On a cross-border equipment order, the payment instrument can cost more than the price difference between two suppliers. Not because letters of credit are expensive in themselves, but because a document discrepancy discovered after the vessel sails stops the payment while the goods are already on the water, and every day of that delay has a price.
This guide is written for the buyer who is asked to instruct a letter of credit and wants to know what actually governs the outcome. It is practical, not legal: the terms of your credit are a matter for your bank and your trade advisor, and this does not replace them.
Why payment terms decide as much as price
Two quotes for the same equipment can differ by a few percent on unit price and by considerably more on risk. Payment terms are where that risk sits:
- Payment before shipment puts all the risk on the buyer.
- Payment after arrival puts most of it on the supplier, and suppliers price accordingly — or decline.
- A letter of credit substitutes a bank’s undertaking for part of that risk, for both sides, at a cost in fees, time and documentation discipline.
The cost of the instrument is visible. The cost of getting the documents wrong is not, which is why the second half of this guide is about documents rather than about banking.
What a letter of credit actually is
A documentary credit is an undertaking by the issuing bank to pay the beneficiary, provided the documents presented comply with the terms of the credit. Three things follow from that definition, and all three surprise people at least once:
- It is a payment undertaking, not a quality guarantee. The bank’s obligation is to examine documents. Perfectly compliant documents can accompany unsatisfactory goods.
- It is separate from the underlying sale contract. The bank is not a party to your purchase agreement and does not adjudicate disputes about it.
- Compliance is judged on the face of the documents. If the documents are consistent with each other and with the credit’s terms, the bank pays. If they are not, it may refuse — regardless of whether the goods are fine.
That third point is the whole game. Everything below is about making the documents match.
The parties, in plain terms
- Applicant — you, the buyer. You instruct your bank to issue the credit.
- Issuing bank — your bank. It undertakes to pay.
- Beneficiary — the supplier.
- Advising bank — the supplier’s bank, which authenticates and forwards the credit.
- Confirming bank, where used — a second bank that adds its own undertaking. Worth asking about when you are dealing with a jurisdiction or a bank you would rather not rely on alone; it costs more.
The one rule: banks deal in documents, not goods
This is a principle of documentary credit practice rather than a technicality, and it explains most of what goes wrong.
A bank examining a presentation does not know whether the modules are the right model, whether the pallets were loaded correctly, or whether the equipment arrived. It knows what the papers say. If the invoice says one thing and the packing list says another, that is a discrepancy — even if the cargo is exactly right.
The practical implication for a buyer: the specification you write into the credit is the specification that has to appear, identically, on every document. Vagueness in the credit becomes discrepancy risk later.
Where solar equipment orders specifically go wrong
Generic trade failures appear here too, but equipment orders have their own recurring discrepancy list:
- Model or power class mismatch across documents. A module is sold in power classes, and the class on the invoice, the packing list and the certificate of origin has to be the same string. “550W class” in one place and a specific model number in another is a discrepancy waiting to be found.
- Partial shipment terms. Equipment orders frequently ship in more than one container. If the credit does not permit partial shipment and the shipment is partial, the presentation fails. Decide this at instruction, not after loading.
- Laytime and validity. The latest shipment date and the expiry date are different things, and the presentation period after shipment is a third. Production slips turn a comfortable credit into an expired one.
- Serial number and test documentation. Where the credit calls for flash test data or serial number listings, the format has to be specified. “Test reports” without a defined format produces whatever the supplier normally issues, which may not be what the credit describes.
- Weights and counts. A packing list that does not reconcile with the bill of lading quantities is one of the most common discrepancies in any trade, and containerised equipment with mixed pallets makes it easy to get wrong.
- Description drift between proforma and final documents. The description usually originates in the proforma invoice and then gets abbreviated somewhere in the chain. Ask for the final document set to repeat the credit’s description verbatim.
