Investment banks handle large financial deals, not everyday deposits

An investment bank is a financial institution that arranges major transactions for corporations, governments, and wealthy individuals—not a place where you keep your checking account. While a regular bank takes deposits, makes loans, and processes payments, an investment bank buys and sells securities, arranges mergers and acquisitions, underwrites stock offerings, and trades bonds and other complex financial instruments.

The core difference is who the customer is and what they need. A regular bank serves individuals and small businesses with mortgages, car loans, and savings accounts. An investment bank serves large organizations that need to raise billions of dollars, buy other companies, or restructure their finances. The two operate under different rules, hold different licenses, and make money in different ways.

If you have a regular bank account, you will never directly use an investment bank. But if you own stock in a company or hold a mutual fund, an investment bank likely played a role in creating or trading those products behind the scenes.

Key Takeaways

  • Investment banks arrange major financial deals for corporations and governments, while regular banks handle deposits and loans for individuals and small businesses.
  • Investment banks make money through fees on deals, trading profits, and advisory services—not from interest on deposits like regular banks do.
  • The largest investment banks often own retail banking divisions, so one company name can operate both sides under different licenses.
  • Investment banking is a separate career path with different skills and education than retail banking, and the work involves much larger sums of money.

The main services investment banks provide

Investment banks handle four broad categories of work. Underwriting means they help a company issue new stock or bonds to raise money. The bank buys the securities from the company and then sells them to investors, taking a cut of the proceeds. Mergers and acquisitions (M&A) means they advise one company on buying another, handle negotiations, and structure the deal. Trading means they buy and sell stocks, bonds, currencies, and derivatives for their own profit or on behalf of clients. Advisory services

A single investment bank may do all four, or it may specialize in one or two. Some investment banks focus only on advisory work and do not trade. Others are primarily trading operations. The largest banks—JPMorgan Chase, Goldman Sachs, Bank of America, Morgan Stanley, and Citigroup—do all of it.

How investment banks make money

Investment banks earn revenue through fees, trading profits, and interest income. When they underwrite a stock offering, they charge a percentage of the money raised—typically 3 to 7 percent depending on the deal size and complexity. When they advise on a merger, they charge a flat fee or a percentage of the deal value. When they trade securities, they keep the profit from buying low and selling high. Some investment banks also take deposits and make loans, which generates interest income like a regular bank.

The fee structure creates an incentive to do bigger deals. A bank that advises on a $10 billion acquisition makes far more than one that advises on a $100 million one, even though the work may be similar. This is why investment banks compete fiercely for large clients and why they employ teams of specialists in different industries.

The difference between investment banking and retail banking

Retail banking is the side you interact with: checking accounts, savings accounts, mortgages, car loans, credit cards. Investment banking is the side that handles institutional clients and capital markets. A single company like JPMorgan Chase operates both, but they are legally separate divisions with different licenses, different regulators, and different rules about what they can do with customer money.

Retail banks are heavily regulated to protect deposits. The Federal Deposit Insurance Corporation (FDIC) insures deposits up to $250,000 per account holder per bank. Investment banks do not take insured deposits and are not subject to the same deposit protection rules. Instead, they are regulated by the Securities and Exchange Commission (SEC) and other bodies that oversee securities trading and capital markets.

The separation exists because of the 2008 financial crisis. Before 1999, investment banking and retail banking were legally separated under the Glass-Steagall Act. When that law was repealed, large banks were allowed to combine both operations. The 2008 crisis showed that this combination created risk—if the investment side failed, it could drag down the retail side and threaten customer deposits. Today, large banks must maintain firewalls between the two divisions and hold enough capital to survive losses on the investment side without affecting retail customers.

Who works at an investment bank

Investment banking is a career path distinct from retail banking. Entry-level positions are called analysts and typically require a bachelor's degree in finance, economics, or mathematics. Analysts work 60 to 100 hours per week building financial models, analyzing deals, and preparing presentations. After two to three years, an analyst may be promoted to associate, then to vice president, then to managing director.

The pay is significantly higher than retail banking. An analyst at a major investment bank earns a base salary of $80,000 to $120,000 plus a bonus that can equal or exceed the base. Managing directors earn millions. The high pay reflects the size of the deals, the pressure to perform, and the expectation that you will work long hours and be on call for clients.

Investment banking also requires different skills. You need to be comfortable with complex financial analysis, able to work under pressure, and skilled at client management and negotiation. Retail banking requires customer service skills and attention to detail, but the work is more routine and the stakes are lower per transaction.

Types of investment banks

Investment banks range from global giants to boutique firms. The bulge bracket banks—JPMorgan Chase, Goldman Sachs, Bank of America, Morgan Stanley, Citigroup, and a few others—handle the largest deals and have offices worldwide. They have thousands of employees and do all types of investment banking work.

Middle-market banks like Lazard, Evercore, and Greenhill focus on smaller deals and often specialize in advisory work rather than trading. They typically have hundreds of employees and serve mid-sized companies. Boutique banks are small, specialized firms that focus on one industry or one type of deal—for example, a bank that only advises on healthcare mergers or technology IPOs. Boutique banks often have fewer than 100 employees but can command high fees because of their expertise.

Investment banks versus private equity and hedge funds

Investment banks are often confused with private equity firms and hedge funds, but they are different. A private equity firm uses investor money to buy companies, improve them, and sell them for a profit. A hedge fund uses investor money to trade securities and derivatives with the goal of making returns regardless of whether the market goes up or down. An investment bank arranges deals and trades securities, but it is primarily a service provider—it makes money from fees and trading profits, not from managing other people's money as a long-term investment.

That said, the lines blur. Many large investment banks own private equity divisions and hedge funds. Goldman Sachs has a private equity arm. JPMorgan Chase manages hedge funds. But the core business of an investment bank is still arranging deals and trading, not managing long-term investment portfolios.

Frequently Asked Questions

Can I open an account at an investment bank?

Most investment banks do not offer retail accounts to individuals. They focus on institutional clients like corporations, governments, and pension funds. However, some large banks like JPMorgan Chase and Bank of America have retail divisions where you can open a checking account. If you want to invest in stocks or bonds, you use a brokerage firm or a robo-advisor, not an investment bank directly.

Do investment banks handle mortgages?

Large investment banks often have retail divisions that offer mortgages, but the mortgage business is separate from the investment banking side. JPMorgan Chase and Bank of America both originate mortgages through their retail divisions. The investment banking side may trade mortgage-backed securities, but it does not directly lend to homebuyers.

What is the difference between an investment bank and a commercial bank?

A commercial bank takes deposits, makes loans, and processes payments for individuals and businesses. An investment bank arranges large financial deals and trades securities. Many large banks operate both divisions. A commercial bank is regulated to protect deposits; an investment bank is regulated to ensure fair markets and prevent fraud.

How do investment banks make money from trading?

Investment banks trade securities—stocks, bonds, currencies, derivatives—and keep the profit from the difference between the buy price and the sell price. They also earn money by acting as a middleman: a client wants to buy a large block of stock, and the bank buys it first, then sells it to the client at a slightly higher price. The spread is the bank's profit.

Is investment banking the same as wealth management?

No. Investment banking arranges deals and trades securities for institutional clients. Wealth management advises high-net-worth individuals on how to invest and manage their money. A large bank may have both divisions. Wealth managers work with individuals; investment bankers work with corporations and governments.