SEC Rule 15c3-1 is designed to require broker-dealers to maintain sufficient liquid capital in relation to their activities and obligations. Although a firm may begin with a stated minimum requirement, the practical calculation involves much more than a comparison to book equity.
From net worth to net capital
The computation generally begins with ownership equity and applies regulatory adjustments. Non-allowable assets, unsecured receivables, certain prepaid expenses and other deductions may reduce net worth for regulatory purposes. Securities positions may also be subject to haircuts designed to reflect market and liquidity risk.
Business activity matters
A broker-dealer’s required minimum and applicable ratio tests depend on its business model. Introducing firms, proprietary trading firms, investment-banking firms and firms carrying customer accounts may face materially different requirements and operational considerations.
Moment-to-moment compliance
Net capital is not solely a month-end calculation. Material expenses, distributions, losses, securities positions, underwriting commitments and intercompany transactions can change the firm’s position between reporting dates.
Management use
A useful net-capital process gives management forward-looking information. Scenario analysis before a distribution, investment or new business initiative can identify required notices, approvals or additional capital before the transaction occurs.