Use this guide to build the foundations for the REG (Regulation) section of the Uniform CPA Examination. Each concept explains a rule or distinction, works through an original example and identifies a specific error. Read the foundations before applying them to transactions, returns and entity calculations. Unless stated otherwise, examples isolate the issue being taught and assume no additional adjustments.
Professional Responsibilities and Federal Tax Procedures
1. Distinguishing tax authority from explanatory material
Identify whether a tax proposition comes from enacted law, a regulation, a court decision or explanatory guidance. These materials serve different roles. An accessible summary does not settle a conflict with applicable controlling authority. Check the relevant period, jurisdiction and transaction facts before deciding whether an authority supports a position.
Worked example: A general tax summary omits an exception that an applicable regulation expressly addresses. Apply the exception when analyzing the stated transaction.
Mistake to avoid: Treating every published tax explanation as equally authoritative.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
2. Separating a law's effective date from exam eligibility
A tax change's legal effective date and its eligibility for CPA Exam testing are separate questions. The AICPA policy uses the later of enactment and effectiveness, followed by its six-month testing window and calendar-quarter rule. Determine the applicable exam period before replacing an older rule in a practice calculation.
Worked example: For a hypothetical change enacted February 10 and effective January 15, six months after the later date is August 10; the next quarter begins October 1.
Mistake to avoid: Assuming a newly enacted tax rule is immediately testable.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
3. Due diligence when information is inconsistent
Due diligence requires reasonable attention to the accuracy and completeness of information used in tax work. Client information may be usable, but contradictions, omissions and implausible amounts require inquiry. Resolve the specific inconsistency rather than silently choosing whichever figure produces less tax.
Worked example: A revenue worksheet shows $74,000, while its supporting invoices total $79,000. Reconciliation identifies an omitted $5,000 invoice, so the corrected revenue is $79,000.
Mistake to avoid: Accepting a convenient total after noticing contradictory supporting records.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
4. Supporting an uncertain return position
Analyze the relevant facts, supporting authorities and standard applicable to the position and the practitioner's role. Disclosure may affect some consequences, but it does not automatically validate an incorrect position. A defensible analysis distinguishes uncertainty in interpreting a rule from missing evidence about what actually happened.
Worked example: A claimed expense has clear business purpose but no evidence of its amount. Explaining its purpose does not establish the deductible dollar figure.
Mistake to avoid: Using disclosure as a substitute for factual support or legal analysis.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
5. Responding to a discovered return error
When an error is discovered, establish what was wrong, which periods it affects and the likely consequences. Communicate the issue and appropriate correction options under the applicable professional rules. Client refusal does not make the original treatment accurate or justify repeating the same known error in later work.
Worked example: An omitted asset sale affects last year's return and this year's opening basis schedule. Correct the current schedule and address the earlier return separately.
Mistake to avoid: Carrying an identified error forward merely because the earlier return remains unchanged.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
6. Confidentiality and authorized disclosure
Tax information can be confidential even when a requester knows the client or the underlying transaction. Identify the recipient, information requested and applicable permission or exception before disclosure. Permission to perform tax work should not be treated as unrestricted permission to share the resulting records.
Worked example: A lender requests a client's return directly from the preparer. Establish appropriate authorization before providing the return, rather than relying on the lender's explanation.
Mistake to avoid: Assuming a third party's business relationship supplies the client's permission.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
7. Recognizing conflicts of interest
A conflict can arise when responsibilities to one client, another client or the practitioner's own interests compete. Identify the conflicting interests before deciding whether applicable rules permit continued work and what consent is required. Some conflicts cannot be resolved simply by obtaining signatures.
Worked example: Two business owners disagree about allocating sale proceeds. Preparing both returns requires evaluating their competing interests before recommending an allocation.
Mistake to avoid: Assuming a previously shared business interest eliminates a present conflict.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
8. Separating tax, penalties and interest
Underlying tax, penalties and interest are different components of an obligation. Tax reflects the substantive liability; penalties address specified failures; interest generally reflects the passage of time on an unpaid amount. Analyze the basis for each component separately because correcting or removing one does not necessarily eliminate the others.
Worked example: A problem states $2,000 of tax, $300 of penalties and $120 of interest. The total is $2,420; removing the penalty leaves $2,120.
