SWIFT comparison · Messages
MT759 vs MT799: What Is the Difference?
The correct question is not “which MT is more powerful?” but what message was actually sent, through whose authenticated channel, and whether a separate operative undertaking exists.
| Question | MT759 | MT799 |
|---|---|---|
| General function | Structured ancillary trade-finance message family. | Free-format trade-finance information message. |
| Does the MT label alone issue an SBLC or guarantee? | No. | No. |
| Can it communicate transaction-related information? | Yes, within its defined use. | Yes, depending on text and agreed context. |
| Does a screenshot prove receipt or a commitment? | No; bank-channel checks are needed. | No; bank-channel checks are needed. |
| What else matters? | The complete message, applicable standard, participating banks and any operative instrument. | The complete text, participating banks and the actual legal obligations, if any. |
Illustrative mistake
Someone shows a document titled “MT799 proof of funds” and says the money has been blocked for you. That statement cannot be confirmed from a title alone. Ask your own bank whether it has received any relevant communication and what, if anything, it establishes. Never assume that an MT799 substitutes for an actual issued undertaking, available funds or a lender's decision.
One-line ruleA message type is not a credit approval, bank guarantee or payment certificate.
Actual Category 7 message usage is governed by SWIFT's current standards and bank operations. A private “MT799/MT759 procedure” is not itself an official industry rule.