At a glance
Correspondent banking is the arrangement in which one bank holds an account for another and executes payments, currency conversion, and trade finance on its behalf, so that a bank can serve currencies and markets where it holds no licence and no presence. Most international payments still settle this way, through a chain of accounts that banks keep with one another.
Key distinction: SWIFT carries the instruction; the correspondents' books carry the money. A payment is final when the last bank in the chain credits the beneficiary, and every property of international settlement, its speed, its cost and its certainty, follows from who holds the accounts in between and what they do with the balances.
This guide explains the model from first principles: what a correspondent bank is, why the system exists, how a payment moves through it, what it costs beyond the fee, why access has been shrinking for more than a decade, the rules correspondents work under, and the three forces changing it in 2026. It is written for the people who depend on the system, treasurers, payment teams and the platforms that reach the world through a banking partner.
What is a correspondent bank?
A correspondent bank holds an account for another financial institution and provides services through it: executing payments in its home currency, converting currencies, financing trade, and managing the balances the other institution leaves with it. The institution on the other side of the account is the respondent. The relationship is asymmetric by design. The correspondent has the local access; the respondent has the need.
The largest correspondents are the global banks, and the capacity of the system concentrates in them. J.P. Morgan, Citi, HSBC and BNY each hold thousands of respondent relationships. Below them, regional banks act as correspondents for smaller domestic banks, and below those, payment firms and fintechs reach local rails through a banking partner. Every layer down adds a set of books the payment must cross.
Payment flows across borders reached roughly $179 trillion in 2024, according to McKinsey, and the messaging network that carries most of the instructions connects more than 11,500 institutions across 200 markets. Almost all of that value moves as entries on correspondent accounts.
Why correspondent banking exists
No bank can be present everywhere. Licences are granted market by market, membership of a domestic payment system is reserved for institutions regulated there, and a bank in Nairobi cannot join Fedwire or SEPA directly. It reaches the dollar and the euro by holding accounts with banks that can. Correspondent banking turns thousands of national systems into one global system.
The model is older than the modern bank. Italian merchant houses of the fourteenth century kept accounts with one another in different cities so that a bill drawn in Florence could be paid in Bruges, and the bookkeeping terms still in use, nostro and vostro, come from that world. The nineteenth century industrialised it: London clearing banks held sterling accounts for banks across the empire, and New York houses did the same for dollars.
The last structural change was messaging. SWIFT, founded in 1973, replaced telex with a standard, secure way for banks to instruct one another, and in November 2025 that standard itself changed when the industry retired the old MT payment messages for ISO 20022. The account structure underneath the messages has barely changed in a century.
How correspondent banking works
A payment moves as a chain of account entries, and no currency crosses a border. A British importer's bank debits its customer and instructs its dollar correspondent in New York. That correspondent debits the British bank's account, credits the account of the Singapore bank's own correspondent, and passes the instruction on. The Singapore bank receives a credit on its books and pays the supplier. Four ledgers moved; the money never left the banks that hold it.
Each bank in the chain adds three things: a set of books the payment has to cross, a fee that is usually deducted en route, and a window in which the funds belong to nobody the sender can call. That is why treasurers watch the length of the chain. A payment with one correspondent is predictable. A payment with three intermediaries is a phone tree when it goes wrong.
Two terms cause more confusion than any others. A correspondent holds a standing account relationship with the respondent. An intermediary bank is any bank that a particular payment passes through on its way to the beneficiary, which may be a correspondent of one side, of both, or of neither. Every correspondent can act as an intermediary; an intermediary in one payment may hold no relationship with you at all.
Nostro, vostro and the role of SWIFT
The accounts at the centre of the system carry old names. A nostro account is your account held at another bank, in that bank's currency: ours, held with you. A vostro account is the same account seen from the other side: yours, held with us. A loro account is a third party's account referred to from outside the relationship. One account, two perspectives, three words. The mechanics, and why they shape settlement outcomes, are covered in nostro, vostro, loro.
Respondents fund their nostro accounts in advance, because a correspondent will not clear against money it does not hold. That prefunding is the working capital of the system, and it sits idle in every currency a respondent serves, sized for the latest the funds might be needed, not the average.
