This topic covers how broker-dealers earn money and compensate their representatives, focusing on the structural differences between commission-based and fee-based models, markups and markdowns, spreads, and advisory compensation. Understanding these models is critical for the SIE exam because questions test your ability to identify appropriate compensation structures, calculate transaction costs, and distinguish between agent and principal transactions.
A broker acts as an agent for a customer, executing trades on behalf of the client and earning a commission for the service. The broker does not own the securities being traded and simply facilitates the transaction between buyer and seller.
A dealer acts as a principal, buying and selling securities from its own inventory. The dealer profits from the spread-the difference between what it pays to buy securities (the bid) and what it charges to sell them (the ask). No commission is charged in a principal transaction; instead, the dealer's compensation is embedded in the price through a markup (when selling to a customer) or markdown (when buying from a customer).
Example: If you buy 100 shares through your broker-dealer acting as an agent, you pay the market price plus a commission. If the same firm acts as principal and sells you shares from its own inventory, you pay a price that includes the firm's markup, but no separate commission.

A markup is the amount added to the dealer's cost when selling a security to a customer from inventory. A markdown is the amount subtracted from the market price when the dealer buys a security from a customer for its own inventory.
The FINRA 5% Policy (also called the 5% Markup Policy) serves as a guideline-not a hard rule-for determining whether a markup, markdown, or commission is fair and reasonable. The 5% figure is a guide; actual fairness depends on multiple factors.
The spread is the difference between the bid price (what a dealer will pay to buy a security) and the ask price (what a dealer will charge to sell the same security). The spread represents the dealer's gross profit on a round-turn transaction.
Example: A dealer quotes a stock at 50.00 bid, 50.10 ask. The spread is \(50.10 - 50.00 = 0.10\) per share. If a customer buys 100 shares at the ask (50.10), the dealer earns \(0.10 \times 100 = 10.00\) in gross revenue.
Registered representatives (RRs) typically earn commissions based on the volume and type of securities transactions they execute for clients. Commissions vary by product: stocks, bonds, mutual funds, options, and annuities each have different payout structures.
In a fee-based account, the client pays a percentage of assets under management (AUM) rather than commissions per transaction. This model aligns the representative's compensation with the growth of the client's portfolio, not the number of trades.

Registered representatives are generally prohibited from sharing in profits or losses in a customer's account unless specific conditions are met.
A riskless principal transaction occurs when a broker-dealer receives a customer order, immediately buys or sells the security as principal to fill that order, then sells or buys the security to or from the customer at a markup or markdown.
Example: A customer places an order to buy 500 shares of XYZ. The firm simultaneously buys 500 shares in the market as principal and sells them to the customer at a markup. The firm held the securities for only seconds and took minimal risk.
Soft dollars refer to brokerage commissions paid by investment advisers or broker-dealers in exchange for research, analytical tools, or other services that benefit clients. These arrangements are permitted but must meet strict criteria.
1. Scenario: A customer buys 200 shares of a stock from a broker-dealer's inventory at $52 per share. The prevailing market price is $50. The confirmation shows a $100 commission. Is this permissible?
Correct Approach: No. The firm acted as principal (selling from inventory), so it cannot charge a separate commission. The firm's compensation is the markup embedded in the $52 price. Charging both a markup and a commission on the same transaction violates FINRA rules.
Check first: Determine whether the firm acted as agent or principal. If the firm sold from inventory, it acted as principal and can only charge a markup.
Do NOT do first: Do not assume that because a commission appears on the confirmation, the charge is legitimate. Always verify the capacity in which the firm acted.
Why other options are wrong: Allowing both a markup and commission would result in double compensation, which is prohibited. A markdown applies when buying from a customer, not selling to one. A spread applies to quoted bid-ask differences, not individual transactions.
2. Scenario: An RR wants to share in the profits of a wealthy client's account. The client agrees verbally, and the RR contributes 10% of the account's capital. The firm has not been notified. Is this allowed?
