ISP98 vs UCP 600: Which Rules Apply to Your Credit?
ISP98 vs UCP 600 compared for standby and documentary credits: scope, examination time, expiry on a closed day, partial drawings, transfer and when to choose each.
3 min readUpdated 2026-10-13Written by LCCheck team
Short answer
UCP 600 is written for documentary credits that pay for shipments; ISP98 is written for standby credits that pay on default. A credit follows whichever rules it states, usually in MT700 field 40E or the standby's text. ISP98 handles demands, expiry, automatic extension and closures of the bank better for standbys, while UCP 600 covers transport, insurance and invoice documents.
In this guide
| UCP 600 for | Documentary credits |
|---|---|
| ISP98 for | Standby credits |
| Both from | ICC (ISP98 with IIBLP) |
| Which applies | Whatever the credit states |
Comparison
This summary is in our own words; the ICC publishes the official texts. Exact rule wording should be confirmed in the publications themselves.
| Topic | UCP 600 | ISP98 |
|---|---|---|
| Designed for | Documentary credits for trade | Standby credits |
| Examination time | Up to 5 banking days | Notice of refusal within a reasonable time; over 7 business days is unreasonable |
| Expiry on a closed day | Extended to the next banking day | Extended 30 days if the bank is closed for force majeure-type reasons |
| Transport and insurance documents | Detailed rules | Not covered |
| Demand documents | Little guidance | Detailed rules on demands and statements |
| Force majeure | Bank not liable; credit may expire | Expiry extended 30 days after reopening |
| Transfer | Article 38 transferable credits | Detailed transfer by operation of law rules |
Why rules matter in a dispute
The rules fill gaps the credit does not address. If a standby subject to UCP 600 expires while the bank is closed because of a disruption, the beneficiary may lose its right to draw; under ISP98 the period is extended. If a documentary credit is wrongly made subject to ISP98, there is no rule set for examining a bill of lading. Choosing the right rules is part of drafting a workable credit. See UCP 600 explained and how an SBLC works.
How to tell which applies
In an MT700, field 40E states the rules, such as UCP LATEST VERSION or ISP LATEST VERSION. In an MT760 or a standby letter, the rules usually appear in the text. If no rules are stated, the governing law decides, which creates uncertainty. Ask for the rules to be stated explicitly. Compare instruments in SBLC vs letter of credit and the standby overview.
Practical differences for each party
For a beneficiary, ISP98 is usually friendlier on timing. If the bank's place of presentation is closed on the last day, the beneficiary is not left without protection. ISP98 also sets out what a demand must contain and how banks treat statements, which reduces arguments about wording. Under UCP 600, a standby is examined by rules mainly written for shipping documents, and some of them simply do not fit.
For an applicant, the choice affects how strictly a demand is examined and how long the standby stays open. Automatic extension clauses are common in standbys, and ISP98 provides rules for notice of non-extension. Under UCP 600 those clauses rely only on the credit's own wording.
For banks, using the rule set designed for the instrument reduces disputes. That is why many banks issue documentary credits under UCP 600 and standbys under ISP98 by default, and demand guarantees under URDG 758. When a draft arrives with unexpected rules, ask why before accepting it.
- Payment for shipments against shipping documents: UCP 600.
- Backstop for open-account payment or a loan: ISP98.
- Performance or advance-payment guarantee outside the US: often URDG 758.
Questions
Which rules should a new exporter ask for?
For a documentary credit paying for shipments, ask for UCP 600. If the buyer offers a standby as security for open-account terms instead, ISP98 is the usual choice. Ask your bank to confirm before agreeing the contract.
Can the rules be changed after issuance?
Only by an amendment that the beneficiary accepts. It is far easier to agree the rules in the contract and check them in the draft.
Can a standby be issued under UCP 600?
Yes, UCP 600 says it applies to standbys to the extent applicable. Many banks prefer ISP98 because it was written for standbys.
What about URDG 758?
URDG 758 is the ICC's rule set for demand guarantees. It is common outside the US for performance and advance-payment guarantees.
Does ISBP 821 apply to standbys?
ISBP 821 explains banking practice for UCP 600 documentary credits. Standby practice relies on ISP98 itself.
Sources
- ICC — ISP98, International Standby Practices
- ICC — UCP 600, Uniform Customs and Practice for Documentary Credits
- ICC — URDG 758, Uniform Rules for Demand Guarantees
- ICC Academy — trade finance learning
General guidance, not legal advice. Rules are explained in our own words; read the official ICC and Swift texts for exact wording. Your bank examines documents independently.
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