before the final delivery cycle, ship the last delivery against the expired SBLC, and then decide whether to pay based on their financial position and dispute leverage.
Sellers who ship against SBLCs on multi-month contracts without tracking SBLC validity relative to each shipment's payment due date are accepting a structural vulnerability that materializes specifically at the end of the contract, when the relationship seems most established and risk seems lowest.
The operational fix is straightforward: require the SBLC to extend at least 60 to 90 days beyond the last scheduled payment due date under the contract, and cease shipments if the buyer fails to provide an acceptable renewal before the SBLC validity falls within the payment window for the next delivery. This rule requires the seller to monitor SBLC validity continuously, which is an administrative burden that is small relative to the exposure from shipping goods against an expired guarantee.