Mistake to avoid: Assuming penalty relief also cancels the underlying tax and interest.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
9. Distinguishing examination, assessment and collection
An examination evaluates a return's treatment. Assessment records a tax liability, while collection concerns obtaining payment. A notice's purpose determines the appropriate response and available procedural path. Read its stated deadlines and instructions; a disagreement about the amount and a request about payment address different issues.
Worked example: A taxpayer agrees that an additional $1,800 is correct but cannot pay immediately. The unresolved issue concerns payment, rather than substantiating the deduction under examination.
Mistake to avoid: Treating every tax notice as the same procedural event.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
10. Connecting records to the tax claim they support
Evidence should establish the elements of the particular tax claim: amount, timing, ownership, purpose or other required facts. A payment record may show that money changed hands without establishing deductibility. Records supporting asset basis can remain relevant after the acquisition year because later depreciation or disposition calculations depend on them.
Worked example: A $4,200 bank payment proves payment, but the invoice identifies it as equipment rather than a current repair.
Mistake to avoid: Assuming proof of payment establishes both business purpose and tax classification.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
Business Law Foundations
11. Offer, acceptance and preliminary negotiation
For a standard common-law contract analysis, distinguish a sufficiently definite offer from an invitation to negotiate. Acceptance must satisfy the applicable formation rules. Changed terms can indicate a counteroffer, although sales-of-goods rules may treat differing terms differently. First identify the governing framework, then analyze what each communication accomplishes.
Worked example: Under stated common-law assumptions, accepting a $900 service offer only if the price becomes $800 is a counteroffer, not acceptance of the $900 offer.
Mistake to avoid: Applying common-law acceptance rules automatically to every sale of goods.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
12. Consideration and a bargained-for exchange
Consideration generally involves something legally sufficient exchanged for a promise, such as an act, forbearance or return promise. Its existence differs from whether the bargain seems financially equal. A gratuitous promise ordinarily lacks this exchange, while enforceability may still require analysis of other doctrines and exceptions.
Worked example: A consultant promises a report in return for $600. The report and payment supply the exchange even if the client's expected benefit exceeds $600.
Mistake to avoid: Rejecting consideration merely because the exchanged items have unequal market values.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
13. A writing requirement versus contract formation
Some contract categories require a sufficient writing for enforcement under the applicable law, subject to exceptions. Separate whether the parties formed an agreement from whether that agreement can be enforced against a particular party. A writing's required content and signature depend on the governing rule.
Worked example: A problem expressly places an agreement within a writing requirement and provides no exception or sufficient signed record. Agreement alone does not resolve enforceability.
Mistake to avoid: Assuming every oral agreement is invalid or every written agreement is enforceable.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
14. Contract damages and mitigation
Expectation damages generally seek to place the injured party in the economic position performance would have produced, subject to proof and applicable limitations. Avoid double counting costs saved because of breach. Mitigation considers reasonable opportunities to reduce loss; it does not require unreasonable sacrifices or guarantee that replacement performance will be available.
Worked example: A $10,000 service contract would have required $6,000 of costs. If breach prevents all performance and all costs are avoided, the lost margin is $4,000.
Mistake to avoid: Claiming the entire contract price while ignoring avoided performance costs.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
15. Actual authority and apparent authority
Actual authority concerns the principal's authorization to the agent. Apparent authority concerns a third party's reasonable belief based on the principal's manifestations. The agent's unsupported assertion of authority does not itself establish apparent authority. Identify who communicated the relevant facts and to whom.
Worked example: A company tells a supplier that its purchasing manager may approve orders. That communication can support apparent authority even if an undisclosed internal restriction exists.
Mistake to avoid: Basing apparent authority solely on the agent saying, 'I am authorized.'
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
16. Disclosed principals and an agent's personal liability
In a basic authorized-contract setting, an agent acting for a disclosed principal ordinarily does not become a contracting party merely by acting as agent. Disclosure, authority, contract wording and applicable exceptions matter. An undisclosed principal or an express personal undertaking can change the analysis.
Worked example: A duly authorized agent signs a contract clearly for a named company, with no personal promise. Under the stated assumptions, the company's obligation is not automatically the agent's.
