Broker-Dealer Accounting: Net Capital, Reserves, and FOCUS Reports

Broker-dealer accounting is standard GAAP financial reporting with a mandatory second layer of SEC and FINRA rules bolted on top. Every firm registered with the SEC to buy, sell, or underwrite securities prepares its financial statements under U.S. GAAP, and then applies a set of regulatory requirements — net capital computations, customer asset segregation, daily valuation, prescribed books and records, and periodic FOCUS reporting — that no other type of business faces. The regulatory layer is often more conservative than GAAP alone would demand, which is why the two systems have to be understood together.

Net Capital Is the Center of Gravity

SEC Rule 15c3-1, the Net Capital Rule, measures whether the firm holds enough liquid assets to wind down and return customer property if it fails. Every other regulatory requirement either feeds this calculation or depends on it, and dropping below the minimum is an existential event.

How the Calculation Works

The computation starts with GAAP net worth and then applies two rounds of conservative adjustments.

First, the firm subtracts non-allowable assets. These are anything that cannot be quickly converted to cash in a liquidation: fixed assets, prepaid expenses, unsecured receivables, and goodwill. Office furniture will not pay customers back.

Second, the firm applies haircuts to proprietary securities positions. A haircut is a percentage deduction from market value that accounts for the risk the position loses value before it can be sold. The percentages vary sharply by security type and maturity. U.S. government securities with less than three months to maturity take a 0% haircut; those with 25 or more years to maturity take 6%. Municipal securities run from 0% for short-term discount notes up to 7% for maturities of 20 years or more. Non-marketable securities take a 100% haircut and contribute nothing to net capital.¹

The requirement is continuous. A firm cannot take on a new proprietary position if doing so would push net capital below the minimum, even if the firm intends to close the position before day’s end.²

Two Methods for the Minimum

Firms choose between two approaches:

Under the basic (aggregate indebtedness) method, aggregate indebtedness cannot exceed 1,500% of net capital, meaning net capital must be at least 6⅔% of total indebtedness. New firms in their first year face a tighter 800% limit.¹
Under the alternative method, net capital must equal the greater of $250,000 or 2% of aggregate debit items from the Rule 15c3-3 reserve formula. Most large carrying firms elect this method because it ties the requirement to customer-related balances rather than to total liabilities.¹

What Happens If a Firm Falls Below

A deficiency triggers immediate notification to the SEC and FINRA and can force the firm to suspend business until compliance is restored. In severe cases, regulators can compel an orderly liquidation. Because net capital is reported on every FOCUS filing, regulators have continuous visibility into whether a firm is approaching trouble.

Customer Protection and the Reserve Formula

SEC Rule 15c3-3, the Customer Protection Rule, exists so that a broker-dealer cannot fund its own business with customer cash or securities. When a firm fails, this rule is what determines whether customer assets can be returned quickly or get tangled in bankruptcy.³

The Reserve Computation

Carrying broker-dealers compute the net cash owed to customers (total credits) against net cash owed by customers (total debits). When credits exceed debits, the firm deposits the difference into a Special Reserve Bank Account for the Exclusive Benefit of Customers. That account may hold only cash or qualified securities such as U.S. Treasuries and must be completely separate from the firm’s operating funds.⁴

Under the weekly computation, the firm calculates the reserve as of the close of the last business day of the week and deposits any shortfall by 10:00 a.m. on the second business day after the computation date.⁴

Daily Computation for Firms at or Above $500 Million

Starting in 2026, carrying broker-dealers whose average total credits equal or exceed $500 million must perform both the customer and PAB (Proprietary Accounts of Broker-Dealers) reserve computations daily rather than weekly. A firm triggers the requirement when the rolling 12-month average of total credits on its month-end FOCUS Reports hits $500 million, and it then has six months to comply.⁴ A firm using the 12 month-end FOCUS Reports from January 31 through December 31, 2025, must begin daily computations no later than June 30, 2026.⁵

For daily computations, the deposit deadline shifts to no later than one hour after banking business opens on the second business day following the computation date. SEC staff has also clarified that firms performing daily computations may treat federal holidays, Good Friday, and certain adjacent business days as non-computation days.⁵

Possession or Control of Customer Securities

Beyond the cash reserve, the rule requires a broker-dealer to promptly obtain and maintain physical possession or control of all fully-paid securities and excess margin securities belonging to customers. If a security is temporarily out of the firm’s control due to normal business operations, the firm carries the burden of proving the lapse is temporary and that it took timely, good-faith steps to regain control.³ Firms that don’t track securities locations accurately can drift out of compliance without realizing it.

Daily Valuation and Trade-Date Accounting

Two GAAP applications set broker-dealer accounting apart from standard commercial books.

The first is daily mark-to-market. A broker-dealer must mark all securities and commodities positions to market daily, reflecting unrealized gains and losses on the balance sheet in real time.⁶ Most companies can hold investments at cost or amortized cost until sale. A broker-dealer cannot. Valuation follows the ASC 820 fair value hierarchy, and positions that rely on internal models rather than observable market prices draw the most scrutiny from auditors and examiners.

The second is trade-date accounting. Under ASC 940-320-25-1, broker-dealers recognize purchases and sales on the date the trade is executed, not on the later settlement date. The balance sheet reflects economic exposure from the moment a trade is struck.

Proprietary trading gains and losses run through the daily mark-to-market process under specialized financial instrument guidance rather than through ASC 606. Repurchase agreements, reverse repos, and securities lending are treated as collateralized financings, not sales: the securities stay on the balance sheet and the cash leg is recorded as a receivable or payable.

