# How Correspondent Banking Infrastructure Enables Sanctions Evasion
The correspondent banking system, which underpins global trade and capital flows, has become a vector for sanctions evasion. This network of relationships between banks allows financial institutions to settle transactions across borders, but the same architecture that enables legitimate commerce also provides cover for entities seeking to circumvent U.S. Treasury restrictions.
Correspondent banking operates through a web of relationships where one bank (the correspondent) holds accounts on behalf of another bank (the respondent), enabling cross-border payments and settlements. The system processes trillions of dollars annually and remains essential infrastructure for international commerce. Yet this same opacity and complexity creates gaps that sophisticated actors exploit to move money despite sanctions regimes.
U.S. Treasury sanctions targeting specific countries, entities, and individuals rely partly on financial institutions implementing screening protocols. But correspondent banking's layered structure complicates enforcement. A transaction can move through multiple correspondent relationships across different jurisdictions before reaching its final destination, making it difficult for any single institution to identify prohibited activity.
The mechanics enable evasion in several ways. First, shell companies registered in non-sanctioned jurisdictions can conduct business with sanctioned entities through correspondent relationships. Second, transactions deliberately structured to avoid triggering standard screening systems can slip through. Third, banks operating in jurisdictions with weaker regulatory frameworks or political incentives to circumvent sanctions provide conduits for prohibited flows.
Companies and state-owned enterprises from Russia, Iran, North Korea, and other sanctioned jurisdictions have leveraged correspondent banking to access U.S. dollars and global financial markets. The Financial Crimes Enforcement Network (FinCEN), a Treasury bureau, has documented cases where banks failed to adequately screen transactions moving through correspondent channels. These failures carry stiff penalties. JPMorgan Chase, for example, paid over $1 billion in settlements related to sanctions violations across multiple enforcement actions.
The problem intensifies as banks face competing pressures. Complying with sanctions screening requires expensive compliance infrastructure and sophisticated due diligence. Yet banks operating in multiple jurisdictions face pressure from host governments and business relationships that may conflict with U.S. enforcement priorities. Correspondent banking relationships concentrate risk in large global banks that serve as intermediaries, making them enforcement chokepoints.
Regulators have increased scrutiny, requiring banks to conduct enhanced due diligence on correspondent relationships and implement transaction monitoring systems. The Office of Foreign Assets Control (OFAC) has issued guidance requiring institutions to understand their correspondent networks and flag suspicious activity. Banks have responded by terminating relationships with institutions in higher-risk jurisdictions, a trend that narrows banking access but tightens the net against evasion.
The tension between global finance and enforcement remains unresolved. Eliminating correspondent banking entirely would fracture international trade. Yet leaving gaps in oversight enables sanctions to lose credibility as policy tools. Banks must navigate increasingly complex regulatory expectations while maintaining profitable international operations.