Investment firms make money from far more than the advisory fee on your statement. A typical firm stacks revenue from a percentage charge on assets under management, expense ratios embedded in the mutual funds and ETFs it recommends, spreads on trades and payments from market makers for routing your orders, interest on margin loans and fees for lending out your shares, the spread it keeps on your uninvested cash, performance fees on private funds, underwriting and advisory work for companies, and soft dollar arrangements that bundle research into trading commissions. Most of these charges never generate a bill you can see.
Advisory Fees You Can See on Your Statement
The clearest revenue line is the asset management fee: a fixed annual percentage of everything the firm manages for you. Most advisory firms charge between 0.50% and 2.00% of assets under management, with the median around 1% to 1.5%. A firm running $500 million in client accounts at a 1% average earns $5 million a year regardless of what the market does.
Fees are usually billed quarterly, either in advance or in arrears, and calculated against your account’s market value at the start or end of the billing period.1SEC.gov. Division of Examinations Observations: Investment Advisers’ Fee Calculations Registered investment advisers must file Form ADV, which spells out how they charge, what conflicts of interest exist, and any disciplinary history.2SEC.gov. Form ADV Part 2A Part 2A of that form describes the fee schedule, explains whether fees are deducted from your account or billed separately, and discloses whether advisers receive compensation for selling products. You can request it before signing anything.
Tiered Fee Schedules
Many firms use tiered pricing. A firm might charge 1.25% on the first $500,000, 1.00% on the next $500,000, and 0.75% above $1 million. The math works like income tax brackets: only the dollars within each tier are charged at that tier’s rate, so the blended fee on a $1.5 million account in that example comes out to about 1.00%. Ask whether the firm uses blended tiers or a flat rate on the whole balance, because the difference compounds over decades.
Wrap Fee Programs
Some firms bundle advisory services, trade execution, custody, and reporting into a single wrap fee, typically 1% to 3% of managed assets.3SEC.gov. Observations from Examinations of Investment Advisers Managing Client Accounts That Participate in Wrap Fee Programs The appeal is simplicity. The risk is that if you trade rarely, you’re paying for execution you aren’t using. SEC examinations have flagged cases where wrap fee clients were placed into mutual funds or ETFs carrying their own internal expenses on top of the wrap charge, effectively doubling the fee layers.
Fund Expense Ratios and 12b-1 Fees
When a firm manages a mutual fund or ETF instead of an individual account, its revenue comes through the fund’s expense ratio, an annual percentage deducted directly from the fund’s assets. You never see a bill. The money comes out of the fund’s returns before they’re reported to you. As of 2024, the average expense ratio for actively managed equity mutual funds was about 0.40%, index equity ETFs averaged roughly 0.14%, and some actively managed funds still charge over 1.00%.
The expense ratio bundles several costs. The management fee paid to the portfolio managers is the largest piece. On top of that sit administrative, custodial, legal, and accounting costs. Marketing and distribution show up as 12b-1 fees, capped at 1% of fund assets per year.4FINRA. Mutual Funds Those fees pay for advertising, compensating brokers who sell the fund, and certain shareholder services. Class A shares typically carry around 0.25% in 12b-1 fees; Class B and Class C shares often carry the full 1%.
Spreads, Commissions, and Payment for Order Flow
Firms that execute trades capture revenue through commissions and through the bid-ask spread. The spread is the gap between the highest price a buyer will pay and the lowest a seller will accept. For a stock with a $50.00 bid and a $50.03 ask, the firm acting as a market maker pockets three cents per share when it fills both sides. Three cents sounds trivial until you multiply it across millions of shares a day. Market makers hold inventories of securities to provide that liquidity, buying at the bid and selling at the ask. For thinly traded stocks the spread widens, because the market maker faces more risk holding inventory.
When you place a trade through a commission-free brokerage, the firm still gets paid. Most zero-commission brokers sell your order to a wholesale market maker, a practice called payment for order flow. The wholesaler pays the broker for the right to fill your order and then profits from the spread. PFOF remains legal in the United States and is a significant source of revenue for retail brokers.5SEC.gov. How Does Payment for Order Flow Influence Markets
The amounts vary widely by broker. Research from Wharton found that the same wholesale firm paid one broker $0.10 per hundred shares while paying another $0.75 per hundred shares. The higher-paying arrangement came with zero price improvement for customers; the lower-paying one delivered better execution quality. Some brokers accept higher PFOF payments in exchange for worse fills.
Brokerage firms must file quarterly reports under SEC Rule 606 disclosing where they route customer orders, what payments they receive from each trading venue, and the terms of any arrangement that influences routing.6eCFR. 17 CFR 242.606 – Disclosure of Order Routing Information The reports break payments down by order type and include the net dollar amount both in total and per share. They’re public and posted on each broker’s website.
