How Do Investment Banks Make Money? Revenue Explained

Introduction

Understanding how investment banks generate revenue is one of those fundamental concepts that separates prepared candidates from everyone else. When an interviewer asks "how do investment banks make money?" they're not looking for a one-word answer. They want to see that you understand the economic engine behind the industry you're trying to join, how different divisions contribute to the bottom line, and why certain activities are more profitable than others.

This post breaks down every major revenue stream at a modern investment bank, walks through real fee structures and economics, and shows how revenue actually splits across divisions at firms like Goldman Sachs, JPMorgan, and Morgan Stanley.

Advisory is what most people think of when they hear "investment banking." When a company wants to acquire a competitor, sell a division, restructure its debt, or explore strategic alternatives, it hires an investment bank to advise on the transaction. The bank earns fees for that advice and execution.

M&A advisory fees are typically structured as a combination of a retainer and a success fee. The retainer is a fixed amount (usually $50,000 to $250,000 per month, depending on deal complexity and bank prestige) paid throughout the engagement period to compensate the bank for the time and resources dedicated to the deal. The success fee, which represents the bulk of advisory revenue, is paid only if and when the transaction closes.

Advisory Fee

Compensation paid to an investment bank for providing strategic advice on transactions such as mergers, acquisitions, divestitures, and restructurings. Advisory fees typically include a monthly retainer plus a success fee contingent on deal completion, usually calculated as a percentage of total transaction value. Fee percentages decrease as deal size increases.

Success fees are calculated as a percentage of the total transaction value, and the percentage generally decreases as deal size increases:

These percentages may seem small, but the absolute dollars are enormous. A 0.5% fee on a $20 billion acquisition generates $100 million in advisory fees for the bank. When JPMorgan advised on a major deal, the advisory fee alone can exceed what many companies earn in annual profit.

Restructuring advisory follows a similar fee structure but often includes additional complexity. Banks advising distressed companies may charge hourly rates in addition to retainers, and success fees may be tied to specific outcomes (debt reduction achieved, successful plan of reorganization, avoidance of bankruptcy). Restructuring fees can be particularly lucrative because the work is highly specialized and the number of banks with true restructuring capabilities is limited.

Understanding how M&A deals work from start to finish is critical context for grasping advisory economics. Our breakdown of the M&A process covers the complete timeline and key milestones that drive when and how fees are earned.

Underwriting is the second core investment banking function. When companies need to raise capital by issuing stocks or bonds, investment banks serve as intermediaries, purchasing the securities from the issuer and reselling them to investors. The difference between what the bank pays the issuer and what investors pay is called the gross spread, and it represents the bank's compensation.

Equity underwriting (ECM) involves initial public offerings, follow-on offerings, block trades, and convertible securities. IPO gross spreads are among the highest in the industry:

For context, when a company raises $500 million through an IPO with a 4% gross spread, the underwriting syndicate earns $20 million collectively. The lead bookrunner typically captures the largest share of that fee pool, often 40% to 50%, with co-managers splitting the remainder.

Gross Spread (Underwriting Spread)

The difference between the price at which an investment bank purchases newly issued securities from the issuer and the price at which those securities are sold to investors. The gross spread compensates the bank for underwriting risk, distribution, and management of the offering. It is typically divided into three components: the management fee, the underwriting fee, and the selling concession.

Debt underwriting (DCM) involves issuing investment-grade bonds, high-yield bonds, and arranging leveraged loans. Debt underwriting gross spreads are significantly lower than equity:

While individual debt fees are smaller, the sheer volume of debt issuance makes DCM a major revenue contributor. Global debt issuance routinely exceeds $7 trillion annually, dwarfing equity issuance volumes. A bank that captures even a modest market share of debt underwriting can generate billions in revenue from these relatively thin margins applied to enormous volumes.

You can explore the underwriting process in more detail in our posts on the IPO process and alternative paths to public markets.

For many full-service investment banks, sales and trading generates more revenue than advisory and underwriting combined. This often surprises candidates who associate "investment banking" primarily with M&A, but the numbers tell a clear story.

