Blog · Finance metrics and formulas · Financial services
A broker-dealer earns different kinds of revenue from brokerage, principal transactions and account services. Compare those recorded revenues with representative payouts, clearing charges and the cost of serving each client segment.
A broker dealer business model combines commissions, principal transaction revenue and service fees, with the exact mix depending on the firm's business. To understand profitability, compare those revenues with representative payouts, transaction expenses and the work required to serve each client segment. Revenue growth alone cannot show whether the firm is earning more from its available people and operating capacity.
The SEC's broker-dealer guide distinguishes a broker acting for others' accounts from a dealer acting for its own account. That distinction matters in a revenue report: agency commissions and recorded principal revenue come from different activities and can respond differently to transaction mix.
FINRA Rule 2121 separately discusses commissions in agency transactions and markups in principal transactions. For a business review, keep those categories visible rather than putting every receipt into an undifferentiated sales column.
A useful revenue map has these groups:
| Revenue group | What the management report uses | What to keep separate |
|---|---|---|
| Brokerage commissions | Recognized transaction commissions after reversals | Securities transaction value |
| Principal activity | Net trading revenue recorded under the firm's policy | Gross purchases and sales of inventory |
| Account services | Recognized administration or service fees | Client deposits and transferred assets |
| Other activities | Separately identified revenue from activities the firm actually conducts | Unrelated affiliate revenue |
An affiliated advisory business should have its own revenue and cost mapping. Combining it with brokerage without identifying the business line obscures whether recurring fees or transaction activity explain a change.
Start with the revenue ledger, representative compensation report, clearing invoices and client-service records for the same accounting period. Use an internal client or account identifier to attach each entry to a segment. Keep posting date, revenue category, reversal reference, channel and amount on the underlying rows.
The service file needs a work category and recorded hours, or another documented activity measure. Use summarized internal identifiers in the analysis rather than unnecessary client details. Finance should approve the labor rate and explain whether it includes benefits and management time.
A customer profitability report provides the wider reporting structure. Here the specific question is how brokerage revenue converts to contribution after the costs assigned to each segment.
The following illustration uses recognized revenue for the quarter ended September 30, 2026. Principal revenue is already net trading revenue from the ledger, not the value of securities handled. All amounts are hypothetical USD.
| Client segment | Commissions (USD) | Principal revenue (USD) | Service fees (USD) | Total revenue (USD) |
|---|---|---|---|---|
| Self-service | 120,000 | 20,000 | 10,000 | 150,000 |
| Assisted brokerage | 180,000 | 40,000 | 20,000 | 240,000 |
| Institutional | 200,000 | 90,000 | 10,000 | 300,000 |
| Total | 500,000 | 150,000 | 40,000 | 690,000 |
Next attach representative payouts and clearing or transaction costs. For this illustration, service hours carry an approved cost of $100 per hour. That is an allocation assumption, not a market benchmark or an hourly client charge.
| Client segment | Representative payouts (USD) | Clearing and transaction costs (USD) | Service hours | Service cost: hours × 100 (USD) | Total attributed cost (USD) |
|---|---|---|---|---|---|
| Self-service | 45,000 | 18,000 | 120 | 12,000 | 75,000 |
| Assisted brokerage | 108,000 | 20,000 | 360 | 36,000 | 164,000 |
| Institutional | 105,000 | 30,000 | 450 | 45,000 | 180,000 |
| Total | 258,000 | 68,000 | 930 | 93,000 | 419,000 |
Define the measure before using the word contribution:
Segment contribution after attributed service cost = Recorded revenue − Representative payouts − Clearing and transaction costs − Attributed service cost
Segment contribution margin = Segment contribution / Recorded revenue
This is a management measure. Because attributed labor can include fixed salaries, it is not automatically the variable-cost contribution used in a short-term pricing calculation. The distinctions among gross margin, contribution margin and net margin help prevent that interpretation error.
| Client segment | Revenue (USD) | Attributed cost (USD) | Segment contribution (USD) | Contribution margin |
|---|---|---|---|---|
| Self-service | 150,000 | 75,000 | 75,000 | 50.0% |
| Assisted brokerage | 240,000 | 164,000 | 76,000 | 31.7% |
| Institutional | 300,000 | 180,000 | 120,000 | 40.0% |
| Total | 690,000 | 419,000 | 271,000 | 39.3% |
Margins are rounded to one decimal place after calculation. The total divides $271,000 by $690,000; it does not average the displayed segment percentages.
The contribution table is incomplete until it bridges to the remaining expenses. Suppose the same quarter has the following central expenses, with none already included in the attributed costs above.
| Reconciliation step | Calculation | Result (USD) |
|---|---|---|
| Recorded revenue | 500,000 + 150,000 + 40,000 | 690,000 |
| Attributed expenses | 258,000 + 68,000 + 93,000 | 419,000 |
| Segment contribution | 690,000 − 419,000 | 271,000 |
| Remaining central expenses | 30,000 + 50,000 + 40,000 | 120,000 |
| Operating result for the illustrated scope | 271,000 − 120,000 | 151,000 |
| Expense control | 419,000 + 120,000 | 539,000 |
Revenue of $690,000 less total expenses of $539,000 must equal the same $151,000 result. Tie these totals to the relevant ledger accounts. If the firm has financing costs, taxes or other activity outside this illustration, show a further bridge rather than silently treating this result as net income.
The assisted segment generates more revenue than self-service but almost the same contribution dollars. The next question is which service tasks, payout arrangements or transaction patterns explain that result. Review the underlying activities before changing service scope or compensation assumptions.
Institutional business produces the largest contribution dollars here, while self-service has the highest percentage margin. Those are different facts. A capacity decision needs the service workload as well as both profit measures.
Finance owns the revenue mapping and ledger reconciliation. Brokerage operations validates clearing and transaction expenses. Service leaders validate hours and the work behind them. For the allocation method itself, use the separate guide to calculating cost to serve per customer.
Bring a revenue export, representative payout file and summarized servicing costs for the same period to Covirage. Covirage maps the columns, and its tools compute and check recorded revenue mix and contribution; the external AI model explains the results with every figure traced to its rows. Create a free Covirage account and bring a sample of your own data.
See Covirage for financial services for the industry context.
Brokerage revenue generally reflects compensation for arranging transactions for clients. Principal trading revenue reflects the firm's own-account activity under its accounting policy. For a management comparison, use the recorded revenue from each activity; the value of securities bought or sold is not the firm's revenue.
Larger clients can produce more revenue while requiring greater compensation, service time and transaction support. Compare contribution dollars and contribution margin together. Also review service requirements and concentration before treating a large revenue relationship as the most attractive use of capacity.
Show shared expenses separately before allocating them. A consistent allocation can help explain the total firm result, but it does not prove those expenses disappear if a segment shrinks. Use attributable costs for service decisions and the complete expense bridge for firm budgeting.