SWIFT is the messaging layer. It carries the instruction, the confirmation and the reference data between the banks in the chain, and its relationship management application decides which institutions may message each other. Settlement happens on the correspondents' books, and SWIFT touches none of it. Its tracker now shows 75% of payments reaching the beneficiary bank within ten minutes, which is a statement about messages, not about when a customer is credited.
What correspondent banks provide
Four services sit inside a correspondent relationship; a respondent may buy any combination.
- Clearing and payments. Execution of payments through the correspondent's own membership of domestic systems such as Fedwire, CHIPS, SEPA and Faster Payments.
- Foreign exchange. Conversion at the point the payment crosses books, priced by the correspondent and usually embedded in the rate rather than shown as a fee.
- Trade finance. Letters of credit, guarantees and documentary collections that let an importer and an exporter transact without having to trust each other.
- Liquidity and treasury. Multi-currency account structures, credit lines against expected flows, and the management of balances left in nostro accounts while they wait.
What a correspondent does not provide is a view of the respondent's customers. It sees the respondent, relies on the respondent's controls, and prices that reliance into everything above.
What correspondent banking costs
The visible cost is the fee per payment. Each bank in the chain deducts its charge from the amount in transit, which is why a beneficiary often receives less than was sent and why the sender rarely sees the deductions in advance. Currency conversion sits beside it, and for most flows the markup is the larger of the two, as what platforms pay for FX shows.
The larger cost is capital. A respondent that serves ten corridors holds ten prefunded nostro balances, each sized for settlement uncertainty, and none of them earns anything while it waits. The prefunding problem is the cost line most finance teams never itemise, because it appears nowhere on an invoice.
Reform has not moved the cost much. The G20 set targets for speed, cost, access and transparency to be met by the end of 2027, and the FSB's 2025 progress report finds most corridors still short of them. The BIS, in its own assessment, finds cost the target moving slowest of all. Faster messages have not changed who holds the money in between.
Why correspondent banking is shrinking
Access has tightened for more than a decade. BIS data tracked a 30% decline in active correspondent relationships between 2011 and 2022, with the sharpest losses in the Pacific islands, the Caribbean and South America, and its later monitoring shows the decline slowing while flows concentrate through fewer, larger banks. At the top of the dollar system, CHIPS settles around $2 trillion a day through a few dozen direct participants.
The driver is economics as much as risk. A small respondent brings a large correspondent little revenue and a full due-diligence obligation, so exiting the relationship is the rational choice, and whole corridors have paid for it. The FATF's guidance names the pattern, de-risking, and states plainly that its own standards do not require it. The US Congressional Research Service reaches the same conclusion about the effect on emerging markets and money transfer businesses.
The institutions that feel this first are not banks. Payment firms, e-money institutions and platforms reach the system one layer down, through a bank that is itself a respondent somewhere, so when a correspondent tightens terms, the platform loses access before the bank does. The incentive problem underneath is the subject of its own article.
The rules correspondents work under
Correspondent relationships carry the heaviest due-diligence load in banking, because the correspondent relies on the respondent's controls over customers it will never see.
Three bodies set the terms. The FATF sets the global standard for that diligence in its 2016 guidance. The Basel Committee governs the capital and liquidity behind it. And the Wolfsberg Group's correspondent banking due diligence questionnaire, updated to version 1.4 in 2023 with a new section on fraud, is the instrument most correspondents use to run the review.
In practice a correspondent assesses five things before it opens an account: the respondent's licensing, its ownership, its anti-money-laundering programme as operated rather than as written, the flows it proposes to send, and where its customers' money sits while it waits.
Nested arrangements, where a respondent passes its own downstream clients' flows through the account, draw the closest scrutiny of all. The respondent's side of that process is set out in how to establish a correspondent banking relationship.
How correspondent banking is changing in 2026
Three forces are reshaping the model at once, and none of them removes the account underneath.
- The rails are getting longer hours. The Federal Reserve will run Fedwire 22 hours a day, six days a week from 2028 or 2029, and the Bank of England is consulting on near 24/7 settlement around the turn of the decade. Until then, continuous settlement is being built on top: Swift's shared ledger, now ready for initial use with 17 banks piloting tokenised deposits, and the BIS's Project Agora, which settled real-value transactions in tokenised money in July 2026.
- A parallel dollar has a rulebook. Payment stablecoins now run under the GENIUS Act, with one-to-one reserves in cash and short-dated Treasuries and redemption at par. Visa and Mastercard settle in them. But every stablecoin is minted from a bank deposit and redeemed into one, so the fiat legs still run through correspondent accounts, as stablecoin settlement explains.
