The Asian Development Bank's latest survey, released in January 2026, puts the global trade finance gap at $2.5 trillion — roughly 10% of world trade asked banks for backing and didn't get it, per Global Trade Review's coverage. At the centre of that market sits the letter of credit: still the most trusted way for an exporter to get paid by a buyer it has never met. Fed economists mapping SWIFT flows found LCs settle about 13% of world trade — $2.3 trillion, per Schmidt-Eisenlohr's research.
The bargain is simple and brutal. A bank promises payment; you promise perfect paper. Get the paper wrong and the promise dissolves — which is what happens to 60–75% of document sets on first presentation. Below: the letter of credit process end to end — parties, types, UCP 600 rules, real 2026 costs, and the discrepancies that kill payment.
The 30-second version
- An LC is an irrevocable bank undertaking to pay against complying documents — banks deal in paper, never goods (UCP 600 Articles 4–5).
- Cash-flow deciders: sight (paid on complying presentation), usance (paid 30–180 days later), confirmed (second bank adds its own guarantee).
- UCP 600's 39 articles govern LCs in 175 countries; banks get max 5 banking days to examine documents.
- 60–75% of presentations are refused first time; each discrepancy costs $75–150 in fees plus days of delay.
- LCs themselves are safe — default rates below 0.3% per the 2025 ICC Trade Register. Exporters lose on paperwork, not product risk.
What is a letter of credit?
A letter of credit is an irrevocable undertaking by the buyer's bank to pay the exporter a fixed sum once the exporter presents documents that comply exactly with the credit's terms within its validity period. The bank's creditworthiness replaces the buyer's.
That is the letter of credit meaning in one line: documents in, money out. Under UCP 600 Article 3, a credit is deemed irrevocable even if it doesn't say so — the issuing bank cannot cancel or amend it without the beneficiary's consent. Article 4 separates the credit from the sale contract. Article 5 is the principle to memorise:
"Banks deal with documents and not with goods, services or performance to which the documents may relate." — UCP 600, Article 5
Five parties appear in a typical transaction: the applicant (your buyer), the issuing bank (buyer's bank), the advising bank (a bank in your country that authenticates the credit), the beneficiary (you), plus — where requested — a confirming bank adding its own payment undertaking.
How does the letter of credit process work?
Ten steps:
- Sales contract fixes LC as the payment method, plus the incoterm, documents, and shipment dates (see our Incoterms 2020 guide).
- Buyer applies to its bank to issue the credit.
- Issuing bank sends the LC — usually a SWIFT MT700 message — to an advising bank in the exporter's country.
- Advising bank authenticates it and advises the exporter.
- Exporter vets the draft against the contract, production timeline and vessel schedule — and demands amendments now, before shipping anything.
- Exporter ships and collects the transport document (see how a bill of lading works).
- Exporter presents the document set within the presentation period — default 21 calendar days after shipment under UCP 600, never later than expiry.
- Each bank examines the documents, capped at 5 banking days per bank under Article 14(b).
- Complying presentation: the issuing bank must honour (Article 15). Discrepant: it sends a single refusal notice listing every discrepancy, no later than the close of the fifth banking day (Article 16).
- Buyer takes the documents, clears the goods; you get paid — at sight, or at usance maturity.
Types of letter of credit: sight, usance, confirmed
All types of letter of credit answer two questions: when do you get paid, and whose promise are you relying on?
| Type | What it means | When exporters use it |
|---|---|---|
| Sight LC | Bank pays on complying presentation, typically within days | Default choice — fastest cash |
| Usance / deferred LC | Bank pays 30, 60, 90 or 180 days after shipment or presentation | Buyer needs credit; you can discount the accepted draft for early cash |
| Confirmed LC | A bank in your country adds its own undertaking on top of the issuer's | Weak issuing bank or high country risk |
| Unconfirmed LC | Only the issuing bank's promise stands | Strong bank, stable market |
| Transferable LC | Beneficiary can pass part of the credit to its own supplier | Trading houses and merchant exporters |
| Revolving LC | Reinstates automatically for repeat shipments | Regular schedules with one buyer |
| Standby LC | Safety net drawn only on default — works like a guarantee | Backstop behind open-account terms |
| Back-to-back LC | Second LC issued against the security of the first | Middlemen who must pay suppliers before collection |
Confirmation is worth modelling early: 40–95 basis points of LC value in current market conditions, per Financely's fee guide. Exporters selling into markets with shaky banks quote a confirmed sight LC from the first offer and price the fee into the goods — cheaper than learning after shipment that the issuer's promise is worth little.