Mistake to avoid: Assuming every person who signs for a business guarantees its performance.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
17. Business form and personal exposure
Business form affects whether business obligations ordinarily reach owners personally. Sole proprietorships generally do not separate owner and business liability; corporations and limited liability companies generally provide a liability boundary. Personal guarantees, the owner's own misconduct and other exceptions require separate analysis rather than reliance on the entity label alone.
Worked example: An LLC member personally guarantees a $12,000 loan. The entity's usual liability boundary does not remove the member's separate guarantee obligation.
Mistake to avoid: Treating limited liability as protection from every personal undertaking.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
18. Secured debt, collateral and priority
A secured claim is connected to identified collateral; an unsecured claim lacks that particular security interest. Creation, enforceability, perfection and priority are separate questions. A security agreement alone does not answer who wins against competing claimants. Apply the governing priority rules and exceptions stated in the problem.
Worked example: A problem expressly gives Lender A priority in collateral worth $9,000 against its $7,000 debt. Full recovery for A leaves $2,000 of collateral value.
Mistake to avoid: Assuming every creditor describing itself as secured has first priority.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
19. Guarantees and the underlying obligation
A guarantee is a separate undertaking concerning another party's obligation. Analyze the guaranteed debt, scope, conditions and available defenses rather than assuming every guarantee is identical. A guarantee of payment and one requiring collection efforts against the debtor can create different obligations under the governing terms and law.
Worked example: A problem states that a valid payment guarantee covers principal only. For $8,000 principal and $400 interest, the stated guaranteed amount is $8,000.
Mistake to avoid: Expanding a guarantee beyond the obligations its terms actually cover.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
20. Bankruptcy priority versus discharge
Priority concerns the order in which claims receive distributions. Discharge concerns whether a debtor remains personally responsible for a debt after the proceeding. Security interests, exemptions and discharge exceptions introduce separate issues. Do not infer dischargeability from payment priority or assume that a discharge necessarily eliminates every lien.
Worked example: A problem labels one claim higher priority but nondischargeable. Its favorable distribution position and its survival after discharge are two distinct stated attributes.
Mistake to avoid: Using a claim's distribution priority to determine whether it disappears.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
Federal Taxation of Property Transactions
21. Initial cost basis
Cost basis generally includes the purchase price and qualifying costs needed to acquire and prepare an asset for its intended use. Identify capitalized acquisition costs before computing depreciation or gain. Financing costs, recurring operating expenses and other payments may require different treatment, so do not include every cash outflow automatically.
Worked example: Equipment costs $18,000, qualifying delivery costs $700 and installation costs $1,300. Its initial basis is $20,000 under the stated capitalization assumptions.
Mistake to avoid: Using only the invoice price when qualifying acquisition costs must be capitalized.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
22. Adjusted basis after improvements and depreciation
Adjusted basis starts with initial basis and reflects later additions and reductions. Qualifying improvements generally increase basis; depreciation generally reduces it under the applicable allowed-or-allowable rules. Market value is a different measurement. Keep an asset's tax basis schedule separate from estimates of what the asset could sell for.
Worked example: An asset has $24,000 initial basis, $4,000 of capital improvements and $9,000 of required depreciation reductions. Adjusted basis is $19,000.
Mistake to avoid: Subtracting depreciation twice or replacing tax basis with current market value.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
23. Amount realized from a disposition
Amount realized generally reflects consideration received, including qualifying noncash consideration and debt relief, reduced by applicable selling costs. Cash received is therefore not always the complete figure. Read debt assumptions carefully and distinguish liabilities transferred as part of the disposition from obligations the seller continues to owe.
Worked example: A sale provides $30,000 cash and $8,000 qualifying debt relief, with $2,000 selling costs. Amount realized is $36,000.
Mistake to avoid: Omitting debt relief or subtracting selling costs from basis instead of sale proceeds.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
24. Realized gain versus recognized gain
Realized gain or loss compares amount realized with adjusted basis. Recognized gain or loss is the portion included in the current tax calculation under the applicable rules. Exclusions, deferrals and disallowances can separate the two amounts. Nonrecognition requires a qualifying rule; it does not follow merely from reinvesting sale proceeds.
Worked example: Amount realized is $45,000 and adjusted basis is $32,000. Realized gain is $13,000; with no applicable exclusion or deferral, recognized gain is also $13,000.
