Series 28 — Introducing Broker-Dealer Financial and Operations Principal Qualification Examination Quick Review

Independent Quick Review for the FINRA Series 28 exam, focused on introducing broker-dealer financial responsibility, net capital, reporting, books and records, and operations.

Quick Review Overview

This Quick Review is for candidates preparing for FINRA’s Series 28 — Introducing Broker-Dealer Financial and Operations Principal Qualification Examination. The goal is fast, exam-focused review before moving into topic drills, mock exams, and detailed explanations.

The Series 28 candidate should think like a financial and operations principal at an introducing broker-dealer: protect the firm’s minimum capital, maintain accurate books and records, file required reports, understand customer protection boundaries, and recognize when a transaction or balance sheet item creates a regulatory capital issue.

Use this page as an independent companion practice aid. It is not affiliated with FINRA or any regulator. Always use current FINRA and SEC materials as the controlling source for rule language and current requirements.

High-Yield Series 28 Mindset

If the question says…Think first about…Common trap
“Introducing broker-dealer”Does the firm carry accounts, hold funds, or hold securities?Treating the firm like a clearing broker
“Net capital”Start with net worth, remove nonallowable assets, apply haircuts and chargesCounting illiquid assets as capital
“Aggregate indebtedness”Money liabilities compared with net capitalForgetting accrued expenses, payables, or customer credits
“Customer funds or securities”Prompt transmission, fully disclosed clearing arrangement, possession/controlHolding customer checks or securities too long
“FOCUS report”Financial reporting, net capital computation, supporting booksConfusing annual audit with periodic FOCUS filing
“Clearing deposit”Is it allowable, restricted, or subject to a deduction?Assuming all deposits are fully liquid
“Fail, aged receivable, or unresolved difference”Potential capital deduction or nonallowable assetIgnoring age and collectability
“Proprietary position”Haircut, market risk, concentration, open commitmentUsing market value without haircut
“Early warning”Notice requirement before or at financial deteriorationWaiting until actual deficiency
“Exam asks for best action”Maintain capital, file notice, stop business if deficient, document supportChoosing a sales or revenue answer over regulatory protection

Core Financial Responsibility Framework

The Series 28 heavily tests whether you can classify items correctly and follow the calculation sequence.

Net Capital Core Formula

[ \text{Net Capital}

\text{Net Worth} + \text{Qualified Subordinated Liabilities}

\text{Nonallowable Assets}

\text{Haircuts and Other Charges} ]

Aggregate Indebtedness Ratio

[ \text{AI Ratio}

\frac{\text{Aggregate Indebtedness}}{\text{Net Capital}} ]

Required Net Capital Under the Aggregate Indebtedness Standard

[ \text{Required Net Capital}

\max(\text{Fixed Dollar Minimum},\ \text{Percentage Requirement Based on Aggregate Indebtedness}) ]

For exam purposes, remember the concept: the firm must maintain the greater of the applicable fixed-dollar minimum and the required amount based on indebtedness. If the firm is near a limit, the conservative answer is usually to reduce liabilities, increase allowable capital, restrict withdrawals, or notify as required.

Net Capital Calculation Sequence

Do not jump straight from balance sheet equity to net capital. The exam often tests the order.

  1. Start with ownership equity / net worth

    • Assets minus liabilities under appropriate accounting principles.
    • Confirm liabilities are complete, including accruals.
  2. Add qualified subordinated borrowings if allowable

    • Only properly documented and approved subordinated liabilities count.
    • Ordinary loans payable are generally liabilities, not capital.
  3. Deduct nonallowable assets

    • Assets that are not readily convertible to cash or are not collectible in time.
    • Common examples: furniture, fixtures, prepaid expenses, unsecured receivables, aged receivables, certain deposits, and unresolved differences.
  4. Apply securities haircuts

    • Proprietary securities positions are reduced by required deductions.
    • More volatile or less liquid positions usually create larger capital charges.
  5. Apply operational and concentration charges

    • Fails, deficits, undue concentration, open commitments, and other specific charges may reduce net capital.
  6. Compare net capital to the required minimum

    • Required capital is the greater of the applicable fixed minimum or formula-based requirement.
  7. Determine excess net capital

    • Excess net capital is the cushion above the requirement.

