What is an MT103?
SWIFT message, fields and example.

An MT103 is the legacy SWIFT FIN format for a single customer credit transfer. It records the sender, beneficiary, amount, currency, charges, and UETR in field 121. Since November 2025, banks exchange pacs.008 instructions for CBPR+ cross-border payments, while an MT103-format confirmation can still be the bank's customer-facing record.

In banking, MT103 names the legacy SWIFT FIN format for a single customer credit transfer. It carries the sender, beneficiary, amount, currency, charges, remittance information, and the UETR in field 121. Since the CBPR+ coexistence period ended in November 2025, banks exchange pacs.008 instructions for CBPR+ cross-border payments while some customer confirmations still use the MT103 layout.

An MT103 is the legacy SWIFT FIN format for a single customer credit transfer. It records the sender, beneficiary, amount, currency, charges, and UETR in field 121. Since November 2025, banks exchange pacs.008 instructions for CBPR+ cross-border payments, while an MT103-format confirmation can still be the bank's customer-facing record.

An MT103 SWIFT message is one of the standard FIN message types in the SWIFT MT catalogue. The number 103 identifies it as a single customer credit transfer. The message is composed of header blocks (basic, application, user) and a text block with up to 28 fields including ordering customer (50), beneficiary (59), amount (32A), and the UETR (121).

An MT103 SWIFT confirmation is a printout (PDF or paper) that purports to reproduce the sending bank's own record of the payment instruction it released; a genuine copy is one obtained directly from the bank. Since the CBPR+ migration completed in November 2025, banks have exchanged pacs.008 instructions for CBPR+ cross-border payments, so a confirmation issued in the MT103 layout is that customer-facing record rather than the message that travelled between the banks. It shows every field, including the UETR. A beneficiary or counterparty may ask for it when they want the sending bank's record of the instruction, and in trade finance it is used as a payment confirmation.

The phrase 'MT103 wire transfer' refers to a cross-border customer payment represented in the legacy SWIFT MT103 format. Since November 2025, banks exchange pacs.008 instructions for CBPR+ cross-border payments, but a bank may still give its customer an MT103-format confirmation of the instruction.

Field 121 is a tag in the SWIFT MT user header (Block 3) that carries the UETR, the 36-character Unique End-to-end Transaction Reference. It was introduced for SWIFT gpi tracking in 2017 and made mandatory on every FIN customer credit transfer (MT103, MT202, MT202COV, MT205, MT205COV) from 18 November 2018. On a printed MT103 advice it appears as '{121:6f8d3a2b-1c44-4f8e-9b21-7d2c9f0a1b22}'.

Six fields of Block 4 are mandatory in every MT103: field 20 (sender's reference), field 23B (bank operation code), field 32A (value date, currency, and settled amount), field 50a (ordering customer), field 59a (beneficiary customer), and field 71A (details of charges). Everything else, including the intermediary fields 53a to 57a, the remittance note in field 70, and the regulatory reporting in field 77B, is optional and appears only when it is needed. The UETR in field 121 is also mandatory but travels in the Block 3 header, not in Block 4.

Field 77B (Regulatory Reporting) carries the statutory codes some central banks require on cross-border payments, such as the residence status of the parties or a balance-of-payments purpose code. It is optional and corridor-specific: a transfer between two countries with no reporting requirement will not have it, while payments to or from countries with exchange-control regimes often must include it. A missing or wrong 77B code is one of the reasons a payment can be held for repair at an intermediary bank.

Request an MT103 copy or SWIFT advice from the sending bank through the payment-details area of its portal, a secure message, a branch, or the relationship manager. Ask for the copy that shows the UETR. Delivery time, document layout, and any fee vary by bank.

MT103 is a customer credit transfer, the underlying payment instructed by the customer. MT202 is a financial-institution-to-financial-institution transfer, often used to move the cover funds between banks supporting an MT103 (the cover model). MT202COV is the explicit cover variant that references the underlying MT103. In a cover-model payment, the MT103 and the MT202COV share the same UETR.

Functionally similar, technically different. MT103 is the legacy SWIFT FIN MT format; pacs.008 (FIToFICustomerCreditTransfer) is the ISO 20022 XML replacement. Both carry the same customer credit transfer information and both carry a UETR. SWIFT's cross-border migration to ISO 20022 (CBPR+) completed in November 2025, when the MT/ISO coexistence period ended, so banks exchange pacs.008 instructions for CBPR+ cross-border payments while still issuing MT103-format confirmations to customers.

For CBPR+ cross-border payments, it already has been. SWIFT's CBPR+ coexistence period ended in November 2025, and the MT103's successor for those instructions is the ISO 20022 pacs.008 message. Two things did not change: banks still issue customers a confirmation of the instruction, a bank may issue that confirmation in either layout, and the UETR from field 121 carries over into pacs.008 unchanged, so the same reference tracks the payment.

Structured and hybrid addresses are already available for CBPR+ pacs.008 payments. SWIFT has deferred the planned November 2026 removal of unstructured addresses and will provide an update on revised timing and approach by December 2026 at the latest. Confirm your bank's address requirements for the channel you use, including MT-based corporate channels. The UETR is unchanged. See our ISO 20022 address requirements guide for formats and preparation steps.

An MT103 copy (also called a SWIFT copy, MT103 advice, or MT103/202 copy) is a PDF or printout that purports to reproduce the sending bank's own record of the payment instruction it released; a genuine copy is one obtained directly from the bank. Since the CBPR+ migration completed in November 2025, banks have exchanged pacs.008 instructions for CBPR+ cross-border payments, so a copy issued in the MT103 layout is that customer-facing record rather than the message that travelled between the banks. It typically shows all fields including the UETR, ordering customer, beneficiary, intermediary bank, amount, charges, and remittance information. Banks issue it on request as supporting documentation.

A sender cannot unilaterally cancel a payment after release. The sending bank can request cancellation using an MT192 or the ISO 20022 camt.056 message. If funds are returned, the return travels separately, now as a pacs.004 for CBPR+ payments. The outcome depends on the payment's state and the cooperation of the banks involved.

A bank-issued MT103 copy purports to record a payment instruction released by the sending bank over the SWIFT network. What it sets out is that instruction, not its arrival: it does not establish receipt or settlement, so pair it with a UETR status check to see what the tracker sources report. Whether any document is sufficient in a given dispute is for the parties and the forum involved.

The MT103 format does not set the delivery time. Timing depends on the banks, correspondent route, currency, compliance checks, cut-off times, weekends, and holidays. If the payment is delayed, use the UETR from field 121 to request a gpi trace or read the reported status.