Investment bankers advise companies and governments on major financial deals, then take a percentage of the money that moves

An investment banker is not a banker in the sense of taking deposits or lending money to individuals. Instead, investment bankers work for large financial firms and help organizations raise money, buy other companies, or sell themselves. They earn fees — usually a percentage of the total deal value — when those transactions close.

The work breaks into a few main categories: helping companies go public (called an IPO or initial public offering), advising on mergers and acquisitions (when one company buys another), and raising debt or equity capital (borrowing money or selling ownership stakes). A banker might spend weeks building financial models, writing pitch documents, and meeting with potential buyers or investors before a deal even happens. If the deal closes, the bank takes its cut. If it doesn't, the banker typically gets paid a salary but no bonus.

Key Takeaways

  • Investment bankers earn fees when deals close, usually a percentage of the total transaction value, which can range from under 1% for large debt offerings to 5% or more for smaller mergers.
  • The main deal types are IPOs (taking a company public), mergers and acquisitions (one company buying another), and capital raises (borrowing or selling ownership).
  • Most investment bankers work in one of two divisions: corporate finance (advising on deals) or sales and trading (buying and selling securities for clients or the bank's own account).
  • Entry-level bankers spend most of their time building spreadsheets and pitch books; senior bankers spend time meeting clients and closing deals.

How Investment Banks Make Money on Deals

Investment banks charge a fee when a transaction closes. The fee is almost always a percentage of the deal value, and the exact percentage depends on the deal type and size. For a merger where Company A buys Company B for $100 million, the investment bank might charge 1% to 2%, earning $1 million to $2 million. For a smaller deal or a more complex one, the percentage can be higher.

The bank also makes money by underwriting securities. When a company goes public or issues bonds, the investment bank buys those securities from the company at a discount, then sells them to investors at a higher price. The difference is the bank's profit. For an IPO, this spread is typically 3% to 7% of the total offering size.

A third revenue stream is advisory fees. Some clients pay the bank a flat fee or hourly rate just to study a potential deal — whether to buy a competitor, how much to offer, what the risks are — without committing to hire the bank to run the transaction itself. These fees are smaller but come in even if the deal never happens.

The Two Main Divisions: Corporate Finance and Sales and Trading

Corporate finance is the division most people think of when they picture investment banking. These bankers advise companies on mergers, acquisitions, and going public. They build financial models showing what a deal is worth, write pitch books (glossy presentations to show potential buyers or investors), and manage the process from start to finish. A corporate finance banker might spend three months helping a software company decide whether to buy a smaller competitor, then another two months running the auction process to find the best buyer.

Sales and trading is different. These bankers buy and sell stocks, bonds, and other securities. Some of that trading is for clients — a pension fund calls and asks to buy $50 million of a particular bond, and the sales trader executes that trade and takes a commission. Some is for the bank's own account — the trader thinks a stock is undervalued, buys it, and profits when the price rises. Sales and trading is more fast-paced and numbers-driven than corporate finance, and compensation is often tied directly to how much money the trader makes or saves.

Both divisions exist in most large investment banks, though some smaller or specialized firms focus on one or the other.

What Investment Bankers Do Day to Day

The work varies sharply by seniority. An analyst — the entry-level role, usually filled by college graduates — spends most of their time building financial models in Excel, pulling data from company filings, and creating pitch presentations. They might work 60 to 80 hours a week, often late into the night, because senior bankers need materials ready for client meetings the next morning. Analysts rarely meet clients directly.

An associate (usually someone with an MBA or three to five years of analyst experience) starts to lead smaller deals and meet with clients, but still spends significant time on modeling and writing. They manage analysts and begin to develop relationships with corporate clients.

A vice president or director spends most of their time on client relationships and deal strategy. They pitch new business to companies, negotiate terms with other banks and buyers, and make the key decisions about how to structure a transaction. They rely on analysts and associates to do the detailed work.

A managing director is a senior partner-level role. These bankers bring in major clients, close the biggest deals, and set strategy for their team or division. They spend time on business development — taking clients to dinner, speaking at conferences, building their reputation in their industry.