Market making is the core revenue driver. Banks act as intermediaries in secondary markets, quoting both a bid price (what they'll buy for) and an ask price (what they'll sell for) on thousands of securities. The difference, called the bid-ask spread, generates revenue on each transaction. While individual spreads are small (often fractions of a cent per share in liquid equities), the cumulative volume across millions of daily transactions produces substantial revenue.

Sales and trading is typically organized into two broad categories:

Fixed Income, Currencies, and Commodities (FICC) covers trading in bonds, interest rate products, foreign exchange, and commodities. FICC has historically been the larger revenue driver, though it experienced significant compression after post-2008 regulatory reforms limited proprietary trading and required higher capital charges. Despite this, FICC trading remains a multi-billion dollar business at each major bank.

Equities covers trading in stocks, equity derivatives, prime brokerage services (providing leverage and trade execution to hedge funds), and electronic trading. Equities trading revenue has grown relative to FICC in recent years, driven by increased market volatility and the growth of hedge fund activity. Goldman Sachs reported $4.19 billion in equities trading revenue in Q1 2025 alone, a 27% increase year-over-year, demonstrating the scale of this business.

Prime brokerage is another significant revenue stream within equities trading. Banks provide hedge funds with financing (margin lending), securities lending, trade execution, and operational support. In return, they earn interest on margin loans, fees on securities lending, and commissions on trades. Goldman Sachs and Morgan Stanley dominate prime brokerage, with each generating billions annually from this business.

Asset and wealth management has become an increasingly important revenue stream, particularly for firms like Morgan Stanley (which derives roughly 50% of its revenue from wealth management) and Goldman Sachs (which has been actively growing its asset management platform).

Asset management involves managing investment portfolios on behalf of institutional and retail clients, earning fees calculated as a percentage of assets under management (AUM). Fee rates vary widely by strategy:

The mathematics of scale make this an attractive business. JPMorgan's Asset and Wealth Management division manages approximately $4.8 trillion in AUM. Even at a blended fee rate of 0.25%, that translates to $12 billion in annual management fee revenue before any performance-based compensation.

Assets Under Management (AUM)

The total market value of investments managed by a financial institution on behalf of its clients. AUM is the base on which management fees are calculated and is a key metric for evaluating the scale and growth of an asset management business. Larger AUM generally means higher fee revenue, though fee rates have been declining due to competition from passive investment products.

Wealth management serves high-net-worth and ultra-high-net-worth individuals, providing investment advisory, financial planning, estate planning, and lending services. Revenue comes from advisory fees (typically 0.50% to 1.50% of managed assets), commissions on product sales, and net interest income on client lending (securities-backed loans, mortgages).

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Beyond fee-based revenue, investment banks earn significant income from lending activities and their balance sheets. This revenue stream is often overlooked by candidates but represents a meaningful portion of overall profitability, especially at universal banks like JPMorgan and Bank of America.

Corporate lending generates interest income when banks extend credit facilities (revolving credit lines, term loans) to corporate clients. These relationships often serve as anchoring points for broader advisory relationships: a company that relies on JPMorgan for its credit facility is more likely to hire JPMorgan when it needs M&A advice or wants to issue bonds. The lending relationship and advisory mandate connection is one of the key advantages that universal banks hold over independent advisory firms.

Bridge financing is a specialized lending activity directly tied to investment banking transactions. When a bank advises on a leveraged buyout or acquisition, it may provide temporary "bridge" financing to ensure the deal can close before permanent financing is arranged. Banks earn substantial fees (typically 1% to 3% of the bridge amount) for this service, plus interest income on the outstanding balance. The risk is that bridge loans sometimes get "hung," meaning the bank cannot refinance them into permanent capital, leaving it holding the loan longer than intended.

Securities-based lending and margin lending to wealthy clients and hedge funds generate steady interest income with relatively low risk, since the loans are collateralized by liquid investment portfolios. A wealthy client borrowing against a $50 million stock portfolio to fund a real estate purchase pays interest to the bank while maintaining their investment positions.

