Unencumbered Cash Sweep Collateral Haircut
The Formal Definition
A prudential regulatory deduction enforced under SEC Rule 15c3-1 (Net Capital Rule) that devalues uninvested customer sweep balances deposited with affiliated commercial banks when computing the broker-dealer’s net liquid regulatory reserves.
Net Regulatory Capital Value = Unencumbered Sweep Deposit × (1 - Affiliated Bank Concentration Haircut %)
Cole Barrett's Reality Check
The Unvarnished Bottom Line"Brokers love sweeping your idle cash into their own affiliated banking subsidiaries because it gives their corporate bank cheap funding. But regulators treat that cash with suspicion: if a broker deposits billions in client cash with their own bank, regulators slap on an affiliated capital haircut when calculating the broker's safety cushion. If the bank runs into trouble, your broker's capital cushion takes an immediate hit."
Interactive Simulator: Test the Math
Real-World Example: Scenario Breakdown
Examining the real numbers for: A broker-dealer evaluating regulatory net capital reserves across $500,000,000 in uninvested retail customer cash
| Execution Metric | Multi-Bank Independent Sweep Broker | Captive Affiliated Bank Sweep Broker |
|---|---|---|
| Fee / Rate | $0 account maintenance fee | $0 advertised fees |
| Spread / Buffer | Swept customer funds across a network of 8 unaffiliated, independent Tier-1 commercial banks | Swept 100% of customer idle cash into its own proprietary parent banking subsidiary to fund corporate lending |
| Execution / Status | Zero affiliated bank concentration haircut; 100% of deposits counted toward regulatory capital stability metrics | Regulators enforced an affiliated concentration haircut, devaluing regulatory capital credit by 15% |
| Total Cost / Result | Preserved balance-sheet safety through diversified third-party banking networks | Faced regulatory capital strain due to captive bank sweep concentration |
How Brokers Weaponize This Term
Review your broker's uninvested cash sweep disclosures. Look at the 'Bank Sweep Program Bank List'. If 100% of your idle cash is swept into a single affiliated bank entity owned by the broker's parent company, the broker is prioritizing corporate net interest margin over custodial diversification.
Broker Evaluation Matrix
Cole Approves
Fidelity: Provides automatic, zero-fee sweeps into independent government money market funds (like SPAXX) backed directly by US Treasuries, avoiding captive bank sweep risks.
Read Audit →Cole Flags / Avoids
Major Retail Banking Brokerages: Sweeps retail customer cash exclusively into affiliated commercial banking subsidiaries paying near-zero interest rates.
View Trap Details →Frequently Asked Questions
Why do brokers sweep cash to affiliated banks?
Because it provides their parent banking entity with low-cost, sticky deposits that they can lend out at higher market rates, pocketing a multi-billion-dollar net interest margin.
Are cash sweep deposits protected by FDIC insurance?
Yes, provided the sweep bank is an FDIC-insured institution, deposits are insured up to $250,000 per depositor per bank.