Learn how Series 28 tests minimum net capital, aggregate indebtedness, allowable versus non-allowable assets, net worth adjustments, other deductions, haircuts, and final net capital judgment for introducing firms.
Net capital is the largest Series 28 function and the main technical pressure point. The exam is not only testing whether you can do arithmetic. It is testing whether you can classify balances correctly, understand what changes minimum capital requirements, distinguish allowable from non-allowable assets, recognize when deductions or haircuts apply, and know when withdrawals or business changes create restrictions or escalation.
The strongest answers usually classify first, compute second, and escalate third if the result creates a capital or withdrawal problem.
Topic snapshot
Item
What matters here
Weight
33%
Main skill
identify the correct classification and capital effect before doing any computation
Typical trap
doing fast math on the wrong base because the asset, liability, or deduction was misclassified
Strongest first instinct
ask what requirement applies, what the item is, whether it is allowable, and what deduction or haircut follows
Series 28 is testing whether you can think like a limited-scope FINOP when capital gets tight or classification gets messy. Strong answers know that the hard part is usually not the arithmetic itself. It is recognizing what belongs in the calculation and what supervisory consequence follows from the result.
Section-by-section lesson
Minimum net capital requirement, introducing status, and basic vs alternative method
The first question is often which threshold or method applies. If you miss the introducing-firm status or the relevant method, the rest of the computation can be clean and still be wrong.
Product activity, clearing relationships, and changes that affect minimum capital
Changes in activity or clearing structure can change the capital answer. The FINOP should ask whether the firm’s current business model still matches the assumptions behind its capital treatment.
Aggregate indebtedness, cash liabilities, deferrals, and exclusions
These questions test liability classification and whether something truly belongs in aggregate indebtedness. Series 28 rewards careful treatment rather than quick memorization.
Allowable assets, non-allowable assets, receivable aging, and collateralization
Asset-quality questions are central because many wrong answers come from carrying something as valuable for capital purposes when it should not be. Aging and collateral facts matter because they can change the classification.
Net worth adjustments: deferred taxes, discretionary liabilities, guarantees, and subordinations
This section tests how equity-related adjustments and support arrangements affect final capital. The better answer usually asks what can really be relied on and what still weakens the capital picture.
Other deductions: unsecured balances, securities differences, financing charges, and fidelity bond impact
This section is about cleanup discipline. A candidate may know the main formula but still miss the exam because the smaller deductions are ignored.
Haircuts, ready market, undue concentration, restricted or control securities, and open commitments
Haircuts are where market risk enters the capital answer. The key is not only the percentage logic but whether the security or position qualifies for the treatment the candidate wants to use.
Final net capital computation, withdrawals, consolidations, and business curtailment
The exam often finishes by asking what happens after the number is known. That is where weak candidates keep answering as if the result were merely informational. A capital result can change what the firm may withdraw, continue, or curtail.
Net-capital table
If the vignette shows…
Stronger implication
uncertainty about firm status or method
threshold determination comes first
asset that feels valuable but lacks capital quality
allowable vs non-allowable issue
liability or deferral described loosely
aggregate-indebtedness classification issue
proprietary position or concentration exposure
haircut and market-risk deduction issue
weak result followed by proposed withdrawal
restriction and escalation issue
What stronger answers usually do
classify the firm and method before doing math
decide whether the item is allowable before counting it
distinguish threshold, deduction, and haircut issues cleanly
think about the supervisory consequence after the final number is known
Sample Exam Question
A FINOP includes an aged receivable as an allowable asset in a net capital computation because the customer is expected to pay soon, and the inclusion prevents a projected capital shortfall. What is the strongest conclusion?
A. The treatment is acceptable if the customer has paid reliably in the past
B. The treatment may be weak because asset aging and collateralization affect whether the receivable is allowable for capital purposes
C. The treatment is acceptable because Series 28 focuses on introducing firms, not carrying firms
D. The issue matters only if a withdrawal is requested
Answer: B
Series 28 net-capital questions usually punish optimistic classification. A receivable does not become allowable just because management expects payment.
Common traps
doing arithmetic before choosing the right treatment
assuming introducing-firm status solves all capital questions
ignoring smaller deductions after getting the main formula right
forgetting that the result may trigger restrictions or curtailment
Key takeaways
Net capital is the largest Series 28 block.
The main exam skill is classification discipline, not fast arithmetic alone.
Strong answers ask what the item is, whether it counts, how it is adjusted, and what the result forces the firm to do next.
Study minimum net capital requirement, introducing status, and basic vs alternative method (3.1) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study product activity, clearing relationships, and changes that affect minimum capital (3.1) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study aggregate indebtedness, cash liabilities, deferrals, and exclusions (3.2) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study allowable assets, non-allowable assets, receivable aging, and collateralization (3.3) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study net worth adjustments: deferred taxes, discretionary liabilities, guarantees, and subordinations (3.4) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study other deductions: unsecured balances, securities differences, financing charges, and fidelity bond impact (3.5) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study haircuts, ready market, undue concentration, restricted or control securities, and open commitments (3.6) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.
Study final net capital computation, withdrawals, consolidations, and business curtailment (3.7) for the FINRA Series 28 Introducing Broker-Dealer FINOP exam with learning objectives, control logic, and exam traps.