Mistake to avoid: Assuming reinvestment alone makes a realized gain unrecognized.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
25. Capital assets and ordinary-income property
Tax character depends on the asset's statutory classification and use, not simply on whether it is valuable or held for a long time. Inventory and receivables can receive ordinary treatment, while investment assets commonly receive capital treatment. Depreciable business property requires its own classification and potential recapture analysis.
Worked example: A dealer sells a vehicle held as inventory for a $3,000 gain. Long ownership does not convert that inventory gain into capital gain.
Mistake to avoid: Calling every asset sale a capital transaction.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
26. Holding period and gain character
For a capital asset, distinguish short-term from long-term holding periods using the applicable acquisition and disposition rules. A holding period of more than one year generally supports long-term classification, but special acquisition rules can alter the analysis. Holding period does not override whether the property qualifies as a capital asset.
Worked example: Ordinarily purchased investment shares held for fourteen months produce long-term capital gain when sold, assuming no special holding-period rule applies.
Mistake to avoid: Treating exactly one year as more than one year or ignoring special acquisition rules.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
27. Gift basis and inherited-property basis
Gifted property can use the donor's basis for gain and a lower gift-date value for loss, subject to applicable adjustments. A sale between those two figures can produce neither gain nor loss. Inherited property generally uses an applicable estate valuation, with exceptions. Identify how the property was acquired before calculating its basis.
Worked example: Gifted property has $12,000 donor basis and $9,000 gift-date value. A sale for $10,500 produces neither gain nor loss under the stated dual-basis assumptions.
Mistake to avoid: Using gift-date value for every gifted-property sale.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
28. Depreciation recapture within a total gain
A gain on depreciable property can contain an ordinary-income recapture component. Compute total gain first, then apply the recapture rule relevant to the asset; classify any remainder separately. Different property categories have different rules, so a single universal recapture formula is inappropriate.
Worked example: Assume equipment has $15,000 total gain and $11,000 of depreciation subject to full ordinary recapture. Ordinary recapture is $11,000; $4,000 remains for separate classification.
Mistake to avoid: Adding recapture to total gain instead of treating it as part of that gain.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
Federal Taxation of Individuals
29. Filing status follows qualifying facts
Filing status depends on marital status, household circumstances and the requirements for the relevant category. Providing financial support alone does not establish every household-based status. Determine the category from the facts before applying a deduction amount or tax schedule, and examine special rules when the problem identifies them.
Worked example: An unmarried taxpayer pays a friend's expenses but does not meet the stated qualifying-person requirement. Those payments alone do not establish head-of-household eligibility.
Mistake to avoid: Choosing the most favorable filing status before checking its requirements.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
30. Qualifying child and qualifying relative tests
Dependency analysis has separate pathways with different requirements involving relationship, residence, age, support and, where applicable, income. Apply the correct pathway rather than combining favorable pieces of both. Support questions also differ: a qualifying child's self-support test is not the same as a taxpayer's support requirement for a qualifying relative.
Worked example: A problem specifies that a parent satisfies the qualifying-relative relationship and income tests. The taxpayer must still establish the applicable support requirement.
Mistake to avoid: Assuming relationship alone establishes dependency.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
31. Cash and noncash compensation
Compensation can be taxable whether received in cash, property or services. A qualifying exclusion may change the result for a particular benefit, but noncash form alone does not create an exclusion. Determine the proper value and any amount the employee paid before including the benefit in compensation.
Worked example: An employee receives $48,000 cash wages and property worth $2,000 as taxable compensation. With no exclusion or employee payment, compensation totals $50,000.
Mistake to avoid: Reporting only cash wages while ignoring taxable property received for work.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
32. Interest and dividend classification
Investment receipts can require different tax classifications even when paid by the same account. Interest, ordinary dividends, qualifying dividends and return-of-capital distributions are not interchangeable. Qualification for preferential treatment depends on applicable requirements, including relevant holding-period conditions, rather than merely on an account statement's broad description.
Worked example: A statement reports $600 interest and $900 dividends. Only $500 of those dividends is expressly identified as qualifying under all applicable conditions.