Revenue Recognition Under ASC 606

Broker-dealer revenue splits into streams governed by ASC 606 (Revenue from Contracts with Customers) and streams carved out under specialized financial instrument guidance. Getting that split wrong can distort net capital, and FINRA has specifically reminded firms that net worth for capital purposes must be computed under GAAP, including proper application of ASC 606 where it applies.⁷

Commission income from executing customer trades is recognized at a point in time, on the trade date, when the execution performance obligation is satisfied. Underwriting revenue from IPOs or secondary offerings can involve multiple performance obligations: the primary management or underwriting fee is generally recognized when the offering closes and the firm has sold its allocated securities, while any post-offering services like market stabilization can require a portion of the fee to be deferred and recognized as those services are delivered.

Advisory and success fees for M&A engagements follow the ASC 606 performance obligation framework. A success fee tied to deal completion is recognized when the deal closes; a retainer for ongoing advisory services is recognized over the service period. Proprietary trading gains and losses sit outside ASC 606 entirely and flow through the daily mark-to-market process.

Books, Records, and Electronic Storage

SEC Rules 17a-3 and 17a-4 set the recordkeeping backbone. Rule 17a-3 specifies what has to be created; Rule 17a-4 specifies how long it has to be kept. Gaps in either area are among the most common examination findings.

Rule 17a-3 requires daily blotters recording every purchase, sale, receipt, delivery, and cash movement, with each entry identifying the account, security, price, trade date, and counterparty. Firms must also maintain general ledgers reflecting all assets, liabilities, income, expense, and capital accounts; individual customer account ledgers; securities transfer ledgers; records of dividends and interest; securities borrowed and loaned; failed deliveries and receipts; all repos and reverse repos; and a securities record showing every long and short position by security and by account.⁸

Rule 17a-4 sets retention in tiers:

Six years for blotters, general ledgers, customer account ledgers, and securities records, with the first two years in an easily accessible location.
Three years for communications sent and received, trial balances, net capital computations, bank statements, cancelled checks, bills, written agreements, and powers of attorney, again with the first two years easily accessible.
Six years after account closing for customer account cards and records covering the terms and conditions of the account.⁹

Firms storing records electronically must use a system that either preserves records in a non-rewriteable, non-erasable format or maintains a complete time-stamped audit trail for the entire retention period.⁹ Standard file servers and generic cloud storage do not clear this bar on their own; most firms use specialized compliance archiving platforms that enforce write-once-read-many (WORM) storage or an equivalent audit trail.

FOCUS Reporting and the Annual Audit

SEC Rule 17a-5 requires every registered broker-dealer to file Form X-17A-5, the FOCUS Report (Financial and Operational Combined Uniform Single Report).¹⁰

Filing frequency depends on the firm’s activities. A broker-dealer that clears transactions or carries customer accounts files Part I monthly, within 10 business days of month-end, and Part II quarterly and at fiscal year-end, within 17 business days. Firms that neither clear nor carry customer accounts file the simpler Part IIA quarterly.¹⁰

Every broker-dealer also files an annual report with audited financial statements prepared under GAAP. The annual report includes a Statement of Financial Condition, a Statement of Income, a Statement of Cash Flows, a Statement of Changes in Equity, and a Computation of Net Capital, all in the format prescribed by Form X-17A-5. It also includes either a compliance report (for firms subject to the Customer Protection Rule) or an exemption report (for firms claiming an exemption), together with an independent auditor’s report covering both documents.¹⁰

The auditor cannot be any licensed CPA firm. Under authority granted by the Dodd-Frank Act, the Public Company Accounting Oversight Board oversees broker-dealer auditors, and the firm’s independent auditor must be registered with the PCAOB and perform the audit under PCAOB standards.¹¹ The auditor must also be qualified and independent under SEC Rule 2-01 of Regulation S-X, and the audit covers not just the financial statements but the supporting regulatory schedules, including the net capital computation and reserve formula calculations.¹⁰

The SIPC Assessment

Nearly every broker-dealer registered with the SEC is automatically a member of the Securities Investor Protection Corporation, and membership carries a financial obligation. Each member firm pays an annual assessment based on net operating revenues. The SIPC Board set the 2026 rate at 0.15% of net operating revenues, effective January 1, 2026.¹² The assessment is accounted for as an operating expense. Failure to pay can lead to suspension of SIPC membership and, in turn, SEC revocation of the firm’s broker-dealer registration.

1
eCFR. 17 CFR 240.15c3-1 – Net Capital Requirements for Brokers or Dealers
2
Financial Industry Regulatory Authority. SEA Rule 15c3-1 and Related Interpretations
3
eCFR. 17 CFR 240.15c3-3 – Customer Protection, Reserves and Custody of Securities
4
Securities and Exchange Commission. Final Rule – Daily Computation of Customer and Broker-Dealer Reserve Requirements
5
Securities and Exchange Commission. Frequently Asked Questions – Rule 15c3-3 and Daily Customer and PAB Reserve Computations
6
Securities and Exchange Commission. Key SEC Financial Responsibility Rules
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Financial Industry Regulatory Authority. FINRA Regulatory Notice 23-21 – Net Capital, Recordkeeping and Financial Reporting Requirements in Connection with Revenue Recognition Practices
8
eCFR. 17 CFR 240.17a-3 – Records to Be Made by Certain Exchange Members, Brokers and Dealers
9
eCFR. 17 CFR 240.17a-4 – Records to Be Preserved by Certain Exchange Members, Brokers and Dealers
10
eCFR. 17 CFR 240.17a-5 – Reports to Be Made by Certain Brokers and Dealers
11
Public Company Accounting Oversight Board. Information for Auditors of Broker-Dealers
12
SIPC. Assessment Rate