Investment banking is the business of helping companies and governments raise money and manage large financial deals

Investment banks sit between organizations that need capital and the investors or lenders who have money to put to work. They advise on mergers and acquisitions, underwrite stock and bond offerings, trade securities, and structure complex financial transactions. Unlike retail banks that take deposits from individuals and make loans, investment banks focus almost entirely on institutional clients—corporations, governments, pension funds, and other large investors.

The work breaks into a few main categories. Advisory services means helping a company decide whether to buy another company, sell itself, or restructure its debt. Capital markets means underwriting—taking on the risk of selling a company's new stock or bonds to investors, or trading those securities after they're issued. Researchasset management divisions, though that function is increasingly separate.

Key Takeaways

  • Investment banks help large organizations raise money and execute major financial transactions, not individuals or small businesses.
  • The main revenue streams are advisory fees on deals, underwriting fees on new stock and bond offerings, and trading profits.
  • Entry-level positions typically require a bachelor's degree and often lead to analyst or associate roles in a specific division.
  • Investment banking careers are known for long hours, high pay, and rapid advancement for those who stay, but also high burnout rates.
  • The industry is concentrated in major financial centers like New York, London, and Hong Kong, though remote work has expanded options.

How investment banks make money

Investment banks generate revenue in three main ways. Advisory fees come from helping clients plan and execute deals—typically a percentage of the transaction value, ranging from less than 1% on very large deals to several percent on smaller ones. A bank advising on a $500 million acquisition might earn $5 to $15 million depending on the complexity and the client's negotiating power.

Underwriting fees come from bringing new securities to market. When a company wants to issue stock for the first time (an IPO) or issue new bonds, the investment bank buys the securities from the issuer at a set price, then sells them to investors at a higher price. The spread is the bank's profit, typically 3% to 7% of the offering size. The bank also charges an explicit underwriting fee on top.

Trading profits

The main divisions and what they do

Mergers and Acquisitions (M&A) is the advisory side. M&A bankers work with company executives to identify targets, value them, negotiate terms, and structure the deal to minimize taxes and regulatory risk. They spend time in meetings and on the phone with clients, building financial models, and writing pitch books to win new business. The work is project-based—intense during deal execution, slower between deals.

Equity Capital Markets (ECM) handles stock offerings. ECM bankers help companies go public or issue new shares, manage the roadshow (pitching to investors), and coordinate with underwriters and legal counsel. Debt Capital Markets (DCM) does the same for bonds and loans. Both divisions work closely with the sales and trading teams to place securities with investors.

Sales and Trading is where the bank buys and sells securities on behalf of clients and itself. Traders sit at desks watching screens, executing orders, and managing risk. Sales people call institutional clients—pension funds, hedge funds, mutual funds—to pitch trades and market ideas. This division generates the most revenue at most banks but also carries the most risk.

Research produces reports analyzing companies, industries, and markets. Analysts cover specific sectors and publish earnings forecasts, valuations, and buy/sell recommendations. Research supports the sales and trading teams (clients want to know what the bank thinks before they trade) and the advisory teams (they use research to value companies in deals).

Entry-level roles and typical career paths

Most people enter investment banking as an analyst after finishing a bachelor's degree. Analysts build financial models, prepare presentations, conduct research, and handle administrative work on deals. The role is a training ground—you learn the technical skills and the culture, and you decide whether you want to stay. Analyst programs typically last two to three years.

After analyst, the next step is associate, usually requiring an MBA or equivalent experience. Associates manage analysts, own pieces of client relationships, and start to pitch ideas and lead smaller deals. The jump from analyst to associate is the biggest career hurdle—many people leave the industry rather than pursue an MBA for this step.

Vice President comes next, followed by Director and Managing Director. At VP level and above, your job is increasingly about bringing in clients and winning deals, not executing them. Managing Directors are the senior partners—they own major client relationships and are compensated partly through profit-sharing.

Career progression is faster in investment banking than in most industries. An analyst can become a VP in six to eight years if they perform well and stay. But the path is also narrow—if you don't make the jump to associate, or if you don't make VP, you typically leave the industry rather than plateau.

What the day-to-day work actually looks like

An analyst's typical day involves building spreadsheets, updating pitch decks, and attending client calls. You might spend four hours refining a valuation model, two hours in meetings, and two hours on administrative tasks like organizing documents or coordinating with lawyers. Nights and weekends are common—if a client needs an updated analysis by morning, you work until it's done.

