What Is Correspondent Banking?

How It Works

Most of the world's 25,000+ banks do not have direct bilateral relationships with each other. A small bank in Wisconsin has no direct account at a bank in Malaysia. Instead, the Wisconsin bank has a relationship with a large correspondent bank — JPMorgan, Citibank, or Wells Fargo — that has established relationships with banks across the world.

When the Wisconsin bank needs to send money to Malaysia, it instructs its correspondent bank to debit its account and credit the Malaysian bank's account (which the correspondent maintains as a 'nostro account'). The Malaysian bank keeps a 'vostro account' at the correspondent. These mirror accounts — the same account viewed from two sides — are how money actually moves between banking systems without being physically transported.

For transfers to less common destinations, the chain can involve multiple correspondents. Wisconsin bank → US correspondent → regional correspondent in Southeast Asia → Malaysian bank. Each correspondent takes a fee and imposes its own processing time. The fees and delays multiply with each additional link.

The correspondent banking system has been contracting. Since 2011, major global banks have terminated thousands of correspondent relationships — a process called 'de-risking.' The compliance cost of maintaining relationships with banks in high-risk jurisdictions (for money laundering or sanctions reasons) has exceeded the revenue, causing banks to withdraw from those corridors. This has cut off entire regions from the global dollar payment system.

Why It Matters

Correspondent banking is the central mechanism of international finance, and its fragility has enormous consequences. When major banks de-risk and terminate correspondent relationships with regions like Africa, the Caribbean, or Central Asia, those regions lose access to dollar payment rails. Local banks cannot easily receive or send international dollar payments, hampering trade, remittances, and economic development.

Blockchain-based payment networks sidestep the correspondent banking system entirely. Instead of routing through chains of correspondent banks, a stablecoin payment goes directly from sender's wallet to recipient's wallet on a public blockchain. There are no correspondent relationships, no de-risking, and no geographic exclusions. This is one of the most significant potential impacts of blockchain on global finance.

Real-World Example

A small Nigerian bank wants to process dollar payments for its business customers importing from the US. Without a direct relationship with a US bank — and with major US banks having terminated many African correspondent relationships for compliance cost reasons — the Nigerian bank must route through a regional correspondent, then to a global correspondent, then to the US. Each hop costs $15 to $30 and adds 24 hours. Many transactions become impractical for small amounts. A blockchain-based dollar payment would arrive in seconds for pennies, making these transactions viable.