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The L/C in one paragraph
A letter of credit (L/C) is a payment commitment issued by the buyer's bank: it promises to pay the seller once the seller presents documents that exactly match the conditions written into the credit — typically the commercial invoice, packing list, and bill of lading. The buyer's money moves only against proof of shipment; the seller's payment is certain by a bank rather than a stranger's goodwill. Trust is replaced by document compliance.
That design makes the L/C the heavyweight tool of international payments — powerful for large orders and new relationships, over-engineered for a $3,000 sample run. Knowing where the line sits is most of the skill.
How an L/C works, step by step
1. The contract names L/C terms
Buyer and seller agree the price, the documents required, latest shipment date, and L/C type — before any bank is involved.
2. Buyer applies to the issuing bank
Your bank issues the credit against your funds or credit line. Every word you put in it becomes a payment condition.
3. The credit is advised to the seller
A bank in China notifies the seller the L/C exists and confirms its authenticity. The seller checks the terms are achievable — or requests amendments now, not later.
4. Production and shipment
The seller produces and ships within the credit's dates, collecting the exact documents the L/C demands along the way.
5. Documents are presented
The seller submits the document set through their bank. This — not the cargo — is what gets examined.
6. Banks check compliance
Bankers compare documents to the credit word by word. Clean presentation → payment proceeds. Any mismatch is a discrepancy that can delay or block payment.
7. Payment — at sight or deferred
At sight, funds release within days of compliant documents; under usance terms, at the agreed later date. You collect the documents and, with the bill of lading, the right to your goods.
The principle that surprises everyone: banks pay against documents, not goods. A container of defective products with perfect paperwork gets paid; perfect products with a misspelled invoice can be refused. The L/C protects against non-shipment — quality protection has to be engineered in (see below).
The types that matter
| Type | What it means | When it's used |
|---|---|---|
| Irrevocable | Cannot be changed without all parties agreeing — the standard; assume all L/Cs are irrevocable under current rules. | Effectively always. |
| At sight | Pays shortly after compliant documents are presented. | The common form in China trade — sellers get funds fast. |
| Usance (deferred) | Pays 30–90+ days after presentation. | Buyers financing inventory from sales; sellers who accept the wait. |
| Confirmed | A second bank adds its own payment commitment. | When the seller doubts the issuing bank or its country. |
| Transferable | The beneficiary can pass part of the credit to their own supplier. | Trading companies sitting between you and a factory. |
| Standby | A backup commitment: it pays only if the other party fails to perform — closer to a bank commitment than a payment method. | Securing obligations behind open-account or installment deals. |
What it really costs
| Factor | Letter of credit | T/T wire transfer |
|---|---|---|
| Bank cost | Commonly ~0.5%–1.5% of invoice value all-in (issuance, advising, amendments, discrepancy fees). | Roughly $20–50 per transfer. |
| Buyer's main risk | Paying for compliant paper on non-compliant goods — mitigated by inspection documents. | Deposit paid before goods exist; leverage gone after balance payment. |
| Seller's main risk | Discrepancy delays; bank bureaucracy. | Shipping before balance is received. |
| Speed & effort | Slow to set up; document precision required. | Days; minimal paperwork. |
| Chinese supplier acceptance | Reserved for larger orders; often refused for small ones. | Universal — the 30/70 deposit-balance norm. |
| Sweet spot | Large orders, new relationships, higher-risk situations. | Everyday orders with verified suppliers. |
The full landscape of deposit structures, escrow, and platform protections is covered in Payment Methods & Terms Explained.
Making an L/C protect quality, not just shipment
Since banks check documents, the buyer's smartest move is choosing which documents the credit demands. Add an independent inspection certificate — issued after a pre-shipment inspection — to the required document set, and the seller cannot get paid until a third party has physically checked the goods against your specifications. One line in the credit converts a payment instrument into a quality gate.
- Name the inspection company and the standard (e.g., your spec sheet, AQL level) in the credit.
- Match every company name, address, and product description to the contract exactly — discrepancies cut both ways.
- Keep dates realistic: production plus inspection plus documents must fit inside the credit's shipment and expiry dates.
L/C orders with a China-side partner
An L/C's protection is only as good as the physical steps behind the paper. LIFA coordinates those from China: verifying the supplier before the credit is issued, arranging the inspection your credit requires, and checking the shipping documents against the credit's wording before presentation — so compliant paper and compliant goods arrive together.
Mistakes this guide prevents
- Using an L/C as a quality proof. It isn't one — unless you write an inspection certificate into it.
- Copy-pasting contract text into the credit carelessly. Every typo becomes a payment condition.
- Forcing an L/C on a small order. The fees eat the margin and many suppliers simply refuse; a structured T/T with verification is usually saner.
- Ignoring the expiry mathematics. Late production plus a strict latest-shipment date is how good orders die in discrepancy.
Related guides in the payments library.
Continue through payment security and the order steps around it.
Payment Methods & Terms
T/T, deposits, escrow, Trade Assurance — the full payments landscape.
Read the guide 🏷️Invoice & Packing List
The documents your L/C will live or die on, decoded.
Read the guide 🔬Pre-Shipment Inspection
The inspection that turns an L/C into a quality gate.
Read the guide 📚Knowledge Center Hub
All fourteen categories of the trade library in one map.
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Letters of credit, answered simply.
The questions importers ask most about L/C payments.
A letter of credit (L/C) is a bank payment commitment: the buyer's bank promises to pay the seller once the seller presents documents that exactly match the conditions written in the credit — typically the commercial invoice, packing list, and bill of lading. It replaces trust between trading partners with the banking system's document check.
It protects against non-shipment: the seller only gets paid after presenting documents proving the goods were shipped as specified. It does not by itself prove quality — banks check documents, not cargo. Buyers can strengthen it by requiring an independent inspection certificate among the L/C documents.
Bank charges commonly run around 0.5%–1.5% of the invoice value once issuance, advising, amendment, and discrepancy fees are counted — often a four-figure total on a six-figure order, versus roughly $20–50 for a simple wire transfer. That premium buys payment security, which is why L/Cs suit larger orders.
An L/C at sight pays the seller shortly after compliant documents are presented — common in China trade because exporters get funds fast. A usance (deferred) L/C pays after an agreed period, such as 30–90 days, giving the buyer breathing room to receive and even sell goods before paying.
For small and mid-size orders, T/T with a deposit-balance structure is the market norm — cheap, fast, and accepted everywhere. L/Cs earn their cost on large orders, new supplier relationships, or high-risk situations where the downside of non-shipment far exceeds the banking fees. Many Chinese suppliers resist L/Cs on small orders because of the paperwork burden.
A discrepancy is any mismatch between the presented documents and the L/C's exact wording — a misspelled company name, a late shipment date, an amount that differs by a cent. Banks can refuse or delay payment over discrepancies, so precise document preparation matters as much as the credit itself.
Structuring a large order payment with a Chinese supplier?
Send the order details and proposed terms. LIFA helps from China with supplier verification before the credit is issued, the inspection your documents require, and a China-side check that the paperwork matches the shipment — before the bank sees either.
