Category 9: Cash management and customer status
MT935 Rate Change Advice
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The MT935 advises interest rate changes. The sender, usually the account servicing bank, uses it to tell the receiver about a change in a general rate, such as its base or prime rate, or in the rate on specific accounts it services for the receiver, other than call and notice loan or deposit accounts.
What MT935 is used for
Each of the one to ten repetitions covers either a type of rate (field 23, with codes BASE, CALL, COMMERCIAL, CURRENT, DEPOSIT, NOTICE or PRIME after the currency) or one account (field 25), never both. Field 30 gives the effective date and field 37H the new rate, marked C for a credit rate or D for a debit rate; 37H may repeat when several rates change.
For NOTICE, the number of days’ notice can be given between the currency and the code, for example EUR07NOTICE.
- Sent by
- The bank that sets or applies the rate, usually the account servicer
- Sent to
- The account owner or correspondent
MT935 format: sequences and fields
Message headerMandatory
| Tag | Name | Status | Format | Meaning |
|---|---|---|---|---|
| 20 | Transaction Reference Number | M | 16x | The sender’s reference for the advice. |
Rate change detailsMandatory, repeatable
Appears at least once and at most ten times. Field 23 or field 25 must be present, but not both.
| Tag | Name | Status | Format | Meaning |
|---|---|---|---|---|
| 23 | Further Identification | C | 16x | Type of rate when the change is not tied to an account: currency, optional number of days (NOTICE only) and a code such as BASE or PRIME. |
| 25 | Account Identification | C | 35x | The account whose rate changes, when the change is account specific. |
| 30 | Effective Date of New Rate | M | 6!n | Date from which the new rate applies (YYMMDD). |
| 37H | New Interest RateRepeatable | M | 1!a[N]12d | C for a credit rate or D for a debit rate, N for a negative rate, then the rate with a decimal comma. |
Message trailerOptional
Field 72 follows the repetitive part.
| Tag | Name | Status | Format | Meaning |
|---|---|---|---|---|
| 72 | Sender to Receiver Information | O | 6*35x | Additional information, with bilaterally agreed codes in the /code/ form. |
Format notation: n digits, a upper-case letters, c upper-case letters and digits, x any character of the Swift character set, d a decimal number with a comma, ! fixed length, [ ] optional, 4*35x up to 4 lines of 35 characters. M mandatory, O optional, C conditional (a rule decides).
MT935 in ISO 20022
Swift’s CBPR+ roadmap, as presented in a Citi client webinar (September 2025), maps the MT935 to camt.053.
All MT messages · Category 9 messages · ISO 20022 messages · Codes · Troubleshooting