Standby documentary credit: what it is and which rules govern it
By the Vanguard Verify desk · Published 2026-10-24 · Updated 2026-11-03
Short answer: a standby documentary credit (a standby letter of credit, or SBLC) is an irrevocable, independent bank undertaking to pay the beneficiary if they present the documents the standby requires — usually a statement that the applicant has failed to perform. It is normally issued subject to ISP98 (ICC Publication 590, in force since 1 January 1999), though it can also be issued subject to UCP 600.
Why it is called “standby”
A commercial letter of credit is meant to be drawn: it is how the seller gets paid. A standby is meant to stand by. It is drawn only if something goes wrong, such as the buyer not paying or a contractor not performing. That makes it work much like a bank guarantee. For the basics see SBLC meaning and SBLC vs LC.
The three rule sets
| Rules | Designed for | Examination time | Notes |
|---|---|---|---|
| ISP98 (ICC 590) | Standby letters of credit | Notice of dishonour within 3 business days is deemed not unreasonable; beyond 7 business days is deemed unreasonable | Built for standby issues such as demands, extend-or-pay requests and closures on expiry |
| UCP 600 | Commercial documentary credits | Maximum 5 banking days | Article 1 says it applies to standbys “to the extent to which they may be applicable” |
| URDG 758 | Demand guarantees | Maximum 5 business days | Used for bank guarantees rather than standbys |
The rule set matters. For example, under UCP 600 Article 36 a bank closed by force majeure will not honour a credit that expired during the closure, while ISP98 extends the time for presentation after the place of presentation reopens. Always check which rules the standby states.
How to check a standby is real
- Ask for the full text before anything else: issuing bank, amount, expiry, place of presentation, the documents required to draw, and the governing rules (ISP98, UCP 600 or URDG 758).
- Make sure it comes bank to bank. Since SWIFT’s November 2021 Category 7 changes, standbys and guarantees are usually issued by MT760 to the beneficiary’s bank. A PDF or a screenshot is not a standby.
- Have your own bank authenticate it and confirm the issuing bank exists and is licensed.
- Read the drawing conditions. A standby you can never draw on because it needs a document you can’t obtain (for example, the applicant’s own signature) gives you no protection.
- Check the applicant company and its link to the issuing bank.
Red flags
- “Leased” or “bought” standbys offered for a fee (see leased SBLC: is it real?).
- No governing rules stated, or wording copied from templates that mixes UCP, ISP and URDG terms.
- Promises of “monetisation” or trading-programme returns.
- Pressure to send an MT799 “pre-advice” or pay fees before the MT760 is issued.
- The issuing bank cannot be contacted through its official channels.
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FAQ
Is a standby documentary credit the same as an SBLC?
Yes. Standby documentary credit, standby letter of credit and SBLC all describe the same kind of instrument: an independent bank undertaking that is drawn only if the applicant fails to perform.
Should a standby be subject to ISP98 or UCP 600?
Either is possible, but ISP98 was written specifically for standbys and covers issues UCP 600 does not. The standby text must state which rules apply, and your bank can advise which suits your deal.
Which SWIFT message issues a standby?
Usually MT760, which SWIFT restructured in November 2021 for guarantees and standby letters of credit.
What does a tender standby LC usually require?
It is normally addressed to the tendering authority as beneficiary, states the rules it is subject to (usually ISP98, or UCP 600 if the tender asks), follows the wording template in the tender documents, and is drawn against a signed demand stating the bidder failed to perform. Use the exact form in the tender and confirm it with your bank.
Can a standby documentary credit be issued by MT799?
No. MT799 is a free-format message. Standbys and guarantees are normally issued by MT760.
Vanguard Verify is run by Vanguard Trade Capital Goods Wholesalers DWC-LLC, Dubai South, Licence 14282. This answer is general information, not legal or financial advice.