Short answer
A letter of credit (LC) is a payment method: the bank pays the seller when compliant shipping documents are presented. A standby letter of credit (SBLC) and a bank guarantee are safety nets: the bank pays only if its customer defaults, against a demand. SBLCs and demand guarantees work in much the same way; they differ mainly in rules (ISP98 vs URDG 758) and market practice.
Key points
- An LC is expected to be used; an SBLC or bank guarantee is expected not to be.
- An LC pays against shipping and commercial documents; an SBLC or demand guarantee pays against a demand and, usually, a statement of default.
- LCs usually follow UCP 600, SBLCs ISP98, demand guarantees URDG 758.
- LCs are issued by SWIFT MT700; SBLCs and guarantees by MT760.
- The choice depends on what risk must be covered, what the counterparty accepts and what the local market and law expect.
What is the difference between an LC, an SBLC and a bank guarantee?
All three are bank undertakings issued at a customer’s request in favour of a third party, and all three are independent of the underlying contract. The difference lies in what they are for and what triggers payment.
- A letter of credit (documentary credit) is how the seller gets paid in the normal course of the transaction, against documents showing that the goods have been shipped.
- A standby letter of credit is a back-up: it pays only if the applicant fails to pay or perform.
- A bank guarantee, in its independent (demand) form, plays the same back-up role, under a different set of rules and legal traditions.
Each instrument has its own detailed guide: letter of credit, standby letter of credit and bank guarantee.
LC vs SBLC vs bank guarantee: comparison table
| Letter of credit | Standby letter of credit | Demand guarantee | |
|---|---|---|---|
| Main purpose | Payment for goods or services | Security against non-payment or non-performance | Security against non-performance or non-payment |
| Expected to be drawn? | Yes, in the normal course | No, only on default | No, only on default |
| What triggers payment | Compliant commercial and transport documents (invoice, bill of lading, certificates) | Demand, usually with a statement of default, plus any documents listed | Demand with a supporting statement of breach (under URDG 758), plus any documents listed |
| Usual ICC rules | UCP 600 (eUCP for electronic presentation) | ISP98; sometimes UCP 600 or URDG 758 | URDG 758 |
| Examination time | Up to five banking days following presentation | Under ISP98, notice of dishonour within a time not unreasonable (three to seven business days) | Up to five business days following presentation |
| SWIFT issuance message | MT700 (MT707 to amend) | MT760 (MT767 to amend) | MT760 (MT767 to amend) |
| Typical users | Importers and exporters of goods | Open-account suppliers, lessors, lenders, project parties; frequent in US practice | Contractors, public tenders, project finance; frequent in Europe, the Middle East and Africa |
| Main risk for the applicant | Paying against compliant documents even if the goods disappoint | A demand presented without a real default | A demand presented without a real breach |
Letter of credit vs SBLC: payment method or safety net?
With a commercial LC, the seller ships and presents documents; the bank pays. The LC is the payment route itself. The seller is protected against the buyer’s refusal or inability to pay, provided its documents comply.
With an SBLC, the buyer pays the seller directly, for example by bank transfer on open-account terms. The standby sits in the background and is drawn only if an invoice remains unpaid. For repeat flows between parties who trust each other, a single standby can be simpler than issuing an LC for every shipment, and the document work only arises if something goes wrong.
Example (illustrative): an exporter of packaging sells monthly to a buyer in Cameroon. For a first, large shipment the exporter asks for a confirmed sight LC. After a year of regular trade, the parties move to 60-day open account backed by a standby for an amount covering roughly two months of deliveries.
SBLC vs bank guarantee: how close are they?
Functionally, a standby and a demand guarantee are very close: both are independent, both pay against a demand, both secure someone else’s obligation. The differences are practical:
- Rules. ISP98 and URDG 758 differ on points such as the supporting statement, examination time, the treatment of originals and what happens when the place of presentation is closed.
- Tradition. Standbys grew in US practice, where banks were historically restricted from issuing guarantees. Demand guarantees are the norm in many European, Middle Eastern and African markets.
- Beneficiary requirements. Public tenders often specify the exact form, sometimes a local bank guarantee under local law. In that case the format is not really a choice.
An accessory guarantee (surety) is different from both: the guarantor can raise the debtor’s defences, and the beneficiary must establish the debt.
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Discuss your transactionHow do you choose the right instrument?
Start with these questions:
- What risk needs covering? Payment for a shipment (LC), payment over an ongoing relationship (SBLC or payment guarantee), or performance of a contract (performance guarantee or standby).
- What does the counterparty or tender require? If a form is imposed, follow it and negotiate the wording, not the type.
- Where is the beneficiary? Local law and practice may require a local guarantee issued against a counter-guarantee.
- Who controls the documents? Under an LC the seller controls compliance; under a demand instrument the beneficiary largely controls the trigger, so wording protections matter more for the applicant.
- What can the applicant’s bank support? Every instrument uses credit capacity or collateral. The bank’s appetite for the country, tenor and wording often decides the format.
Example (illustrative): an engineering firm bidding for a public contract in Côte d’Ivoire must provide a bid bond, then a performance guarantee and an advance payment guarantee, all in a form imposed by the tender. A standby or an LC would not be accepted, so the work is on the wording and on arranging a local guarantee.
Can the instruments be combined?
Yes, and they often are. A supply contract may combine an advance payment guarantee given by the seller, an LC opened by the buyer for the balance, and a warranty guarantee after delivery. A trader may receive a transferable LC from its buyer and issue a back-to-back LC to its supplier. A lender may extend a facility secured by a standby issued in its favour by another bank. Each instrument covers a different risk at a different stage.
Common misconceptions
- “An SBLC is cash.” It is a contingent undertaking tied to a specific obligation and beneficiary, not a transferable asset with a market value.
- “An MT760 means funds are available.” An MT760 carries the terms of a guarantee or standby. It is not a payment and does not move money.
- “A bank guarantee can be rented.” Banks issue guarantees for their own customers’ obligations after credit approval. The SEC warns that “prime bank” schemes often feature standby letters of credit and bank guarantees; see our guide to leased SBLC and bank guarantee offers.
How Star Alliance helps you choose
Star Alliance Consulting reviews the transaction and the counterparty’s requirements, recommends which instrument fits, prepares the file and proposed wording, and coordinates with the parties and the issuing institutions. The bank makes the final decision on issuance. You can describe your transaction to start.
Frequently asked questions
Is an SBLC better than a bank guarantee?
Neither is better in general. They do the same job under different rules. The right choice is the one the beneficiary accepts and the applicant’s bank is willing to issue, with wording that is fair to both sides.
Can a letter of credit replace a performance guarantee?
No. A commercial LC secures payment to the seller. A performance guarantee secures the buyer against the seller’s failure to perform. They protect opposite parties.
Which is cheaper: an LC, an SBLC or a bank guarantee?
It depends on the applicant’s credit, collateral, amount, tenor, country and wording, not on the label. LCs also involve document examination and other transaction fees. See our guide to costs.
Are SBLCs and bank guarantees issued by the same SWIFT message?
Yes. Both are issued by MT760 and amended by MT767. Commercial letters of credit use MT700 and MT707.
Sources
Star Alliance Consulting editorial team · Updated 31 October 2026