Banks' correspondent networks facilitate sanctions circumvention by firms

Regulatory tightening on correspondent banking—through enhanced due diligence requirements, transaction monitoring, or new compliance frameworks—would likely increase operational costs for global banks and payment processors, potentially pressuring net interest margins in the short term but reducing tail-risk exposure to sanctions violations.

If correspondent banking vulnerabilities persist without material policy response, financial institutions would continue absorbing compliance costs and reputational risk on a case-by-case basis, with enforcement actions remaining episodic rather than systemic—a steady-state that markets have largely priced in for major banks already.

A high-profile sanctions evasion case involving major banks or a significant geopolitical event triggering broader sanctions regimes could prompt sudden regulatory crackdowns, de-risking of correspondent relationships, or restrictions on payment flows—creating friction in cross-border settlement and potentially widening spreads in FX and trade finance markets.