Correct Approach: No. The RR must obtain written authorization from both the customer and the firm. Verbal agreement is insufficient, and the firm must approve the arrangement even if sharing is proportional.
Check first: Confirm that written authorization from both the customer and the firm has been obtained before any sharing occurs.
Do NOT do first: Do not assume verbal agreement suffices. Written documentation is mandatory for account sharing.
Why other options are wrong: Proportional contribution alone does not satisfy the requirement-firm and customer authorization are always required. Immediate family exception applies only to sharing arrangements with family members, not all clients. Oral consent does not meet regulatory standards.
3. Scenario: A dealer quotes a municipal bond at 98 bid, 99 ask. A customer buys the bond from the dealer at 99.50. What is the dealer's compensation?
Correct Approach: The dealer's compensation is the markup of 0.50 points (or $5 per $1,000 bond) above the ask price of 99. The spread (98 to 99) is not the dealer's compensation in this transaction; it's the difference between bid and ask quotes. The markup is the difference between the ask and the price charged to the customer.
Check first: Identify the ask price and the price charged to the customer. The markup is the difference between these two figures.
Do NOT do first: Do not confuse the spread (bid to ask) with the markup. The spread is what the dealer would earn on a round-turn transaction at quoted prices; the markup is what the dealer adds above the ask when selling to a customer.
Why other options are wrong: The bid price is irrelevant when the customer is buying-only the ask and sale price matter. The spread does not directly measure the dealer's compensation on this specific sale. Calculating from the dealer's cost without considering the prevailing ask violates the 5% Policy framework.
4. Scenario: An investment adviser manages $10 million for a client and charges a 1.5% annual fee. The adviser uses $15,000 in soft dollars from brokerage commissions to pay for office rent. Is this permissible?
Correct Approach: No. Soft dollars can only be used for services that assist in investment decision-making, such as research or analytical tools. Office rent is an overhead expense and does not qualify.
Check first: Determine whether the expense directly benefits clients' investment decisions. If it's overhead or personal benefit, it's not a permissible soft dollar use.
Do NOT do first: Do not assume all adviser expenses can be paid with soft dollars. Only research and decision-making tools are allowed.
Why other options are wrong: Payment for rent benefits the firm, not client portfolios. Travel, furniture, and administrative costs are similarly excluded. Only research, data, and analysis tools that aid investment decisions are acceptable soft dollar uses.
5. Scenario: A client trades very infrequently-perhaps once every six months-and wants the lowest cost structure. Should the RR recommend a commission-based or fee-based account?
Correct Approach: Commission-based. The client will pay only when they trade, which is rare. A fee-based account charging 1-2% annually would cost more given the low trading frequency.
Check first: Assess the client's trading frequency and compare the annual fee (percentage of AUM) to expected commission costs.
Do NOT do first: Do not default to recommending fee-based accounts for all clients. Fee-based accounts are cost-effective only for active traders or those needing ongoing advice.
Why other options are wrong: A fee-based account would charge the client annually regardless of trading activity, resulting in higher costs. Wrap accounts and advisory fees are unsuitable for infrequent traders. Commission-based pricing aligns cost with usage.
Task: Calculating a markup or markdown in a principal transaction
Example:
A dealer's prevailing ask price for a stock is $40. The dealer sells the stock to a customer at $41.
Markup = \(41 - 40 = 1\) dollar per share.
Percentage markup = \(\frac{1}{40} \times 100 = 2.5\%\).
This is within the 5% guideline and likely reasonable, depending on other factors.
Task: Determining whether sharing in a customer account is permissible
Q1: A broker-dealer buys 500 shares of stock from a customer at $48 per share when the current market bid is $50. What is this transaction called, and what is the broker-dealer's compensation?
