What it means
The instrument exists to solve a trust problem. A supplier in one country does not want to ship goods to a buyer it has never met, and the buyer does not want to send money before the goods exist.
The buyer's bank steps in with a written undertaking to pay against specified documents, and both sides can proceed. The word irrevocable is the whole point.
A revocable credit could be withdrawn by the buyer at any moment, making it nearly worthless as security, which is why the standard international rules treat every credit as irrevocable unless it says otherwise. Amending an irrevocable credit requires the consent of the issuing bank, the beneficiary and usually the confirming bank.
Banks deal in documents, not goods, and this trips up newcomers. Payment depends on presenting a compliant set of papers, typically an invoice, a bill of lading, an insurance certificate and any inspection reports, exactly as the credit describes them.
A shipment can be perfect and still go unpaid if a document is late, misspelled or missing, and a large share of first presentations are rejected for such discrepancies. Confirmation adds a second layer.
If the seller does not trust the buyer's bank or the country it sits in, a bank in the seller's own market can confirm the credit, adding its own undertaking to pay for an extra fee. Exporters into higher-risk markets frequently insist on this.
The trade-offs are cost and rigidity. Fees typically run from a fraction of a percent up to a few percent of the value depending on tenor and risk, the paperwork is exacting, and the buyer's credit line is tied up for the duration.
For repeat trade between parties who trust each other, cheaper methods such as documentary collection or open account terms usually take over.
In practice
Real-world examples.
Example
A furniture importer orders $340,000 of hardwood from a first-time supplier overseas and opens an irrevocable letter of credit payable against a clean bill of lading and an independent inspection certificate. The supplier ships confidently because payment now depends on the bank, not on the importer's cash position.
Example
An agricultural exporter selling into a market with currency controls asks for the credit to be confirmed by a bank in its own country. It pays an extra 0.5% for the confirmation and treats that as the cost of removing the risk that the buyer's bank cannot obtain foreign currency.
Example
A machinery seller presents documents two days after the credit's latest shipment date and the bank rejects them for discrepancy. The buyer eventually agrees to waive the point and authorises payment, but the seller waits an additional three weeks for money it had considered guaranteed.
Formula
Calculation
Total cost of an irrevocable letter of credit = issuance fee + confirmation fee + amendment and handling charges, with percentage fees applied to the credit value pro rata for the period.
An importer opens an irrevocable letter of credit for $500,000 covering a machinery shipment, valid for six months. The issuing bank charges 1% a year, and the exporter requires confirmation by its own bank at 0.6% a year. Document handling is a flat $350.
Issuance fee: $500,000 x 1% = $5,000 a year, and for six months that is $2,500.
Confirmation fee: $500,000 x 0.6% = $3,000 a year, and for six months that is $1,500.
Document handling: $350.
Total cost: $2,500 + $1,500 + $350 = $4,350, which is 0.87% of the shipment value.
Whether that is good value depends on the alternative. If the exporter would otherwise demand full payment in advance, the buyer is paying $4,350 to avoid sending $500,000 to a supplier it cannot easily sue, which most finance teams would consider cheap insurance.Case study
Seen in the real world.
This case is illustrative and entirely fictional. Merridale Textiles, an invented importer, agreed to buy $780,000 of specialist fabric from a new overseas mill that would not ship without security. Merridale opened a six-month irrevocable letter of credit confirmed by a bank in the mill's own region, at a total cost of about $7,000.
When the mill presented documents, the packing list described the goods slightly differently from the invoice, and the confirming bank refused the presentation. Because Merridale actually wanted the fabric, it waived the discrepancy in writing within two days and the payment went through, but the episode delayed settlement by a fortnight and soured the relationship.
For the next order both parties agreed the exact document wording in advance and attached a template to the credit application. In this fictional example the instrument worked as designed; the friction came entirely from imprecise paperwork, which is where letters of credit almost always go wrong.
Watch out
Common mistakes.
- Assuming the bank will pay if the goods are correct, when banks examine documents only and a compliant presentation is what triggers payment.
- Treating an unconfirmed credit as equally safe in every market, when it still depends on the issuing bank and its country's ability to transfer funds.
- Agreeing commercial terms first and drafting the credit afterwards, which produces document requirements the seller cannot realistically meet.
Questions
People also ask.
Can an irrevocable letter of credit be cancelled?
Only with the agreement of all parties, including the beneficiary and any confirming bank, which is precisely what makes it useful.
What is the difference between confirmed and irrevocable?
Irrevocable means the issuing bank's promise cannot be withdrawn, while confirmed means a second bank has added its own separate promise to pay.
Who pays the fees?
It is negotiable, but commonly the buyer pays the issuing bank's charges and the seller pays the confirmation and negotiation charges in its own country.
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