Commercial banking is the business of lending money to companies and managing their cash

A commercial bank is a financial institution that takes deposits from individuals and businesses, then lends that money primarily to companies rather than to consumers. Unlike a retail bank, which focuses on personal checking accounts, mortgages, and car loans, a commercial bank's main customers are businesses of all sizes—from small contractors to large manufacturers. The bank makes money by charging interest on loans and fees for services like payroll processing, cash management, and trade financing.

Commercial banks are regulated by federal agencies including the Federal Reserve, the Office of the Comptroller of the Currency (OCC), and the Federal Deposit Insurance Corporation (FDIC). They must maintain certain capital reserves and follow lending standards to stay solvent. Most commercial banks also accept deposits from individuals and small businesses, so the line between "commercial" and "retail" banking has blurred over time—many large banks do both.

Key Takeaways

  • Commercial banks lend primarily to businesses and manage corporate cash flow, whereas retail banks focus on personal loans and mortgages.
  • A commercial bank earns revenue through interest on business loans, fees for services like payroll processing, and investment activities.
  • Commercial banks must hold deposits in reserve and follow federal lending rules set by the Federal Reserve and the OCC.
  • Common commercial banking services include lines of credit, equipment financing, trade finance, and cash management for payroll and receivables.
  • The difference between commercial and investment banking matters because commercial banks cannot underwrite securities or engage in proprietary trading under current law.

How commercial banks make money

Commercial banks generate revenue through three main channels: net interest income, fees, and investment returns. Net interest income is the difference between what the bank pays depositors on savings accounts and money market accounts and what it charges borrowers on loans. If a bank pays 0.5% on deposits but charges a business 6% on a term loan, the bank keeps the spread.

Fees come from services beyond lending. A business might pay a monthly fee for a cash management account that sweeps receivables into a central account, or a fee to process payroll for its employees. Trade finance fees cover the cost of issuing letters of credit or guaranteeing payment on international shipments. Investment returns come from the bank's own portfolio—bonds, stocks, and other securities the bank holds.

Commercial banks also earn money by selling loans to other investors. A bank might originate a $5 million equipment loan, then sell it to an insurance company or pension fund and collect an origination fee. This frees up capital for the bank to make more loans.

Types of loans and credit commercial banks offer

A term loan is a fixed amount of money lent to a business for a set period, usually two to ten years. The business repays it in monthly installments with interest. A manufacturer might take a $500,000 term loan to buy machinery, paying it back over five years.

A line of credit works like a credit card for businesses. The bank sets a maximum amount—say $100,000—and the business can borrow and repay as needed. The business pays interest only on the amount it actually uses. This is useful for covering seasonal cash shortfalls or unexpected expenses.

Equipment financing is a loan specifically for buying machinery, vehicles, or other assets. The equipment itself serves as collateral, so the interest rate is usually lower than an unsecured loan. A construction company might finance a new excavator this way.

Trade finance helps businesses buy and sell goods across borders. A letter of credit guarantees that an exporter will be paid even if the foreign buyer defaults. A bank might also finance inventory in transit or provide working capital for import-export operations.

Cash management and payment services

Commercial banks handle the day-to-day movement of money for businesses. A cash management account consolidates deposits from multiple locations into one account, so a retail chain with fifty stores can see all its cash in one place and move money between accounts instantly.

Payroll processing is another core service. The bank deducts payroll taxes, deposits employee paychecks, and files tax returns on behalf of the business. A company with 200 employees might pay the bank $500 to $1,000 per month for this service.

Accounts receivable financing lets a business borrow against invoices it has sent but not yet collected. If a contractor invoices a client for $50,000 but won't receive payment for 60 days, the bank might advance $45,000 immediately, then collect the full $50,000 when the client pays. The business pays interest on the advance.

Commercial banks also process wire transfers, issue checks, and manage merchant services—the systems that accept credit and debit cards in stores and online.

The difference between commercial and investment banking

Under the Glass-Steagall Act (passed in 1933 and partially repealed in 1999), commercial banks and investment banks were legally separate. A commercial bank could lend money but could not underwrite stocks or bonds. An investment bank could help companies issue securities but could not take deposits or make traditional loans.

Today, large financial institutions like JPMorgan Chase and Bank of America operate both commercial and investment banking divisions, but they must keep them separate by law. The commercial side takes deposits and makes loans. The investment side underwrites securities, manages mergers and acquisitions, and trades securities for its own account. This separation exists to prevent conflicts of interest and to protect depositors' money from the risks of securities trading.

A small community bank typically does only commercial banking—it takes deposits and makes loans but does not underwrite securities. A large bank has both divisions, but they operate under different rules and cannot share certain information.

Regulation and capital requirements

Commercial banks must maintain a minimum amount of capital—money the bank owns rather than money it has borrowed—relative to the loans and investments it holds. This is called a capital ratio. The Federal Reserve sets these minimums to ensure banks can absorb losses without failing.

Banks must also undergo regular audits and stress tests. A stress test simulates an economic downturn—rising unemployment, falling asset prices, credit defaults—to see whether the bank would remain solvent. If a bank fails the test, it must raise more capital or reduce its lending.

The FDIC insures deposits up to $250,000 per account holder per bank. This protection covers both personal and business deposits, so a business owner's operating account is protected if the bank fails. Deposits above $250,000 are not insured.

How to choose a commercial bank for your business

If you run a business, the right commercial bank depends on your size, industry, and cash flow patterns. A small contractor might need only a basic business checking account and a line of credit, which any local bank can provide. A manufacturing company with international sales might need trade finance, equipment leasing, and cash management services—services that only larger regional or national banks offer.

Compare interest rates on lines of credit and term loans, but also ask about fees. Some banks charge monthly maintenance fees, wire transfer fees, or fees for account analysis. A bank that charges $50 per wire transfer can cost you thousands per year if you move money frequently.

Relationship matters. A smaller regional bank may offer more personalized service and faster decisions on loans, while a large national bank offers more services under one roof. Ask whether the bank has experience in your industry and whether it can grow with you as your business expands.

Frequently Asked Questions

Is a commercial bank the same as a business bank?

Not exactly. A business bank is any bank that serves businesses, including small businesses. A commercial bank traditionally lends to larger companies, but modern usage treats the terms as roughly interchangeable. The key distinction is that commercial banks focus on business lending rather than consumer lending.

Can I open a commercial bank account as a sole proprietor?

Yes. Most banks offer business accounts to sole proprietors, partnerships, LLCs, and corporations. You will need an Employer Identification Number (EIN) from the IRS, even if you are the only employee. Some banks also accept a Social Security number if you do not have an EIN yet.

What is the difference between a commercial bank and a credit union?

A credit union is a member-owned cooperative, whereas a commercial bank is a for-profit corporation owned by shareholders. Credit unions typically serve a specific group—employees of a company, members of a profession, or residents of a geographic area. Commercial banks serve anyone who meets their account minimums.

Do commercial banks offer business savings accounts?

Yes, most commercial banks offer business savings accounts, money market accounts, and certificates of deposit (CDs). Interest rates are typically lower than on personal accounts because business deposits are larger and more stable. Some banks also offer sweep accounts that automatically move excess cash into higher-yielding investments.

What happens if a commercial bank fails?

The FDIC takes over the bank and either sells it to another bank or liquidates its assets. Deposits up to $250,000 are paid out to depositors within a few business days. Deposits above that amount may recover some funds if the bank's assets sell for enough, but there is no may provide.