Who Regulates Whom

The relationship between the Office of the Comptroller of the Currency (OCC), the Federal Reserve Board (FRB), the Federal Deposit Insurance Corporation (FDIC), and State Banking Regulators forms the foundation of the U.S. "Dual Banking System." Under this system, a bank's primary regulatory agency is determined entirely by how it is chartered and whether it chooses to join the Federal Reserve System.

The Core Division: Who Regulates Whom? The regulatory landscape is split into distinct territories based on a bank’s operational choice:

 Agency Breakdown and Overlapping Roles

While the primary day-to-day examiner is determined by the list above, the agencies interact, overlap, and cooperate across several financial safety nets:

OCC Only: (Supervises federal/national charters.) National banks (banks with "National" or "N.A." in their name) are chartered, supervised, and examined exclusively by the OCC. Operates mostly independently of state authorities; federal rules often preempt state banking laws for national institution

FRB (Manages monetary policy, handles systemic liquidity (lender of last resort), and regulates Bank Holding Companies (BHCs). Collaborates with state regulators to alternate examinations of state member banks. Crucially, if an OCC-regulated national bank is owned by a parent holding company, the FRB regulates that parent umbrella organization.

FDIC (Federal Deposit Insurance Corporation) / (Manages the Deposit Insurance Fund (insuring accounts up to $250,000) and resolves failed banks.) Insures almost all commercial banks in the U.S. (including those regulated by the OCC and FRB). Because it holds the insurance risk, the FDIC maintains "backup" examination authority over national and state member banks if it fears systemic risks.

FRB + State: State-chartered banks that voluntarily choose to become members of the Federal Reserve System are jointly supervised by the FRB and their specific State Banking Regulator.

State Regulators (e.g., NYDFS, Texas Dept. of Banking) / (Charter local state banks and enforce state-specific financial and consumer protection laws.) Share day-to-day oversight of state banks with either the FRB or FDIC. To reduce administrative burdens on local banks, they frequently conduct joint exams or alternate years with their federal counterpart.