UCP 600: the rulebook behind every LC
UCP 600 — the ICC's Uniform Customs and Practice for Documentary Credits, 2007 revision — is the standard almost every LC is issued under. Its 39 articles apply across 175 countries and govern around $1 trillion of trade a year, per Trade Finance Global. Two companions matter in 2026: ISBP 821, the document-examination handbook, and eUCP 2.1 for electronic presentations — both current since July 2023, per the ICC Academy.
The articles that decide outcomes: Article 3 (irrevocable by default), Articles 4–5 (documents, not goods), Article 14(b) (5-banking-day examination cap), Article 15 (complying presentation must be honoured) and Article 16 (one refusal notice, all discrepancies listed, or the bank loses the right to refuse).
Which discrepancies kill LC payment?
The document errors that most often kill LC payment are late presentation, a goods description that doesn't match the credit word for word, inconsistent quantities or amounts across documents, missing signatures or endorsements, and shipment after the latest date allowed. An estimated 60–75% of presentations are refused first time, per discrepancy-rate analysis — a figure that has barely moved since UCP 600 took effect.
Refusal rarely means non-payment. It means delay, a $75–150 discrepancy fee per presentation, and lost negotiating power — some buyers use discrepancies as leverage to reprice goods already on the water. The 2025 ICC Trade Register, built on 47 million transactions and $23 trillion of exposures, still shows default rates below 0.3%, per Documentary Credit World. The instrument works. Presentations fail.
An LC never pays you for shipping goods. It pays you for presenting paper that matches.
Working exporters manage this mechanically. Once a bank accepts a document set under an LC, the format is frozen — the next shipment changes only numbers and dates. The goods description is copied character for character from the credit, typos included. The draft LC is checked against real production and vessel schedules before acceptance: an amendment costs about $45; late presentation costs the credit's protection entirely. Our export documentation guide covers the full document file behind this.
What does an LC cost in 2026?
2025-26 market ranges from Financely: issuance 65–120 bp annualised (buyer's side), confirmation 40–95 bp, advising $35–75 flat, document examination $25–50 per presentation, amendments about $45, discrepancy fees $75–150. On a $100,000 confirmed usance shipment, bank costs of $1,000–2,000 are normal — why many exporters reserve LCs for new buyers and risky markets, then graduate proven relationships to cheaper terms.
Access is the harder constraint. The ADB survey found SME rejection rates of 41%, barely better than 45% in 2023 — and the gap has sat at $2.5 trillion since the 2022 jump ADB documented. India's exporters moved $441.74 billion of merchandise in FY2025-26, per Ministry of Commerce figures; for first-time exporters, an LC line often decides whether a new-market order is bankable.
How ShipScout helps before the LC stage
An LC protects payment on the order you already have. ShipScout works one step earlier, helping exporters find and vet the buyers worth extending terms to:
- Find real buyers by product or HS code across 11B+ shipment records covering 240+ countries, ranked by volume, starting from the company directory.
- Vet the buyer before you negotiate payment terms. Shipment history shows whether a prospect genuinely imports your product, how often, at what scale — the homework our counterparty verification guide applies in reverse. Steady multi-year importers may merit usance terms; an unknown name justifies a confirmed sight LC.
- Prioritise markets with data, then run the outreach sequence from our find-buyers playbook, with contact intelligence where available.
Strong paper protects the deal; better buyer data wins it on better terms. Start a free trial and check a buyer's real shipment history before you quote payment terms.
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