The hours are the industry's most visible feature. Analysts often work 60 to 80 hours per week, with occasional weeks pushing 100 hours during deal execution. Associates work less but still regularly work nights and weekends. The intensity varies by division—M&A advisory tends to have longer hours than research, and trading hours are more predictable (you leave when the market closes) but more stressful.

The work itself is a mix of technical and interpersonal. You need to be comfortable with financial modeling, valuation, and accounting. But you also need to manage client relationships, present ideas clearly, and work effectively in teams under pressure. The best analysts are organized, detail-oriented, and able to communicate complex ideas simply.

Pay, bonuses, and total compensation

Base salary for an analyst at a major bank is typically $80,000 to $100,000 per year, depending on location and the bank's tier. The real money is in the bonus, which can range from 50% to 200% of base salary depending on performance, the division, and market conditions. A strong analyst might earn $150,000 to $200,000 total in a good year; a weak one might earn $90,000 to $110,000.

Associates earn $150,000 to $200,000 base, with bonuses of $100,000 to $300,000 or more. VPs earn $250,000 to $500,000 base plus larger bonuses. Managing Directors at major banks can earn millions, though that compensation is heavily dependent on the deals they bring in and the revenue their team generates.

Compensation is heavily back-loaded toward bonus, which creates both opportunity and risk. In a strong market, bonuses can double your total pay. In a weak market or if your division underperforms, bonuses can shrink by 50% or more. This volatility is one reason people leave the industry—the pay is high but unpredictable.

Why people leave investment banking

Despite the pay, investment banking has high turnover. Analysts often leave after two to three years because the hours are unsustainable, the work feels repetitive, or they want to pursue other interests. The burnout is real—working 70-hour weeks for years takes a toll on health, relationships, and mental health.

People who leave typically move to corporate finance (managing a company's finances from inside), private equity (buying and managing companies), venture capital (investing in startups), or completely different fields like consulting or law. The skills transfer well—financial modeling, deal experience, and client management are valuable everywhere.

Some people stay and build long careers, especially if they move into leadership or find a division that suits them better. Trading can be less hour-intensive than advisory. Research offers more intellectual depth. Asset management offers more stability. But the industry's structure—up or out, with big jumps in responsibility and compensation—means most people either advance quickly or leave.

Where investment banking jobs are located

Investment banking is concentrated in major financial centers. New York is the largest hub, home to most of the largest banks' headquarters and major offices. London is the second-largest center, especially for European and Middle Eastern deals. Hong Kong, Singapore, and Tokyo are major centers for Asia-Pacific business. Other significant hubs include San Francisco (for tech banking), Chicago, and Toronto.

Remote work has expanded since 2020, but investment banking remains office-heavy compared to other industries. Analysts and associates are typically expected to be in the office most days, especially during deal execution. Senior bankers have more flexibility. If you want to work in investment banking, you'll likely need to relocate to one of these centers, at least early in your career.

Frequently Asked Questions

Do I need an MBA to work in investment banking?

No for entry-level analyst roles—a bachelor's degree is sufficient. But to advance from analyst to associate, most banks require an MBA or equivalent work experience at another financial institution. Some people skip the MBA by moving to private equity or corporate finance as an analyst, then returning to banking later.

What undergraduate major should I study?

Finance, economics, accounting, and mathematics are common, but banks hire from all majors. What matters more is demonstrating financial literacy, analytical thinking, and the ability to learn quickly. Many successful bankers studied engineering, physics, or even humanities—the major matters less than the skills and the internship experience you build.

How do I break into investment banking without connections?

Internships are the primary route. Most banks hire summer interns from college, and strong interns often receive full-time offers. If you don't have family connections, focus on getting an internship—apply to programs at major banks, smaller regional banks, or boutique firms. Networking events, campus recruiting, and cold outreach to alumni also work.

Is investment banking the same as commercial banking?

No. Commercial banks take deposits from individuals and businesses, make loans, and offer basic financial services. Investment banks help large organizations raise capital and execute deals. Some large institutions like JPMorgan Chase and Bank of America have both divisions, but they operate separately with different clients, products, and cultures.

What's the difference between investment banking and private equity?

Investment bankers advise on deals and take fees; private equity investors buy companies and own them for years, trying to improve operations and sell at a profit. Private equity pays more but requires you to commit capital and live with the outcome. Many people work in banking first, then move to private equity once they have deal experience.