How Much Investment Bankers Earn

Compensation has two parts: salary and bonus. Salary is fixed and modest — an analyst might earn $80,000 to $100,000 per year at a major bank, an associate $150,000 to $200,000. The bonus is where the real money is, and it depends entirely on how much revenue the banker's deals generated.

At a top-tier bank, an analyst's bonus might be $50,000 to $150,000 in a good year, or close to zero in a bad year when deal flow is slow. An associate might earn a $200,000 to $500,000 bonus. A vice president or director can earn $500,000 to several million dollars in bonus in a strong year. Managing directors at major banks can earn tens of millions if they bring in and close large deals.

The bonus pool shrinks when the market is weak and fewer deals happen. During the 2008 financial crisis, many bankers received no bonus at all, even though they kept their salary. Conversely, in years when mergers and IPOs are booming, bonuses can be enormous.

Investment Banking vs. Other Finance Roles

Investment banking is different from commercial banking, where bankers take deposits from individuals and businesses and lend that money out. A commercial banker might help a small business get a loan; an investment banker helps a large company raise $500 million by issuing bonds.

It is also different from asset management or hedge funds, where the goal is to invest money on behalf of clients or the firm itself and earn returns. An asset manager buys and holds stocks or bonds; an investment banker advises on transactions and takes a fee when they close.

Within investment banking, private equity is a related but distinct field. Private equity firms use investment bankers' advice to identify and buy companies, then try to improve them and sell them for a profit years later. A private equity firm might hire an investment bank to help value a target company and negotiate the purchase price.

Why Companies Hire Investment Banks

Companies hire investment banks because they have expertise, relationships, and credibility that the company does not have in-house. A mid-sized manufacturing company that wants to acquire a competitor might have no experience running an auction process, valuing the target, or negotiating with other potential buyers. An investment bank has done this dozens of times and knows the market, the likely buyers, and what price is realistic.

Investment banks also bring credibility. When a company announces it is going public, investors are more confident if a well-known investment bank is underwriting the IPO — the bank's reputation is on the line, so they have vetted the company. Similarly, when a bank advises on a merger, both sides trust that the bank has done rigorous financial analysis.

Finally, investment banks have distribution — relationships with investors, other companies, and lenders. When a company needs to raise money, the bank can reach out to hundreds of potential investors. When a company wants to sell itself, the bank knows which other companies might be interested.

Frequently Asked Questions

Do investment bankers actually work 100-hour weeks?

Analysts and associates at major banks often work 60 to 80 hours per week, sometimes more during deal crunch periods. The 100-hour weeks are real but not constant — they happen when a deal is closing or a pitch is due. Slower periods exist, though bankers are expected to be available on short notice. Senior bankers work fewer hours but are on call constantly.

What degree do you need to become an investment banker?

Most analysts have a bachelor's degree in finance, economics, business, or mathematics. Some banks recruit from other majors if the candidate has strong quantitative skills. An MBA is not required for entry-level roles but is common for the associate level. Many bankers pursue the CFA (Chartered Financial Analyst) credential later in their career.

Can you make money as an investment banker if deals don't close?

Yes, but much less. Bankers receive a salary regardless of deal outcomes. Bonuses, which make up the majority of compensation, depend on closed deals. In years with few transactions, bonuses are small or zero. Some advisory work pays fees upfront, but most investment banking revenue comes only when a deal closes.

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

Commercial banks take deposits from individuals and businesses and lend money out. Investment banks advise on large corporate transactions and raise capital by issuing securities. Some large financial institutions have both divisions — JPMorgan Chase, for example, has both commercial and investment banking arms.

How do investment bankers decide what a company is worth?

Bankers use several methods: comparing the company to similar companies that recently sold (comparable transactions), looking at what similar public companies trade for (comparable companies), and projecting the company's future cash flows and discounting them to today's value (discounted cash flow). They build models in Excel showing different scenarios and present a range of possible values to the client.