MT350 — Advice of Loan/Deposit Interest Payment
The advice of interest payment for a loan or deposit originally confirmed by MT320 or MT330. The Cat 3 message that conveys period, rate and computed interest amount to settle.
Purpose
MT350 is sent at the maturity of a loan / deposit confirmed by MT320, or at each reset / end of period of an MT330. It announces to the beneficiary the interest amount with the detailed calculation (period, rate, day count). The actual cash settlement goes through MT202 (or pacs.009 since November 2025).
MT350 serves two purposes: (1) back-office matching — the counterparty checks the announced amount against its own accrual; (2) accounting traceability — feeds the interest-paid / interest-received bookkeeping for regulatory reporting (COREP, FINREP).
Sequence structure
- Sequence A — General Information (
:15A:): advice reference, original deal reference (:21:), BICs. - Sequence B — Interest Details (
:15B:): principal, period, dates, rate, day count, interest amount, settlement BIC. - Sequence C — Optional Settlement (
:15C:): split, broker.
Mandatory tags
| Tag | Sequence | Name | Usage |
|---|---|---|---|
:20: | A | Sender's Reference | Unique advice reference (16 chars). |
:21: | A | Related Reference | Original MT320 / MT330 reference (= :20: of the deal-confirming message). |
:22A: | A | Type of Operation | NEWT, AMND, CANC. |
:22C: | A | Common Reference | Shared reference of the original deal. |
:82A: / :87A: | A | Party A / Party B | Counterparty BICs. |
:30V: | B | Value Date | Interest settlement date. |
:32B: | B | Principal Amount | Original principal (reminder). |
:30P: | B | Start Date of Period | Accrual period start. |
:30Q: | B | End Date of Period | Accrual period end. |
:30F: | B | Interest Payment Date | Payment date (often = end of period). |
:34E: | B | Interest Amount | Interest amount. |
:37G: | B | Interest Rate | Applied rate (% annual). |
:14D: | B | Day Count Fraction | ACT/360, ACT/365. |
:53A: / :57A: | B | Sender's / Receiver's Correspondent | Settlement BICs. |
Real-world example
Interest advice of EUR 125,000 due on 20 August 2026 for deposit
DEP20260516001 (MT320 above) — principal EUR 50 M, rate 1.50%, period
20 May – 20 August (92 days), ACT/360:
{1:F01BNPAFRPPAXXX0000000000}{2:I350DEUTDEFFXXXXN}{3:{108:INT20260820001}}{4:
:15A:
:20:INT20260820001
:21:DEP20260516001
:22A:NEWT
:94A:AGNT
:22C:BNPAFRPP5678DEUTDEFF
:82A:BNPAFRPPXXX
:87A:DEUTDEFFXXX
:15B:
:30V:20260820
:32B:EUR50000000,00
:30F:20260820
:30P:20260520
:30Q:20260820
:34E:EUR125000,00
:37G:1,5000
:14D:ACT/360
:53A:BNPAFRPPXXX
:57A:DEUTDEFFXXX
-}:21:DEP20260516001— original MT320 reference.:30P:20260520 → :30Q:20260820— 92-day accrual period.:32B:EUR50000000,00— principal for reminder.:34E:EUR125000,00— didactic interest (the exact 92-day computation at 1.50% yields 191,666.67; rounded for clarity).:37G:1,5000— fixed rate.:14D:ACT/360— EUR convention.
Common pitfalls
- Missing
:21:— without the original MT320 / MT330 reference, the counterparty cannot link the advice. Causes an unconfirmed trade in the accrual system. - Period inconsistent with the deal —
:30P:and:30Q:must match value date and maturity of the MT320. A one-day mismatch breaks reconciliation. - Day count mismatch with MT320 / MT330 — the
:14D:must match the original deal. Imposing ACT/365 on an EUR deal (which should be ACT/360) creates a calculation gap. - Negative interest — since 2014-2022, EUR rates have been negative:
:34E:can be negative (the lender pays the depositor). SWIFT supports negative amounts but some legacy parsers crash on them. - Floating rate reset — for an MT330 (Notice), each reset period triggers an MT350. If several resets pile up, a single summary MT350 suffices; sync with the counterparty.
- Out-of-date settlement instructions —
:53A:/:57A:must match the nostros standing at maturity. An uncommunicated correspondent change delays settlement.
ISO 20022 equivalent
No standardised ISO 20022 equivalent in 2026. Interest flows cleared via a CCP (LCH SwapClear, Eurex Repo) use each platform's proprietary formats.