(a) Agency transaction; commission of $2 per share
(b) Principal transaction; markdown of $2 per share
(c) Principal transaction; markup of $2 per share
(d) Riskless principal transaction; spread of $2 per share
Ans: (b)
The broker-dealer bought from the customer at a price below the market bid, acting as principal. The $2 difference between the market bid ($50) and the customer's sale price ($48) is a markdown. Option (a) is incorrect because commissions apply to agency transactions, not principal transactions. Option (c) is wrong because markups apply when selling to a customer, not buying from one. Option (d) is incorrect because this is not a riskless principal transaction-it's a straightforward purchase from the customer-and spread refers to bid-ask differences, not compensation on a single transaction.
Q2: An RR wishes to share in the profits of a customer's account. The customer is the RR's brother. Which of the following is required?
(a) Written authorization from the customer and the firm; proportional sharing based on the RR's contribution
(b) Written authorization from the customer and the firm; no proportional sharing required
(c) Written authorization from the customer only; proportional sharing based on the RR's contribution
(d) No authorization required for immediate family members
Ans: (b)
When the customer is an immediate family member (including a sibling), written authorization from both the customer and the firm is still required, but proportional sharing is not necessary. Option (a) is incorrect because proportional sharing is not required for immediate family. Option (c) omits firm approval, which is always mandatory. Option (d) is wrong because written authorization from both parties is required even for family members.
Q3: A dealer quotes a corporate bond at 102 bid, 103 ask. A customer sells the bond to the dealer at 101. What is the dealer's compensation?
(a) 1 point markup
(b) 1 point markdown
(c) 1 point spread
(d) 2 point markup
Ans: (b)
The dealer bought the bond from the customer at 101, which is 1 point below the prevailing bid of 102. This is a markdown of 1 point. Option (a) is incorrect because markups apply when selling to a customer. Option (c) is wrong because the spread is the difference between bid and ask (102 to 103), not the dealer's compensation on this transaction. Option (d) incorrectly calculates the markdown and mislabels it as a markup.
Q4: Which of the following is NOT a permissible use of soft dollars by an investment adviser?
(a) Paying for third-party research reports
(b) Subscribing to a financial data service
(c) Purchasing computer hardware for the adviser's office
(d) Obtaining portfolio analysis software
Ans: (c)
Soft dollars must be used for services that assist in investment decision-making. Computer hardware is an overhead expense and does not directly aid investment decisions. Options (a), (b), and (d) are all acceptable soft dollar uses because they provide research, data, or analytical tools that benefit clients' portfolios.
Q5: A client trades actively, executing 30-40 transactions per month. The client's account value is $500,000. Which compensation model is likely most cost-effective for this client?
(a) Commission-based account charging $10 per trade
(b) Fee-based account charging 1.5% of AUM annually
(c) Principal transactions with markups averaging 3%
(d) Riskless principal transactions with commissions
Ans: (b)
With 30-40 trades per month, commission-based costs would range from $3,600 to $4,800 annually ($10 × 30 to 40 trades × 12 months), or potentially higher. A fee-based account at 1.5% of $500,000 = $7,500 annually, but includes unlimited trades and advisory services, making it more cost-effective and aligned with the client's active trading. Option (a) might seem lower cost, but only if commissions are exactly $10 per trade with no other fees; in practice, active traders benefit from fee-based accounts. Option (c) would result in high cumulative costs due to markups on every trade. Option (d) is nonsensical-riskless principal transactions involve markups, not commissions.
Q6: A confirmation shows that a broker-dealer sold 1,000 shares of stock to a customer as principal at $25 per share. The confirmation also lists a $50 commission. What is the issue?
(a) The markup is excessive under the 5% Policy
(b) The firm cannot charge both a markup and a commission on the same transaction
(c) The firm should have acted as agent, not principal
(d) The commission is too low for 1,000 shares
Ans: (b)
When a firm acts as principal, it cannot charge a separate commission; its compensation is embedded in the price as a markup. Charging both violates FINRA rules. Option (a) is incorrect because we don't know the prevailing market price, so we can't determine if the markup is excessive. Option (c) is wrong because firms may act as principal or agent depending on circumstances-neither is inherently incorrect. Option (d) is irrelevant; the real issue is the dual charge.