What to specify when the cargo is solar equipment
Reference table
Swipe horizontally to view all columns →
| Field | What to decide | What goes wrong if it is left vague |
|---|---|---|
| Goods description | Exact model, power class and quantity, in one string | Description drift between invoice, packing list and certificate of origin |
| Partial shipment | Permitted or not — decide before ordering | A second container invalidates the presentation |
| Latest shipment date | With realistic production and booking margin | An expired credit has to be amended, on the supplier’s terms |
| Expiry and place | Where and until when documents may be presented | Documents presented late are documents refused |
| Required documents | Named list: invoice, packing list, bill of lading, certificate of origin, and any test or inspection documents | Undefined formats produce documents the credit does not describe |
| Inspection requirement | Whether third-party inspection is required, and by whom | An unspecified inspection clause is the most common source of delay |
| Serial / test data format | Defined, if you want it | You receive whatever the supplier habitually issues |
| Amendment route | Who can amend, and how quickly | Every amendment costs fees and time on both sides |
What it costs, in non-monetary terms
Fees are quoted by your bank and vary by credit size, tenor and whether confirmation is added. The less visible costs are the ones that catch buyers out:
- Credit line consumption. A credit occupies your facility with the bank for its full tenor, which reduces headroom for everything else.
- Document handling time. The presentation has to be examined. A discrepancy and a resubmission can take longer than the voyage.
- Amendment friction. Every change to the credit has to be agreed on both sides and advised through banks. A late amendment discovered at presentation is the expensive kind.
- Internal effort. Someone has to reconcile the documents. On equipment orders with long specification lists, that is a real job.
When a letter of credit is not the right instrument
Three cases where the instrument costs more than it returns:
- Small orders. The fixed effort and fees do not scale down with the order value.
- Established relationships. Where you have traded repeatedly and both sides have performance history, a simpler term usually serves better.
- Domestic delivery. Equipment shipped from US stock settles domestically, and none of this machinery is needed. A letter of credit belongs on cross-border shipments and large first orders, not on a domestic delivery from a warehouse.
That last case is worth stating plainly, because it is where buyers sometimes over-engineer. If the equipment is already in the country and title passes on domestic terms, the cross-border document set does not exist and the credit has nothing to examine.
How this fits the rest of the import process
Payment is one step in a chain that starts with specification and ends with a container being cleared. The documents that a credit calls for are largely the same documents the customs entry and any sourcing-rules review will need, so it pays to define them once and use them consistently.
Our import checklist for US buyers covers the document set end to end; container loading and freight covers what determines how many shipments an order becomes, which is the input to the partial shipment question above. If you are still at the qualification stage, qualifying a supplier is the step before any of this, and payment terms are one of the items covered in what moves solar equipment pricing.
We supply the equipment and issue the commercial documents that go with the order — invoice and packing list, plus the agreed available test data and applicable certificates — and the requested document descriptions and scope must be reviewed and agreed before production. We do not set your banking terms and we are not a party to your credit; those sit with your bank and your trade advisor.
BUYER CHECKLIST
Buyer considerations for this scope
Write one goods description and repeat it verbatim
Description drift between the proforma invoice, the commercial invoice, the packing list and the certificate of origin is the most common discrepancy on equipment orders. Define the exact model, power class and quantity as a single string, and require every document to repeat it.
Decide partial shipment before you order
Equipment frequently ships in more than one container. If the credit does not permit partial shipment and the shipment turns out to be partial, the presentation fails and the only remedy is an amendment agreed on both sides.
Define document formats, not just document names
Asking for "test reports" or "inspection certificates" without specifying the format produces whatever the supplier habitually issues, which may not match what the credit describes. Name the format, and share the credit terms before production rather than after shipment.
PRACTICAL ANSWERS
Questions buyers ask about this
Does a letter of credit guarantee the equipment is correct?
No. It is a payment undertaking from the issuing bank, conditional on the documents complying with the credit's terms — not a quality guarantee. Compliant documents can accompany unsatisfactory goods. If you want assurance about the equipment itself, that comes from inspection and testing requirements written into the credit, not from the credit alone.
What is a discrepancy, and why does it matter?
A discrepancy is any inconsistency between the presented documents and the terms of the credit, or between the documents themselves. Because banks examine documents rather than goods, a discrepancy can stop payment even when the cargo is exactly right. It is the single most common cause of delay on documentary credit transactions.
Should I allow partial shipment?
It depends on whether the order fits in one shipment. Equipment orders frequently ship in more than one container, and if the credit does not permit partial shipment a second container invalidates the presentation. Decide at instruction — after loading, it can only be fixed by an amendment, on the supplier's terms.
Do I need a letter of credit for equipment shipped from US stock?
No. Equipment already in the country settles on domestic terms, and there is no cross-border document set for a credit to examine. Documentary credits belong on cross-border shipments and large first-time orders; on a domestic delivery they add cost and delay without adding protection.
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