[ \text{Excess Net Capital}

\text{Net Capital}

\text{Required Net Capital} ]

Allowable vs. Nonallowable Assets

Asset or itemLikely treatmentExam reason
Cash in bankUsually allowableLiquid asset, subject to verification and restrictions
Proprietary securities with ready marketAllowable after haircutMarketable, but subject to market-risk deduction
Government securitiesAllowable after applicable haircutLower risk does not mean no haircut
Listed equity securitiesAllowable after haircutMarket value must be reduced
Furniture, fixtures, equipmentNonallowableNot readily convertible into cash for customer/regulatory protection
Leasehold improvementsNonallowableIlliquid operating asset
Prepaid expensesNonallowableAlready paid; not available to meet liabilities
Unsecured receivableOften nonallowableCollection risk
Aged receivableOften nonallowable or deductedAge indicates collectability risk
Clearing depositDepends on termsRestricted deposits may not be fully allowable
Insurance claim receivableQuestion-specificAllowability depends on collectability and documentation
Deferred tax assetOften nonallowable or limitedNot immediately liquid
Goodwill or intangible assetsNonallowableNo reliable immediate liquidation value
Deficits in customer or broker accountsPotential chargeUnsecured exposure or collectability issue

Quick Classification Rule

Ask:

  1. Is the asset cash or readily convertible to cash?
  2. Is it free of restriction?
  3. Is it collectible promptly?
  4. Is there a ready market?
  5. Does a rule require a haircut or deduction?

If the answer is no, restricted, aged, uncertain, or unsupported, expect a deduction or nonallowable treatment.

Aggregate Indebtedness Quick Review

Aggregate indebtedness generally focuses on the firm’s money liabilities. The Series 28 often tests whether a balance sheet item belongs in aggregate indebtedness, net capital, both, or neither.

ItemUsually included in aggregate indebtedness?Review point
Accounts payableYesMoney liability
Accrued expensesYesMust accrue known expenses
Rent payableYesOrdinary liability
Salaries and bonuses payableYesAccrued compensation counts when owed
Taxes payableYesLiability even if not yet paid
Bank loan payableUsually yesUnless properly subordinated and approved
Customer credit balancesOften yesLiability to customers
Broker-dealer payableOften yesLiability unless specifically excluded or offset by rule
Qualified subordinated loanNo, if properly treated as capitalMust meet regulatory conditions
Fully secured liabilityMay be excluded or limitedDepends on collateral and rule treatment
Equity capitalNoOwnership interest, not indebtedness

AI Ratio Decision Point

If the question gives aggregate indebtedness and net capital, calculate the ratio and compare it with the applicable limit or warning threshold described in the question.

Plain-English version:

  • Higher aggregate indebtedness means more required capital.
  • Lower net capital makes the ratio worse.
  • Accruing an expense can reduce net worth and increase indebtedness at the same time.
  • Reclassifying a receivable as nonallowable reduces capital even though total assets may not change.

Introducing Broker-Dealer vs. Carrying Broker-Dealer

This distinction is central to the Series 28.

FunctionIntroducing broker-dealerCarrying / clearing broker-dealer
Customer accountsIntroduces on a fully disclosed basisCarries customer accounts
Customer funds/securitiesGenerally should not hold; promptly transmits if receivedMay receive, hold, and safeguard
Customer statementsOften generated by carrying firmUsually responsible for custody-related statements
Customer Protection Rule reserveOften relies on exemption or noncarrying statusTypically must calculate reserve and maintain possession/control
Net capital burdenLower than a carrying firm, but still criticalHigher and more complex
Operations focusBooks, records, commissions, clearing relationship, capitalCustody, margin, settlement, reserve formula, possession/control
Exam trapAssuming “introducing” means no financial responsibilityAssuming every introducing firm has carrying-firm obligations

Customer Protection Rule Decision Path

    flowchart TD
	    A[Does the firm carry customer accounts?] -->|Yes| B[Expect carrying-firm customer protection obligations]
	    A -->|No| C[Does the firm receive or hold customer funds or securities?]
	    C -->|No| D[Noncarrying / introducing analysis]
	    C -->|Receives only for prompt transmission| E[Check payable to correct party and promptly forward]
	    C -->|Holds or controls| F[Potential custody issue and higher regulatory concern]
	    D --> G[Verify fully disclosed clearing arrangement]
	    E --> G
	    G --> H[Maintain books, records, notices, and exemption support]
	    F --> I[May lose expected treatment; review net capital and customer protection consequences]

