How Does an International Wire Transfer Work?
Sending money to a bank account in another country involves more than just typing in a different set of numbers — the payment usually passes through several banks before it ever reaches the recipient, and each stop can affect both the cost and the timeline.
The short answer
An international wire transfer moves money electronically from a sender’s bank account to a recipient’s account at a foreign bank, typically routed through one or more intermediary banks that maintain relationships across borders. Along the way, the currency is generally converted, several parties may each apply a fee, and the whole process commonly takes a few business days rather than the same-day speed of many domestic transfers.
The general path the money takes
A sender’s bank doesn’t usually have a direct relationship with every bank in every country, so international wires often move through a network of correspondent banks — intermediary institutions that hold accounts with each other specifically to move money across that gap. The sending bank instructs its correspondent bank, which may pass the payment to another correspondent, until it reaches a bank connected to the recipient’s institution, which then credits the recipient’s account. This is different from a domestic wire transfer or ACH payment, which generally moves through a single domestic clearing system without needing intermediary banks at all.
How currency conversion fits in
If the sender’s account is in one currency and the recipient’s account is in another, the conversion typically happens at some point along that chain, often at the sending bank using its own exchange rate. That rate usually includes a margin above the wholesale market rate, which functions as a cost layered into the transfer even when it isn’t labeled as a separate fee. This is part of the same broader process covered by how currency exchange at a bank works, just applied to a wire instead of a cash exchange.
What affects the timeline
- Number of intermediary banks. Each additional correspondent bank in the chain adds a step where the payment is received, checked, and forwarded, which adds time.
- Time zones and banking hours. A wire initiated late in the sender’s business day may not begin processing at the recipient’s bank until that bank’s next business day.
- Compliance review. International transfers are commonly screened for anti-money-laundering and sanctions compliance, and a payment that gets flagged for manual review can be delayed while a bank verifies details.
- Currency and country. Transfers to less commonly used currencies or countries with fewer correspondent banking relationships can take longer simply because the path to the recipient is less direct.
Why the cost adds up
Because multiple banks can be involved, an international wire often carries more than one fee: the sending bank’s fee, a potential fee from an intermediary bank taken out of the transferred amount along the way, and sometimes a receiving fee charged by the recipient’s bank. This layered fee structure is part of why wire transfers tend to cost more than other transfer methods, and it’s worth checking with the sending bank whether it can cover intermediary fees so the recipient gets the full amount rather than a reduced one.
What to weigh
Before sending money internationally, it helps to confirm the recipient’s exact account details, including any country-specific codes required to route the payment correctly, since an error partway through a multi-bank chain can be far slower to fix than a domestic mistake. Comparing the total cost — the fee plus the exchange rate margin — against the transfer amount, and asking whether fees can be covered by the sender, gives a clearer picture of what the recipient will actually receive.
The bottom line
An international wire transfer works by relaying a payment through a chain of banks that connect the sender’s currency and country to the recipient’s, with both the cost and the timeline shaped by how many stops that chain requires. Understanding that multi-bank path is what makes it easier to anticipate delays and fees rather than being surprised by them.