Interest on What You Borrow and What You Hold
Firms with brokerage operations generate substantial revenue by lending money and securities. Clients who buy stocks on margin borrow from the broker at interest rates that vary by loan size, with larger balances getting lower rates. At one major brokerage in 2025, rates ran roughly 4% to 6%. Smaller platforms often charge toward the higher end, sometimes exceeding 10% on small margin balances. The Federal Reserve’s Regulation T governs how much credit brokers can extend for securities purchases.7eCFR. 12 CFR Part 220 – Credit by Brokers and Dealers (Regulation T)
Margin lending is profitable partly because the collateral is already sitting in the brokerage account. If your account value drops below the firm’s maintenance requirement, you get a margin call. Firms are not required to call you before selling your holdings. FINRA’s rules allow the firm to liquidate assets without prior notice and to sell more than enough to cover the call, potentially paying off your entire loan balance in one move.8FINRA. Know What Triggers a Margin Call
Securities Lending
Firms also lend out shares held in client accounts to short-sellers, who pay a borrowing fee for temporary use of the shares. The fee depends on how hard the stock is to borrow. Widely held, liquid stocks might command only a few basis points, while hard-to-borrow stocks with heavy short interest can carry annualized fees of 10%, 30%, or higher. Some brokerages run “fully paid lending” programs where clients opt in and split the revenue, often 50/50. Shares on loan are no longer protected by SIPC coverage.
The Cash Sweep Spread
One of the least visible revenue sources is the spread firms earn on uninvested cash. When cash sits in your brokerage account, the firm sweeps it into a bank deposit program or money market fund. The firm earns interest on that cash at prevailing rates but passes only a fraction along to you. When the federal funds rate sat above 5% in 2023 and 2024, some firms paid clients as little as 0.3% to 0.5% while earning several percentage points on the same cash. One estimate put industrywide cash sweep revenue at roughly $15 billion a year.
The economics work because brokerage firms hold enormous pools of client cash. A 2% spread on $50 billion in swept deposits produces $1 billion in annual revenue with essentially no risk. The dollars matter to clients too. If you keep $50,000 in a brokerage sweep paying 0.5% while a money market fund at the same firm pays 4.5%, that’s $2,000 a year you’re giving up. Checking your sweep rate is one of the simplest ways to stop overpaying.
Performance Fees and Carried Interest
Hedge funds and private equity firms layer a performance incentive on top of their management fees. The traditional model charges 2% annually plus 20% of profits, but competitive pressure has pushed averages down. Industry data from 2023 put the average hedge fund management fee closer to 1.35% and the average performance fee around 16%. The biggest and best-performing funds still command the full 2 and 20 or more.
The profit share, called carried interest, is where the real money lives for fund managers. A fund earning $200 million in gains at a 20% carry sends $40 million to the general partner. Most fund agreements include a high-water mark: the fund’s value must exceed its previous peak before any new performance fee kicks in. Some also set a hurdle rate, requiring the fund to clear a minimum return (often 6% to 8%) before the carry applies.
Carried interest also gets favorable tax treatment. Because the income flows through as capital gains rather than compensation, fund managers pay a top federal rate of 23.8% instead of the 37% top rate on ordinary income. Under the Tax Cuts and Jobs Act, the underlying asset must be held for more than three years for the gain to qualify as long-term; a shorter holding period gets recharacterized as short-term and taxed at ordinary rates.9Internal Revenue Service. Section 1061 Reporting Guidance FAQs10Office of the Law Revision Counsel. 26 USC 1061 – Partnership Interests Held in Connection with Performance of Services
Investment Banking and Underwriting
Investment banking divisions earn revenue by helping companies raise capital and execute transactions. The largest single payday comes from underwriting initial public offerings. When a company goes public, the bank buys shares at a discount and resells them to the public at the offering price. The gap is the underwriting spread, typically 4% to 7% of gross IPO proceeds. Mid-sized offerings between $20 million and $100 million cluster near 7%; larger deals negotiate lower percentages because fixed costs spread across a bigger base.
Merger and acquisition advisory generates a separate stream. Firms typically charge a monthly retainer during the engagement plus a success fee calculated as a percentage of final deal value, with the retainer credited against the success fee at closing. Advisory work also opens cross-selling opportunities, since the firm handling an M&A deal is well-positioned to underwrite any financing the buyer needs.
Soft Dollar Arrangements
Investment managers sometimes pay higher-than-necessary trading commissions in exchange for research services from the broker handling the trades. A manager might route trades through a particular broker not because that broker offers the best execution, but because the broker provides proprietary research, data terminals, or analytical tools as part of the arrangement. Section 28(e) of the Securities Exchange Act creates a safe harbor for the practice, as long as the manager determines in good faith that the commissions paid are reasonable relative to the value of the research received.11Federal Register. Commission Guidance Regarding Client Commission Practices Under Section 28(e) of the Securities Exchange Act of 1934
Clients bear the cost through higher trading expenses. If a manager could execute a trade for two cents per share but routes it to a broker charging four cents because that broker bundles research, the extra two cents comes out of client returns. Managers must disclose these arrangements in Form ADV filings.2SEC.gov. Form ADV Part 2A When a product or service has mixed uses, part research and part office overhead, the manager is expected to allocate costs and only charge the research portion to client commissions.
How to See What Your Firm Actually Charges You
No major investment firm relies on a single revenue line. A full-service firm might collect a 1% AUM fee from your advisory account, earn a spread on your uninvested cash, receive payment for order flow on your self-directed trades, charge margin interest when you borrow, lend your shares to short-sellers, and collect 12b-1 fees from the mutual funds it recommends. Each charge looks modest on its own. Stacked together, they can consume a meaningful share of your annual returns.
Two documents cut through most of it. Form ADV Part 2A tells you how the firm charges and where its conflicts sit. The firm’s Rule 606 quarterly reports show how your trades are being routed and who is paying for the privilege. Neither is long, and together they reveal more about how your firm makes money than any marketing brochure.