Customer Funds and Securities Traps

SituationExam concern
Customer check made payable to the introducing firmMay indicate receipt of customer funds; treatment depends on prompt handling and firm permissions
Check made payable to clearing firm or issuer and promptly forwardedMore consistent with introducing-firm role
Customer securities left at the introducing firmPossession/control issue; may violate procedures
Employee delays forwarding customer fundsOperational and supervisory failure
Firm uses customer funds for operating expensesSerious violation; customer funds cannot finance the firm
Fully disclosed agreement exists but firm’s conduct differsActual conduct can override labels

FOCUS Reports and Financial Reporting

FOCUS reporting is a high-yield Series 28 topic because it connects books, records, capital, and regulatory supervision.

Report / filing areaWhat to know for exam reviewCommon mistake
FOCUS reportPeriodic financial and operational report filed through required regulatory channelsTreating it as only an accounting report
Balance sheetShows assets, liabilities, and equity at a dateForgetting nonallowable asset impact
Income statementShows revenue and expense over a periodIgnoring accruals
Net capital computationSupports capital complianceNot tying it to general ledger
Aggregate indebtedness scheduleSupports AI ratioOmitting accrued liabilities
Annual audited financial statementsIndependent audit support for financial conditionConfusing audit with daily capital monitoring
Supplemental schedulesProvide regulatory detailAssuming summary statements are enough
AmendmentsCorrect material errorsIgnoring inaccurate prior filing

Reporting Review Rules of Thumb

  • The books must support the report.
  • The report must support the net capital computation.
  • The net capital computation must be current enough to detect deterioration.
  • Material errors require correction, not silence.
  • A firm cannot solve a capital deficiency by delaying the filing.

Books and Records: What to Recognize Quickly

FINRA and SEC recordkeeping expectations are a major part of the financial operations function.

Record typeWhy it mattersExam angle
General ledgerMaster accounting recordMust reconcile to trial balance and financial reports
Cash receipts and disbursements blotterTracks money movementDetects misuse, errors, and unrecorded liabilities
Securities blotterTracks securities transactionsSupports trade and position records
Customer account recordsShows customer identity and account detailsIntroducing firms still maintain required records
Proprietary position recordsSupports haircut calculationsMissing positions understate capital charges
Trial balanceChecks ledger equalityUnbalanced trial balance signals record problem
Bank reconciliationsVerifies cashOld reconciling items may become charges
Clearing broker statementsSupports commissions, deposits, fails, and receivablesMust reconcile to internal books
Expense accrual supportEnsures liabilities are completeUnderaccruing inflates capital
Written supervisory proceduresShows how compliance is performedProcedures must match actual operations

Accrual Accounting Traps

Series 28 questions often hide capital issues inside accounting treatment.

Fact patternCorrect thinking
Expense incurred but not paidAccrue the liability; net worth decreases
Commission earned but not receivedRecord receivable only if collectible and supported
Receivable is old or disputedDeduct or treat as nonallowable if required
Prepaid rent or insuranceAsset for accounting, but usually nonallowable for net capital
Bonus declared but unpaidLiability if earned/obligated
Legal settlement probable and estimableAccrual may be required
Bank account unreconciledCash may be overstated; investigate before relying on it
Clearing broker charges not bookedCapital may be overstated

Haircuts and Market Risk

A haircut is a regulatory deduction from the value of proprietary positions. It recognizes that securities may decline in value before they can be liquidated.

Position typeExam concept
U.S. government securitiesUsually lower haircut than equities, but still subject to deduction
Municipal securitiesHaircut depends on features such as maturity and marketability
Corporate debtHaircut depends on quality, maturity, and market risk
Listed equity securitiesStandard equity haircut concepts frequently tested
OptionsStrategy and position relationships matter
Illiquid or nonmarketable securitiesMay be heavily deducted or nonallowable
Concentrated positionsAdditional charge may apply
Open contractual commitmentsCan create capital charges before settlement

Haircut Mistakes

  • Using market value as net capital without deduction.
  • Netting long and short positions when the rules do not allow it.
  • Ignoring concentration.
  • Treating restricted stock as freely marketable.
  • Forgetting proprietary accounts held at the clearing firm.
  • Ignoring unsettled trades that create position exposure.

