Correspondent banking explained: why international payments use intermediary banks

Correspondent banking is an arrangement in which one bank provides services to another bank. For an international payment, that can give the sender’s bank access to a currency or banking system where it does not participate directly.

It helps explain a familiar experience: you send one payment, but the confirmation mentions another institution, a deduction appears along the way, or the receiving bank needs more information before it can locate the transfer.

Understanding the chain makes those situations easier to investigate. It also helps you compare a cross-border wire with a service that collects and pays out through local rails.

Start with the banks’ relationship

Two banks do not need to maintain a direct relationship for every possible country and currency. A bank can use another institution’s services to reach a destination. The relationship may involve accounts, payment processing, and other agreed services.

The BIS explanation of cross-border payment arrangements describes how correspondent-bank chains help payments reach the beneficiary. The number and roles of the institutions depend on the actual route; there is no universal rule that every international payment uses three banks.

For a customer, the relevant question is not simply how many institutions exist. It is which route the sending bank will use, which instructions that route requires, and which costs and processing conditions apply.

Understand nostro and vostro without the jargon

A bank may hold an account with another bank. The names “nostro” and “vostro” describe the account from different perspectives: our account with you, or your account with us.

These are bank-to-bank accounting relationships. They are not additional personal accounts automatically opened for the business sending a payment. They also should not be confused with the virtual receiving details that a payment provider may give a customer.

The BIS correspondent-banking report provides the institutional background. You do not need to manage these interbank balances yourself, but their existence helps explain how a bank can arrange a payment in another currency.

Follow a simplified payment journey

Imagine a fictional business whose bank cannot directly send a particular currency to the recipient’s bank. Its bank uses a correspondent that has the necessary relationship or access.

The payer authorises the transaction. Instructions move through the chosen route. The participating institutions process the required account entries and checks. The receiving institution then identifies the beneficiary and handles customer crediting under its procedures.

This is a conceptual illustration, not a routing instruction. In a real transaction, the message path and the path used to settle obligations can have different structures. Ask the sending institution to explain the actual arrangement rather than inferring it from a generic diagram.

Separate messages from money becoming available

A payment message carries instructions and information. It does not, by itself, prove that the recipient has a usable balance. Similarly, a sender’s account debit can establish that a process began without establishing that the final credit is complete.

Event	What it helps establish	What to check next
Sender authorises payment	A request was approved	Was it accepted and submitted?
Bank issues a transfer reference	A particular payment can be identified	What stage does the reference describe?
Intermediary processes instructions	The route has progressed	Has the receiving institution accepted it?
Recipient sees a credit	The recipient’s account has an entry	Is the amount available and correctly matched?

Our guide to payment statuses explains how to interpret these events without treating every “completed” label as the same promise.

Know why an intermediary can appear

An intermediary may be needed for currency access, a banking relationship, or the chosen settlement path. Its appearance is not, on its own, a sign of fraud or a failed transfer.

It also does not mean you should add an intermediary to the beneficiary form yourself. Some receiving instructions contain a specific intermediary field; others do not. Follow the verified instructions for the supported rail exactly.

If the sender’s form requires information you were not given, resolve the mismatch before sending. Guessing a bank identifier from an internet search can send the request down an unsuitable route.

Ask where fees may be taken

The sender may pay its bank. Other charges may apply within the route or at the destination. Whether deductions are possible, who bears them, and whether a recipient amount is guaranteed depends on the service and its terms.

International payment forms sometimes use charge options such as OUR, SHA, or BEN. Confirm what the specific bank means by the selected option and what its promise covers. Do not assume that a label alone guarantees every possible receiving charge is included.

For example, a fictional USD 5,000 invoice might produce a USD 4,975 receipt if a USD 25 deduction applies. That difference needs supporting evidence before deciding whether the customer still owes money or the business should record a payment expense. See international payment fees.

Allow for more than one operating calendar

A payment can depend on institutions in different places. A business day at the sender may be a holiday at an intermediary or destination. Processing cutoffs can also apply at more than one stage.

The practical response is to ask for an expected arrival window for the actual currency and route. “International wire” is too broad to support one universal deadline.

Plan important payments around when the recipient needs usable funds. A promise to submit instructions on Friday afternoon is different from a promise that a supplier can pay its own bills on Friday afternoon.

Understand the effect of incomplete information

A mismatch in beneficiary name, account information, reference, or payment purpose can require clarification. Additional eligibility or compliance checks may also affect processing. The fact that the payer has sent successfully before does not remove these possibilities for every later transaction.

Answer requests through the institution’s verified channel. Preserve the original instructions, explain the legitimate business purpose, and provide requested documents accurately. Do not try another route to bypass a restriction or divide a payment to avoid a check.

If the issue is an invoice-to-payment mismatch rather than a bank delay, use the payment handover checklist to identify the missing information.

Compare correspondent routes with local collection

A local receiving flow lets a payer use supported domestic instructions. A separate cross-border workflow and payout may happen afterward. This can change the payer’s experience, but it does not eliminate the need for licensed infrastructure, verification, or route-specific conditions.

Compare the complete path: payer location, sending currency, accepted rail, recipient eligibility, conversion, and payout destination. A local account identifier in one currency does not prove that an account can receive every international wire or SWIFT payment.

The local versus international transfer guide explains the distinction in more detail.

Prepare a useful investigation request

Start with the sending institution when a submitted payment cannot be located. Provide the transaction date, amount, currency, beneficiary details, and the bank’s payment reference. Ask which stage is confirmed and whether the receiving institution has acknowledged the payment.

For applicable Swift transfers, a UETR can help identify the payment across the chain. Swift describes the UETR as a unique reference used in payment instructions and tracking. It is different from the invoice number you gave the customer.

Keep one support case and a timeline of responses. A new transfer is not a substitute for investigating the original; it can create a duplicate payment.

Questions to ask before a large payment

Ask whether the beneficiary instructions support this currency and route, whether an intermediary field is required, what net amount is expected, and which charges remain uncertain. Confirm the bank’s submission deadline and the recipient’s expected availability window.

Also establish who can request a trace, what evidence they will receive, and how a return would be handled. A documented answer is more useful than a general claim that a service is “global.”

Use payment tracing when a transaction is already in motion and you need an orderly investigation.

Frequently asked questions

Is a correspondent bank the same as the receiving bank?

Not necessarily. The receiving bank serves the beneficiary in the payment instructions. A correspondent may provide services to another bank along the route. The actual roles depend on the transaction.

Can I choose which intermediary bank is used?

Sometimes instructions or bank services allow a particular arrangement, but do not assume customer choice is available. Follow the receiving and sending institutions’ confirmed instructions.

Does every international payment use Swift?

No. International payment services can combine domestic rails, different messaging arrangements, and other supported infrastructure. Currency alone does not identify the complete route.

Can an intermediary fee be predicted exactly?

Only if the service can provide and honour that information for the specific transaction. Ask what is included, what can be deducted, and whether the final recipient amount is guaranteed under the quote’s conditions.