The revenue mix varies significantly across firms, reflecting their strategic priorities and business models. Understanding these differences helps you speak intelligently about specific banks during interviews and demonstrates that you understand the why behind "why this bank".

Several patterns emerge from this breakdown:

Goldman Sachs remains the most trading-intensive of the major banks, with its Global Banking & Markets division generating nearly half of total revenue. Goldman reported record revenue of $58.3 billion in 2025, driven by a 9% increase in overall net revenues. The firm's equities franchise is its crown jewel, with Q1 2025 equities revenue of $4.19 billion significantly outpacing competitors.

JPMorgan Chase is the most diversified, with its massive commercial and consumer banking operations generating the bulk of revenue through net interest income. JPMorgan's full-year 2025 net interest income exceeded $100 billion, a figure that dwarfs the advisory and underwriting fees of every other bank. JPMorgan's investment banking division is the industry's largest by league table revenue, but it represents a relatively small slice of the firm's overall earnings.

Morgan Stanley has strategically pivoted toward wealth management, which now accounts for roughly half of revenue. The acquisition of E*Trade (completed in 2020) and Eaton Vance (2021) transformed Morgan Stanley from a trading-heavy firm into one centered on recurring fee-based wealth management revenue, providing more stable and predictable earnings.

Understanding the fee structure is only half the picture. The other half is understanding how banks win the mandates that generate those fees in the first place.

Relationship banking is the foundation. Senior bankers (MDs and Partners) spend years cultivating relationships with corporate executives, board members, and financial sponsors. When a CEO considers an acquisition or a PE firm plans an exit, the banks they call first are typically the ones with whom they have existing relationships. This is why coverage groups are organized by industry: a TMT banker who has covered a tech company for five years is far more likely to win the advisory mandate when that company decides to sell.

Pitching is the formal competitive process. When a company invites banks to compete for a mandate, each bank prepares a detailed pitch book outlining its strategic recommendations, market positioning, relevant experience, and proposed fee structure. The pitch book is essentially a sales document designed to convince the company that your bank is the best choice for the transaction. Understanding pitch book structure and components helps you see what banks actually produce to win business.

League tables play a surprisingly important role in winning mandates. These rankings, compiled by data providers like Dealogic and Refinitiv, track which banks have advised on the most transactions or highest total deal value in a given period. Banks prominently feature their league table rankings in pitch books, and many corporate boards consider league table position when selecting advisors, viewing it as a proxy for market credibility and execution capability.

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Understanding investment banking revenue isn't just academic knowledge. It connects directly to how you answer several common interview questions:

"Why investment banking?" becomes more convincing when you can articulate what the business actually does and why it excites you. Saying "I want to advise companies on transformational transactions" is stronger when you understand that advisory fees are earned through months of intensive strategic work, not just attending a signing dinner.

"Why this bank?" requires understanding how different banks are positioned. Wanting to join Goldman Sachs because of its dominant trading franchise makes sense. Wanting to join Morgan Stanley because of its wealth management transformation shows awareness of the firm's strategic direction.

"How do investment banks make money?" is sometimes asked directly as a technical question, and a comprehensive answer covering advisory, underwriting, trading, and asset management immediately signals that you've done your homework. Most candidates only mention advisory fees and stop there.

The economics of investment banking also help explain practical realities about the job. Banks work their analysts hard because the fee structure creates enormous operating leverage: a team of five people advising on a deal that generates $50 million in fees is extraordinarily profitable, but only if the team can handle the volume and intensity required to close the transaction.

Understanding revenue economics also helps you evaluate exit opportunities. If you know that private equity firms earn carry on successful investments and that hedge funds earn performance fees on trading profits, you can articulate why you're interested in those buy-side paths with real economic literacy rather than vague aspirations. Bankers who understand the economics of their own industry and the industries they might join are the ones who have the most credible narratives in interviews and networking conversations.