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

A commercial bank is a financial institution that takes deposits from individuals and businesses, then lends that money out—mostly to companies rather than to people buying homes or cars. The bank makes money on the difference between what it pays depositors in interest and what it charges borrowers. Commercial banks also handle payroll processing, cash management, and other services that help businesses run day-to-day operations.

The distinction matters because commercial banking is separate from retail banking (which serves individuals) and investment banking (which handles stock offerings and mergers). A single large bank may do all three, but the commercial division focuses on business clients—from small shops to Fortune 500 companies.

Key Takeaways

  • Commercial banks lend primarily to businesses and manage their operating accounts, not to individuals buying homes or cars.
  • A commercial bank earns money by charging interest on loans at a higher rate than it pays on deposits.
  • Commercial banks offer services like payroll processing, cash management, and trade financing that retail banks do not.
  • The Federal Reserve regulates commercial banks and sets rules about how much money they must hold in reserve.
  • Your personal bank account may be at a commercial bank, but that is the retail side of the business.

How commercial banks make money

Commercial banks generate revenue through net interest margin—the spread between the interest rate they pay depositors and the rate they charge borrowers. If a bank pays 0.5% on a business checking account and lends money to a company at 6%, the difference is profit. The larger the loan portfolio and the wider the spread, the more money the bank makes.

Beyond interest, commercial banks charge fees for services: monthly account maintenance, wire transfers, overdraft protection, and merchant processing. Some banks also earn money by selling financial products like insurance or investment services to their business customers.

Types of loans commercial banks offer

Commercial banks provide several categories of business lending. A term loan is a fixed amount borrowed for a set period, typically repaid in monthly installments—used for equipment purchases or expansion. A line of credit works like a business credit card: the company borrows only what it needs, up to a limit, and pays interest only on the amount drawn.

Trade financing helps businesses buy and sell goods internationally by guaranteeing payment to suppliers before the buyer receives the shipment. Equipment financing lets a company borrow money specifically to buy machinery or vehicles, with the equipment itself serving as collateral. Commercial real estate loans fund the purchase or renovation of office buildings, warehouses, and retail spaces.

Services beyond lending

Commercial banks do far more than lend money. They process payroll for thousands of employees at once, moving wages from the employer's account to workers' accounts on a set schedule. They manage cash flow for large companies—collecting payments from customers, paying bills to suppliers, and optimizing when money moves in and out.

Banks also provide merchant services, processing credit and debit card payments when customers buy from a business. They handle letters of credit for international trade, guaranteeing that payment will be made when goods arrive. Many commercial banks offer treasury services, helping large companies manage currency risk and invest excess cash.

How the Federal Reserve regulates commercial banks

The Federal Reserve sets rules that commercial banks must follow. Banks must hold a minimum amount of capital (money they own, not borrowed) relative to the loans they make—this is called a capital requirement. The Fed also sets the discount rate, the interest rate at which banks can borrow from the Fed itself, which influences the rates banks charge customers.

Commercial banks must report their financial condition regularly to the Fed and submit to inspections. The Fed can restrict how much a bank lends, require it to raise more capital, or—in extreme cases—shut it down if it becomes insolvent. This oversight exists to prevent bank failures that would harm depositors and the broader economy.

The difference between commercial and retail banking

Retail banking serves individuals: personal checking and savings accounts, mortgages, auto loans, credit cards. Commercial banking serves businesses: operating accounts, business loans, payroll processing, trade financing. A bank customer who owns a small business might use both sides—a personal account at the retail division and a business account at the commercial division.

The sales process is different too. Retail banks advertise to the public and open accounts in branches. Commercial banks have relationship managers who work directly with business owners and finance directors, often meeting in person to understand the company's needs and structure loan packages accordingly.

Why commercial banking matters to the broader economy

Commercial banks are the primary source of credit for most businesses. Without access to commercial bank loans, companies cannot expand, buy equipment, or hire new workers. When commercial banks tighten lending—because they are worried about losses or because the Fed restricts their capital—businesses struggle to grow, and the economy slows.

During recessions, commercial banks often reduce lending sharply, which deepens the downturn. During expansions, they lend aggressively, which can fuel growth but also create risk if loans go bad. The health of commercial banking is a leading indicator of economic health.

Frequently Asked Questions

Is my bank a commercial bank if I have a personal account there?

Probably yes. Most large banks operate both retail and commercial divisions. Your personal checking account is handled by the retail side, but the same institution lends to businesses through its commercial division. The bank's name does not tell you which side you are on—it depends on the type of account you hold.

Can a small business get a loan from a commercial bank?

Yes. Commercial banks lend to businesses of all sizes, though small businesses may face stricter requirements and higher interest rates than large corporations. Many commercial banks have small business lending programs with streamlined approval processes. The Small Business Administration also backs some loans, which reduces the bank's risk and makes approval easier.

What happens if a commercial bank fails?

The Federal Deposit Insurance Corporation (FDIC) insures deposits up to $250,000 per account holder per bank. If a commercial bank fails, the FDIC pays depositors up to that limit. Businesses with deposits above $250,000 may lose the excess. The FDIC also arranges for another bank to take over the failed bank's operations to minimize disruption.

Why do commercial banks charge different interest rates to different businesses?

Interest rates reflect risk. A company with strong cash flow and a long history of repayment gets a lower rate than a startup with no track record. The bank also considers the loan size, the industry, and whether the loan is secured by collateral. Larger loans often carry lower rates because the bank's cost to process them is spread across more money.

Do commercial banks invest in the stock market?

Commercial banks can invest in stocks and bonds, but they are restricted by law from using deposits to trade for their own profit. They can hold securities as part of their investment portfolio and may offer investment services to business customers. Investment banking—underwriting stock offerings and advising on mergers—is a separate division with different rules.