Fails, Receivables, and Operational Charges

Fails and aged balances are common exam topics because they connect operations to capital.

ItemMeaningCapital concern
Fail to deliverFirm sold securities but did not deliverMay require charge if unresolved
Fail to receiveFirm bought securities but has not received themExposure to counterparty or market movement
DK / don’t know noticeCounterparty does not recognize tradeMust resolve promptly
Aged receivableAmount due but not collected timelyMay become nonallowable
Unsecured debitAmount owed without adequate collateralCapital deduction risk
Stock record differenceInternal records do not match actual positionsPotential capital and books/records issue
Suspense accountTemporary unresolved itemMust be investigated; cannot hide losses

Exam Rule of Thumb

If an item is old, unresolved, unsecured, disputed, or unsupported, expect the exam to push you toward a deduction, charge, notice, or corrective action.

Early Warning, Deficiency, and Corrective Action

The financial and operations principal must identify capital problems before they become firm-threatening.

ConditionBest exam response
Net capital below required minimumImmediate regulatory concern; firm cannot continue business as usual
Net capital approaching warning levelNotify as required, restrict withdrawals, raise capital, reduce business
AI ratio too highReduce liabilities, increase capital, or both
Books and records not currentFix immediately; cannot rely on unsupported capital computation
Unrecorded liability discoveredRecord it; recompute net capital
Large capital withdrawal proposedTest pro forma capital before approving
Material FOCUS error foundCorrect and amend as required
Clearing deposit becomes restrictedReassess allowability and net capital impact

Conservative Exam Answer Pattern

When capital is threatened, the best answer usually prioritizes:

  1. Recompute net capital accurately.
  2. Stop or limit business if required.
  3. Notify regulators when required.
  4. Correct books and records.
  5. Add capital or reduce liabilities.
  6. Document the action.

Capital Withdrawals and Subordinated Loans

Capital withdrawals are risky because they reduce the cushion protecting customers and creditors.

ItemExam focus
Owner withdrawalMust be tested against net capital after the withdrawal
Dividend or distributionSame capital effect as withdrawal
Repayment of subordinated loanOnly if permitted under agreement and capital rules
Unapproved loan from ownerMay be liability, not capital
Properly subordinated borrowingMay be added to net worth if it meets requirements
Temporary capital injectionMust be genuine and documented
Capital used to cover operating lossesCapital falls as losses accrue

Subordination Trap

A loan from an owner is not automatically capital. It must meet the requirements for qualified subordinated debt. Otherwise, it is a payable that may worsen aggregate indebtedness.

Securities Settlement and Operations

Even an introducing broker-dealer must understand trade flow, settlement exposure, and clearing relationships.

StageWhat happensSeries 28 focus
Order entryCustomer order acceptedCorrect account, capacity, and suitability/supervision context
ExecutionTrade occursTrade details must be captured accurately
Comparison / affirmationParties agree on trade termsDKs and breaks must be resolved
ClearanceClearing broker processes obligationsIntroducing firm reconciles clearing records
SettlementMoney and securities exchangedFails create exposure and possible charges
ConfirmationCustomer receives transaction detailsAccuracy and required disclosures
Statement cycleCustomer positions and balances reportedCarrying broker often responsible, but introducing firm must supervise its role

Current Settlement Awareness

For many U.S. securities, regular-way settlement is commonly tested as a short settlement cycle. Always confirm the current settlement standard in current exam materials, because settlement cycles can change.

Margin, Credit, and Customer Balances

An introducing firm may not carry margin balances itself, but questions can still test margin concepts because the firm introduces accounts and supervises customer activity.

ConceptReview point
Reg TFederal credit rule for initial margin in securities transactions
Maintenance marginOngoing equity requirement after purchase
Margin agreementCustomer authorization and disclosures matter
Day tradingHigher-risk activity with special requirements
Debit balanceCustomer owes money; carrying firm usually carries the balance
Credit balanceFirm or carrying broker owes customer
Introducing firm roleUnderstand, disclose, supervise, and coordinate with clearing firm
TrapAssuming the introducing firm can ignore margin because it does not carry accounts

Underwriting and Contingent Offerings

Series 28 candidates should recognize when underwriting activity affects capital or customer funds.

