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A wire transfer is an electronic, bank-to-bank transfer of funds that moves money directly from the sender's account to the recipient's account, usually across different banks and often across countries, using established interbank messaging networks such as SWIFT, Fedwire, CHAPS or SEPA. Track any wire transfer free on Ohmyfin →
The term "wire transfer" originated in the 19th century when Western Union transmitted money instructions over telegraph wires. Today, no physical wire is involved — a wire transfer is purely an electronic instruction that moves funds between bank accounts through a network of correspondent relationships. The instruction travels through one or more intermediary banks before the money is credited to the beneficiary account.
International wire transfers use the SWIFT (Society for Worldwide Interbank Financial Telecommunication) network as the primary messaging layer. Every cross-border SWIFT wire is identified by a UETR (Unique End-to-end Transaction Reference) — a 36-character code that allows real-time tracking across all correspondent banks in the chain. Since November 2018, all SWIFT banks must assign a UETR to every payment under the GPI (Global Payments Innovation) standard.
Domestic wire transfers work differently by country. In the US, large-value domestic wires travel over Fedwire (operated by the Federal Reserve) or CHIPS (Clearing House Interbank Payments System). In the UK, domestic sterling wires use CHAPS (Clearing House Automated Payment System). In the European Union, euro transfers use the TARGET2 (T2) system or SEPA Credit Transfer. Each system has its own cut-off times, settlement cycles and fee structures.
How a cross-border wire transfer actually moves: (1) you give your bank the beneficiary's account details (account number or IBAN, plus the bank's BIC/SWIFT code); (2) your bank creates an MT103 or pacs.008 payment message and sends it via SWIFT to its correspondent bank in the destination country; (3) each correspondent bank processes the message, debits the previous bank's nostro account, and forwards the message; (4) the final correspondent credits the beneficiary bank, which credits the customer's account. Each step runs sanctions screening and may deduct a fee.
Wire transfers are not reversible once the funds have been credited to the beneficiary account. A recall can be requested via the SWIFT GPI Stop-and-Recall service, but the beneficiary bank must ask the beneficiary for consent — they cannot simply reverse without agreement. This is why verifying beneficiary details before sending is critical. Track your wire transfer in real time by UETR on Ohmyfin — free, no account required.
A wire transfer is a direct, bank-to-bank push of funds — settlement is final and same-day (for domestic wires). An ACH (Automated Clearing House) transfer is a batch-processed, lower-cost payment that settles in 1–3 business days and can be reversed in some cases. Wires are used for large, time-sensitive, or international payments; ACH is used for payroll, bill payments and small recurring transfers.
Domestic US wires over Fedwire settle same-day within minutes. International SWIFT wires typically take 1–5 business days depending on the corridor, currency, and whether the payment hits correspondent bank cut-off times. See /how-long for corridor-specific timing guides.
Ask your bank for the UETR (Unique End-to-end Transaction Reference) from the SWIFT MT103 confirmation — it is in field 121. Paste it into Ohmyfin for free real-time tracking. If you only have the bank's reference number (TRN), Ohmyfin can also locate many payments by reference.
Beneficiary name (exactly as on their bank account), beneficiary account number or IBAN, beneficiary bank name and BIC/SWIFT code, and often a purpose of payment. Some countries (India, China, Mexico) require additional fields such as a purpose code, PAN number, or business registration number.
Only before the beneficiary's bank has credited the account. Once credited, a recall requires the beneficiary's consent. If you sent funds to the wrong account, contact your bank immediately and request a GPI recall — speed is critical.
Each correspondent bank in the chain may deduct a fee, depending on the charge code in MT103 field 71A (OUR = sender pays all; SHA = shared; BEN = beneficiary pays all). Exchange rate margin is a separate cost applied at conversion.
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