- New correspondents for the institutions the big banks decline. The gap left by de-risking is being filled by correspondents built for it: institutions that hold each client's funds in the client's own name, on a non-lending, 100% reserve model, with direct scheme membership instead of a chain of intermediaries. Lorum is the correspondent institution for banks and fintechs, and that structure is why it can say yes where a universal bank says no.
A structural comparison
The three ways an institution can reach a currency it is not licensed in differ on the questions that decide settlement outcomes: whose name is on the account, whose balance sheet holds the funds, and who sets the schedule.
| Dimension | Traditional correspondent bank | Direct scheme membership | Correspondent institution |
|---|---|---|---|
| Who can use it | Any regulated institution the correspondent accepts | Institutions licensed in that market and admitted to the scheme | Banks, fintechs and platforms that pass due diligence |
| Where funds sit | In a nostro account on the correspondent's lending balance sheet | At the central bank or scheme settlement account | In named accounts on a non-lending, 100% reserve balance sheet |
| Name on the account | The respondent's, with end clients on the respondent's own ledger | The member's | The client's, or the end client's, in the account structure itself |
| Settlement schedule | Set by the correspondent's cut-offs and priorities | Set by the scheme | Set by the institution's direct rail access, with stated windows |
| Capital tied up | Prefunded nostro balances in every corridor | Scheme collateral and liquidity requirements | Working balances only, with certainty replacing the buffer |
| Strongest fit | Trade finance, exotic corridors, institutions with global bank relationships | Large domestic institutions in one market | Institutions holding client money across several currencies |
The infrastructure decision
Correspondent banking is not going away, because the thing it solves, that no bank is present everywhere, is not going away. What is changing is who provides it and on what terms. The universal banks are concentrating on the respondents that pay, the schemes are lengthening their hours, tokenised money is moving funds between the hours, and a new class of correspondent is serving the institutions the old one declined.
For an institution choosing how to reach a currency, three questions settle most of it. Whose name is on the account where the money waits? Whose balance sheet holds it, and what else does that institution do with balances? And when a payment is late or returned, who can see it without reconstructing a ledger?
Lorum is the correspondent institution for banks and fintechs. It provides programmable access to global clearing, named custody, and treasury, on a non-lending, 100% reserve model. For banks, fintech and PSP platforms and digital platforms that need the reach of correspondent banking without the balance sheet in the middle, that is the model: one relationship, direct rails, and an account with the client's name on it.
Frequently asked questions
What is meant by correspondent banking?
Correspondent banking is one bank holding an account for another and executing payments, currency conversion and trade finance on its behalf. It lets a bank serve currencies and markets where it holds no licence, and it is how most international payments still settle.
What is the difference between a correspondent bank and an intermediary bank?
A correspondent holds a standing account relationship with you. An intermediary bank is any bank a particular payment passes through on its way to the beneficiary, which may hold no relationship with you at all. Every correspondent can act as an intermediary; not every intermediary is your correspondent.
What is an example of a correspondent banking relationship?
A bank in Kenya that wants to offer its customers dollar payments opens a nostro account with a bank in New York. It funds the account in advance, sends payment instructions over SWIFT, and the New York bank executes them on Fedwire or CHIPS. The Kenyan bank has dollar access without a US licence; the New York bank holds the balance and charges for the service.
Which banks are correspondent banks?
The largest correspondents are the global banks: J.P. Morgan, Citi, HSBC, BNY, Deutsche Bank and Standard Chartered among them. Regional banks act as correspondents for smaller domestic banks, and a newer class of correspondent institution, including Lorum, serves banks and fintechs on a non-lending, 100% reserve model.
What are the disadvantages of correspondent banking?
Fees deducted at every bank in the chain, foreign exchange priced at the correspondent's discretion, capital prefunded in every corridor, settlement timing set by the correspondent's priorities, and dependence on a relationship the correspondent can end. The last has become the largest, as de-risking has removed access from whole regions.
What is nested correspondent banking?
Nesting is when a respondent bank lets its own downstream clients, often other financial institutions, move funds through its correspondent account. The correspondent then relies on controls two steps removed from the customer, which is why nested arrangements draw the closest due diligence and why many correspondents refuse them outright.