Offering typeFinancial operations issue
Firm commitment underwritingUnderwriter takes inventory risk; capital charge possible
Best effortsNo firm inventory commitment, but funds-handling rules matter
All-or-noneInvestor funds must be handled according to contingency terms
Minimum-maximumFunds handling depends on minimum being met
Escrow arrangementUsed to protect investor funds in contingent offerings
Open contractual commitmentMay require capital charge
Unsold allotmentMay create proprietary exposure

Offering Trap

A “best efforts” label does not eliminate financial responsibility. Customer funds in a contingent offering must be handled exactly as required by the offering terms and applicable rules.

SIPC and Customer Protection Concepts

SIPC concepts may appear in financial operations questions.

ConceptKnow this
SIPCProtects customers if a member broker-dealer fails financially, subject to limits and conditions
Not insurance against market lossSIPC does not make customers whole for bad investments
Assessments and reportsMember firms may have filing and assessment obligations
Customer propertyDistinct from firm property
Exam trapSaying SIPC protects against investment performance, fraud losses generally, or unsuitable recommendations

Supervisory and Principal Responsibilities

A Series 28 principal is expected to understand both calculation and control.

ResponsibilityWhat it means
Maintain accurate booksFinancial records must be current and supported
Monitor net capitalNot only at month-end or filing time
Approve financial reportsReports must reconcile to books
Supervise operations staffDelegation does not remove responsibility
Coordinate with clearing firmReconcile statements, deposits, commissions, fails
Escalate deficienciesNotify and correct when required
Maintain written proceduresProcedures should match actual workflow
Preserve recordsRecords must be retained and accessible
Support auditsProvide schedules, reconciliations, and evidence

Delegation Trap

A FinOp may delegate tasks, but not accountability. If a clerk prepares a capital computation incorrectly, the principal is still expected to supervise, review, and correct it.

AML, Privacy, and Operational Controls

The Series 28 is financial-operations focused, but operational control questions may include related compliance themes.

AreaFast review
AML programWritten program, customer identification, monitoring, suspicious activity escalation
Customer identificationVerify and document according to firm procedures
OFAC / sanctions screeningEscalate potential matches
Suspicious activityEscalate; do not ignore unusual money movement
PrivacyProtect nonpublic customer information
CybersecuritySafeguard systems and records
Business continuityEnsure critical operations can continue
Vendor oversightClearing and technology vendors still require supervision

Trial Balance and Reconciliation Review

A common exam pattern gives a list of balances and asks what adjustment is needed.

ProblemLikely effect
Bank statement lower than ledger cashCash may be overstated; net capital may be overstated
Outstanding checks not recordedLiabilities or cash reductions may be missing
Deposit in transit unsupportedPotential cash overstatement
Clearing receivable disputedMay be nonallowable
Commission payable omittedLiabilities understated; net worth overstated
Proprietary trade not recordedHaircuts may be missing
Fail not aged properlyCapital charge may be missed
Suspense account unresolvedMust investigate; may require deduction

Reconciliation Decision Rule

If a reconciliation difference cannot be explained and supported, do not give the firm capital credit for the favorable side of the difference.

Common Series 28 Candidate Mistakes

  1. Confusing net worth with net capital
    Net worth is only the starting point. Net capital requires regulatory deductions.

  2. Ignoring nonallowable assets
    Accounting assets are not always regulatory capital assets.

  3. Forgetting accruals
    Unpaid expenses can reduce net worth and increase aggregate indebtedness.

  4. Treating owner loans as capital automatically
    Only properly qualified subordinated borrowings receive capital treatment.

  5. Assuming introducing firms have no customer protection obligations
    Introducing firms still need proper handling, prompt transmission, records, and exemption support.

  6. Missing the clearing broker relationship
    Clearing deposits, commissions receivable, fails, and trade breaks often come from the clearing statement.

  7. Overlooking haircuts on proprietary positions
    Marketable securities are not counted at full market value for net capital.

