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Updated January 5, 2023

Introduction to Financial Services: Banking

Banks serve an important role in the financial system and
broader economy. They aggregate the savings of
households and businesses and lend to individuals,
businesses, and federal and local governments. Economic
output would be lower if, instead of banks, businesses had
to finance investments themselves or individuals had to rely
on their savings alone to make expenditures (e.g., home and
car purchases). Banks also provide other important financial
services, such as payment processing.
This In Focus reviews key concepts in banking, provides an
overview of banking-related regulations and recent banking
regulation, and highlights emerging policy issues.
Key Concepts in Banking
The term bank generally refers to a depository institution,
such as a commercial bank or thrift, that primarily accepts
deposits, makes loans, and processes payments. To accept
deposits, an institution must have a federal or state charter,
and deposits are generally insured by the federal
government, subject to certain limits. Using customer
deposits and other funding, banks generally make loans and
acquire certain other assets. (Credit unions are similar to
banks in these ways but are distinct from banks in their
ownership structure and regulation. This In Focus generally
covers banks but notes information related to credit unions
where pertinent.)
Balance Sheet. An understanding of a bank's balance
sheet-its assets, liabilities, and capital (equity)-provides
the foundation for analyzing many banking issues. Loans
made and securities owned by a bank typically comprise the
majority of assets on a bank's balance sheet. To get the
funding to make loans and acquire assets, banks use
liabilities and capital. Customer deposits (e.g., checking and
savings account deposits) and any debt that a bank issues
(e.g., bonds, repurchase agreements) are liabilities of the
bank, as the bank owes these funds to its customers and
creditors. The difference between the assets and liabilities
equals the bank's equity (assets - liabilities = equity).
Equity can be thought of as stockholders' ownership stake.
Deposit Insurance. The Federal Deposit Insurance
Corporation (FDIC) insures bank deposits up to a $250,000
account limit. (The National Credit Union Administration
insures credit union deposits-sometimes referred to as
shares.) By guaranteeing deposits, federal deposit
insurance is intended to prevent bank runs and promote
financial stability to the financial markets. Although the
deposit insurance is funded by the industry, it is backed by
the full faith and credit of the United States (and thus,
ultimately by the taxpayers).

Overview of Regukttion
Two major components of bank regulation are prudential
and consumer compliance regulation.
Prudential. Prudential regulation (or safety and
soundness regulation) is designed to promote bank
profitability and avoid bank failures, thereby protecting
taxpayers and the stability of the financial system. A bank's
charter type and corporate structure determine its primary
federal prudential regulator (see Table 1). Banks are
chartered and regulated as national banks under the
authority of the Office of the Comptroller of the Currency
(OCC) or as state banks under the authority of a state
regulator. The Federal Reserve (Fed) and the FDIC regulate
state banks in conjunction with state bank regulators. Most
banks are owned by a parent company-called a bank
holding company (BHC). Some BHCs have subsidiaries
that engage in nonbank financial activities, such as
underwriting and dealing in certain types of securities. The
Fed is the primary regulator of BHCs.
Table I. Primary Federal Depository Regulators
Regulator                 Oversees
Office of the Comptroller  Nationally chartered banks and
of the Currency (OCC)  national thrifts
Federal Reserve (Fed)  Bank holding companies and Fed
member state banks and thrifts
Federal Deposit Insurance  Non-Fed member state banks
Corporation (FDIC)     and thrifts
National Credit Union  Federally chartered or insured
Administration (NCUA)  credit unions
Source: CRS.
Capital and liquidity rules are important prudential
regulation tools. Holding a high level of capital can make a
bank's failure less likely because capital can be written
down to absorb losses. For this reason, banks are generally
required to maintain sufficient levels of capital to ensure
solvency and protect bank depositors and taxpayers. Banks
need liquidity to meet short-term obligations. Thus, banks
are generally required to hold liquid assets or use stable
funding to ensure adequate liquidity.
Consumer Compliance. Consumer compliance regulations
seek to ensure that banks conform to applicable consumer
protection and fair-lending laws. The Consumer Financial
Protection Bureau (CFPB), created by the Dodd-Frank Wall
Street Reform and Consumer Protection Act (P.L. 111-
203), is primarily responsible for issuing the rules that all
banks must comply with. The CFPB is the primary
supervisor for consumer compliance at banks with more
than $10 billion in assets. Prudential regulators are the

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