Broker-Dealer Net Capital — SEC Rule 15c3-1 Regulatory Capital Computation
Computing the broker-dealer's net capital under SEC Rule 15c3-1 — the regulatory minimum capital required to ensure the firm can meet its obligations to customers and counterparties.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Allowable Net Capital (After Haircuts and Deductions) | Regulatory Memo | 2,850,000,000.00 | - |
| Minimum Net Capital Required (2% of Aggregate Debit Items) | Regulatory Memo | - | 850,000,000.00 |
| Net Capital Excess (Allowable minus Required) | Regulatory Memo | - | 2,000,000,000.00 |
💡 Accountant's Note
SEC Rule 15c3-1 (the 'Net Capital Rule') is the fundamental solvency requirement for registered broker-dealers. It requires the firm to maintain minimum net capital — liquid assets sufficient to meet obligations. Net Capital computation: begin with stockholders' equity, ADD qualifying subordinated debt, SUBTRACT: (1) illiquid assets (goodwill, furniture, software), (2) 'haircuts' on securities (% deductions from FV to account for market risk — e.g., 15% haircut on equities, 6.25% on corporate bonds, up to 30% on structured products), (3) other deductions. The result is 'Allowable Net Capital.' The minimum required = 2% of Aggregate Debit Items (essentially, customer account debit balances) under the 'Standard Method,' or a fixed dollar amount under the 'Alternative Method' used by large broker-dealers. Most large broker-dealers use the Alternative Method (minimum $250K or 2% of ADI, whichever is larger).
Practitioner & Systems Framework
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Net capital is computed daily by the treasury/finance team and reported to regulators via FOCUS Reports (FINRA Form X-17A-5). A broker-dealer that falls below the minimum net capital requirement must immediately notify FINRA and the SEC — and must cease certain business activities (new customer accounts, business expansion) until capital is restored. The haircut on each security type is defined in the Rule's appendix — complex structured products have higher haircuts reflecting their illiquidity.
⚠️ Audit Flags
The annual FOCUS Report audit is a core engagement for any registered broker-dealer auditor. Auditors recompute the net capital calculation and test each deduction: illiquid asset identification (any asset that can't be liquidated within 20 days is typically disallowed), security haircut application (correct haircut for each security type and maturity), and subordinated debt qualification (must meet specific FINRA requirements to count as regulatory capital).
📄 Required Documentation
Monthly FOCUS Reports (Form X-17A-5), net capital computation workpaper, security inventory with haircut calculation by category, illiquid asset deduction schedule, subordinated debt agreements (if included), aggregate debit items calculation (for minimum requirement), and FINRA notification letters (if any deficiency occurred).
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