  8. Failing to age receivables and fails
    Old items become capital problems.

  9. Choosing a business-growth answer over a capital-protection answer
    The exam usually rewards financial responsibility, not revenue maximization.

  10. Relying on labels instead of facts
    “Introduced,” “escrowed,” “subordinated,” or “fully disclosed” must be supported by actual documentation and conduct.

Fast Calculation Practice Table

Question asks for…Use…Watch for…
Net capitalNet worth plus qualified subordinated debt minus deductionsNonallowable assets and haircuts
Required net capitalGreater of fixed minimum or formula-based requirementAggregate indebtedness
Excess net capitalNet capital minus required net capitalEarly warning cushion
AI ratioAggregate indebtedness divided by net capitalLiabilities omitted from AI
Effect of expense accrualNet worth down; AI upDouble impact
Effect of prepaid expenseAsset may be nonallowableAccounting asset, regulatory deduction
Effect of proprietary stock positionHaircut reduces capitalConcentration or restricted stock
Effect of receivable agingDeduction or nonallowable treatmentCollectability
Effect of owner withdrawalCapital decreasesPro forma deficiency

Mini Drill Examples

Example 1: Nonallowable Asset

A firm has net worth of 300,000, including 40,000 of furniture and 20,000 of prepaid insurance. Before haircuts, what is the impact?

  • Furniture is nonallowable.
  • Prepaid insurance is generally nonallowable.
  • Tentative capital is reduced by 60,000 before other deductions.

Example 2: Accrued Expense

A firm forgot to accrue 25,000 in legal expenses.

  • Liabilities increase by 25,000.
  • Net worth decreases by 25,000.
  • Aggregate indebtedness may increase by 25,000.
  • Net capital and AI ratio both worsen.

Example 3: Proprietary Security Position

A firm owns marketable securities.

  • The position may be an allowable asset.
  • But it must be reduced by the applicable haircut.
  • If concentrated or illiquid, additional deductions may apply.

Example 4: Clearing Receivable

A clearing broker owes the introducing firm a commission receivable.

  • If current, supported, and collectible, it may receive favorable treatment.
  • If aged, disputed, or unsupported, expect nonallowable treatment or a charge.

Topic Drill Priorities

Use original practice questions to drill the highest-yield Series 28 areas in this order:

  1. Net capital computation

    • Nonallowable assets
    • Haircuts
    • Subordinated loans
    • Capital charges
  2. Aggregate indebtedness

    • Included vs excluded liabilities
    • AI ratio
    • Required capital
    • Excess capital
  3. Introducing broker-dealer operations

    • Fully disclosed clearing
    • Customer funds and securities
    • Clearing deposits
    • Commission receivables
  4. Books and records

    • Ledgers
    • Blotters
    • Trial balance
    • Reconciliations
    • Record preservation
  5. Regulatory reporting

    • FOCUS concepts
    • Annual audit support
    • Amendments and notices
    • SIPC-related concepts
  6. Operational risk

    • Fails
    • DKs
    • Aged receivables
    • Suspense items
    • Trade breaks
  7. Supervision and controls

    • Written procedures
    • Delegation
    • Escalation
    • Capital withdrawal review

Final Quick Review Checklist

Before you move into a mock exam, make sure you can answer these without notes:

  • What is the difference between net worth and net capital?
  • Which assets are usually nonallowable?
  • How do haircuts affect proprietary positions?
  • What liabilities are usually included in aggregate indebtedness?
  • How do you calculate excess net capital?
  • What happens when a firm discovers an unrecorded liability?
  • Why can a prepaid expense reduce regulatory capital?
  • What makes a receivable nonallowable?
  • How does an introducing firm handle customer checks and securities?
  • What is the purpose of a fully disclosed clearing agreement?
  • Why are fails and DKs financial responsibility issues?
  • What records support a FOCUS report?
  • What should a FinOp do when capital is near a warning level?
  • Why is an owner loan not automatically capital?
  • What is the difference between SIPC protection and market-loss protection?

Practical Next Step

Use this Quick Review to identify weak areas, then move directly into Series 28 topic drills with original practice questions and detailed explanations. Focus especially on net capital, aggregate indebtedness, nonallowable assets, customer funds handling, and FOCUS-report support before attempting full-length mock exams.

Browse Certification Practice Tests by Exam Family