Correspondent Banking Under Siege

A Network in Retreat

According to data from SWIFT and the Bank for International Settlements, global correspondent banking relationships have declined 22% since 2011. The number of active payment corridors fell 10% between 2011 and 2018 alone, from approximately 10,800 to 9,800. The contraction is not uniform: advanced economies experienced a 23% decline, but small island developing states and dependent territories lost 41% of their relationships — nearly double the global average.

The Pacific Islands have been hit hardest. Correspondent banking relationships across Fiji, Kiribati, the Marshall Islands, Samoa, Tonga, Tuvalu, and Vanuatu have declined by approximately 60% since 2011 — three times the global rate. In 2024, the World Bank committed $77 million to restore banking relationships across eight Pacific nations, an implicit acknowledgment that market forces alone will not reverse the trend. The Caribbean has experienced similar disruption: at least 16 banks lost correspondent relationships during 2015–2018, with the Bahamas, Barbados, Belize, Jamaica, and the Organisation of Eastern Caribbean States particularly affected.

The paradox embedded in the data is striking: despite the loss of relationships, the value and volume of cross-border payments through correspondent banking grew approximately 5% and 4% respectively in the most recent reporting period. The system is concentrating — fewer relationships carrying more traffic — which increases systemic fragility. A smaller number of correspondent banks now act as critical nodes in the global payment network, and the failure or withdrawal of any one of them would produce disproportionate disruption.

Why Banks Walk Away

Sanctions Complexity

The proliferation of sanctions regimes — US, EU, UK, and increasingly autonomous national programmes — has made correspondent banking compliance exponentially more complex. As our analysis in ‘Sanctions in 3D’ detailed, the three dominant regimes are diverging on secondary sanctions, energy carve-outs, and technology controls. For a correspondent bank processing transactions across multiple corridors, each payment must be screened against a growing and frequently updated sanctions universe. The compliance cost per transaction has risen while the revenue per transaction has not.

AML Enforcement Escalation

Global enforcement fines for financial crime breaches totalled $4.5 billion in 2024, following $6.6 billion in 2023. The $1.3 billion FinCEN penalty against TD Bank in 2024 — the largest in FinCEN history — was part of a combined $3.1 billion settlement across US regulators — demonstrated that correspondent banking compliance failures can produce institution-threatening penalties. Banks have responded rationally: when the cost of maintaining a correspondent relationship exceeds the revenue it generates, and the downside risk includes billion-dollar fines, the commercial logic of exit becomes compelling.

FATF Grey-List Pressure

The FATF’s grey list — formally, ‘jurisdictions under increased monitoring’ — currently includes 19 countries, including Vietnam. Nigeria and South Africa were removed in October 2025 after demonstrating substantial progress in their AML/CFT frameworks. Grey-listing signals heightened money-laundering or terrorist-financing risk, and the market response is reflexive: correspondent banks reduce exposure to grey-listed jurisdictions regardless of the specific deficiencies identified. The self-fulfilling nature of the mechanism — grey-listing triggers de-risking, which degrades financial inclusion, which in turn weakens AML controls — has been widely criticised but not reformed.

The Economics of Exit

Banks allocate between 2.9% and 8.7% of non-interest expenses to compliance, with the largest institutions spending over $200 million annually on financial crime compliance alone. For many correspondent relationships — particularly those involving smaller, lower-volume corridors in developing economies — the compliance cost exceeds the revenue generated. The commercial decision to exit is not driven by evidence of actual illicit activity but by the perceived risk-reward calculus. Banks cite rising compliance costs, regulatory uncertainty, and inadequate customer due diligence infrastructure as the primary reasons for terminating relationships.

Fragmentation and Alternative Rails

The $2.5 Trillion Trade Finance Gap

The Asian Development Bank’s 2025 Global Trade Finance Gap Survey estimates the global trade finance gap at $2.5 trillion — approximately 10% of global trade. While de-risking is not the sole cause (trade finance also suffers from capacity constraints, documentation complexity, and credit risk aversion), the contraction of correspondent banking networks directly reduces the supply of trade finance to precisely those economies that need it most. SME rejection rates for trade finance remain elevated at over 50% globally, with the ADB reporting that 57% of trade finance requests from SMEs are rejected compared to just 10% for multinational companies, and the gap disproportionately affects developing economies.

Alternative Payment Systems: CIPS and SPFS

The de-risking of traditional correspondent banking is accelerating the development of alternative payment infrastructure. China’s Cross-Border Interbank Payment System (CIPS) processed 8.2 million transactions totalling RMB 175.5 trillion ($24.5 trillion) in 2024 — a 43% increase in value year-on-year. CIPS now has 176 direct participants and 1,514 indirect participants, serving approximately 5,000 banking institutions across 189 countries. The system is no longer a niche alternative; it is a parallel infrastructure of global scale.

Russia’s System for Transfer of Financial Messages (SPFS) has expanded to 584 participating organisations, including 177 foreign institutions from 24 countries. Participation grew despite — or because of — Western sanctions: institutions cut off from SWIFT have migrated to SPFS as the only available clearing channel for Russia-related trade. In November 2024, OFAC warned that institutions joining SPFS after the alert date would face ‘aggressive targeting,’ signalling a potential new front in the sanctions architecture.

Central Bank Digital Currencies: The Next Layer

The mBridge project — a wholesale CBDC platform involving the central banks of China, Hong Kong, Thailand, the UAE, and Saudi Arabia — reached minimum viable product stage in 2024 before being handed from BIS coordination to its participating central banks. Thirteen cross-border wholesale CBDC projects are now operational globally, representing a fundamental experiment in whether digital currencies can bypass the correspondent banking model entirely. If successful, these platforms could render traditional correspondent relationships unnecessary for a growing share of cross-border payments.

Risk Implications for Cross-Border Businesses

The fragmentation of global payment infrastructure creates a new category of operational risk for companies with cross-border exposure. Payment corridor disruption, transaction cost inflation, concentration risk, regulatory arbitrage exposure, and counterparty opacity are no longer theoretical concerns — they are active risk factors that require dedicated monitoring.

The strategic implication is clear: the era of frictionless cross-border payments is ending. Companies that treat payment infrastructure as a commodity will face increasing disruption. Those that treat it as a strategic asset — maintaining diversified banking relationships, monitoring regulatory changes in real time, and building expertise in alternative payment systems — will preserve their ability to operate across borders.

Correspondent banking data from SWIFT, BIS CPMI, and FSB Correspondent Banking Data Reports. Trade finance gap from ADB 9th Global Trade Finance Gap Survey (2025). FATF grey list current as of October 2025. CIPS data from official CIPS Annual Report 2024. SPFS data from Bank of Russia disclosures. Enforcement data from OFAC, FinCEN, and UK FCA records. Compliance cost estimates from Fourthline 2025 survey.