Mistake to avoid: Applying preferential dividend treatment to the entire account's investment income.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
33. Excluded income versus deferred income
An exclusion removes a qualifying receipt from income under the applicable rule. Deferral postpones recognition until a later event or period. The distinction affects future calculations: a deferred amount may become taxable later, while an excluded amount does not necessarily create a later inclusion.
Worked example: A problem states that a $4,000 receipt is permanently excluded and another $4,000 is deferred until next year. Neither is included now, but only the second has a stated future inclusion.
Mistake to avoid: Assuming everything omitted from current income is permanently tax-free.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
34. Adjusted gross income as an intermediate calculation
Adjusted gross income generally equals gross income reduced by qualifying adjustments. It precedes the standard or itemized deduction calculation and can affect other limitations. Place each allowed deduction at its correct stage; moving an item between stages can change income-based restrictions even when an initial subtraction looks identical.
Worked example: Gross income is $82,000 and allowable adjustments are $3,000. Adjusted gross income is $79,000 before subtracting any standard or itemized deduction.
Mistake to avoid: Subtracting itemized deductions when computing adjusted gross income.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
35. Choosing between standard and itemized deductions
Where both options are available, compare the allowed standard deduction with total allowable itemized deductions. Evaluate itemized amounts after applicable restrictions, not from raw spending. Eligibility and special rules can limit the choice, so establish those facts before taking the larger figure.
Worked example: Assume the taxpayer may choose either option: a $15,000 standard deduction or $13,800 allowable itemized deductions. The standard deduction reduces income by $1,200 more.
Mistake to avoid: Adding the standard deduction to itemized deductions.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
36. Applying an itemized deduction threshold
Some itemized deductions allow only the portion of qualifying spending above an income-based threshold; others have caps or separate restrictions. Compute eligible spending first, then apply the specific limitation supplied by the problem. A threshold reduces deductible spending rather than directly reducing the taxpayer's tax liability.
Worked example: Assume qualifying expenses are $9,000, adjusted gross income is $80,000 and the stated threshold is 7.5%. The threshold is $6,000, leaving $3,000 deductible.
Mistake to avoid: Deducting the entire expense amount without applying the stated threshold.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
37. Tax deductions and tax credits
A deduction reduces income subject to tax; a credit reduces tax under its applicable rules. A deduction's benefit depends on the tax calculation, whereas a credit's usable amount depends on its limitations and refundability. Keep the two mechanisms separate when comparing otherwise similar dollar amounts.
Worked example: At an assumed constant 20% marginal rate, a $1,000 deduction saves $200. An available $1,000 credit reduces tax by $1,000, subject to its stated limits.
Mistake to avoid: Treating a $1,000 deduction as a $1,000 reduction in tax.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
38. Refundable and nonrefundable credits
A nonrefundable credit generally cannot reduce the relevant tax below zero. A refundable credit can produce an additional refund if its eligibility rules are met. Some credits have mixed features or special ordering rules, so use the credit's stated characteristics rather than inferring refundability from its name.
Worked example: With $700 tax and a $1,000 credit, assume no other restrictions. A nonrefundable credit reduces tax to zero; a fully refundable credit produces a $300 refund.
Mistake to avoid: Assuming every unused credit becomes a cash refund.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
39. Netting capital gains and losses
Separate short-term and long-term capital items, net within each category, then combine opposing net results under the applicable rules. The resulting amount and character matter for the tax calculation. Keep ordinary gains and losses outside this capital netting process unless a specific rule changes their classification.
Worked example: Short-term gains of $4,000 and losses of $1,500 yield $2,500 net gain. A $6,000 net long-term loss produces an overall $3,500 capital loss.
Mistake to avoid: Ignoring holding-period categories or mixing ordinary business income into capital netting.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
40. Capital loss deductions and carryforwards
A net capital loss may exceed the amount an individual can deduct against other income in the current year. Apply the applicable annual limitation, then track the unused loss and its character under carryforward rules. The current deduction and the total economic loss are therefore different amounts.
Worked example: Assume a $7,400 net capital loss and a stated $3,000 current deduction limit. Deduct $3,000 now and carry forward $4,400, subject to the applicable rules.
Mistake to avoid: Treating the deduction limit as cancellation of the remaining loss.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
41. Passive losses and participation
A business or rental loss can be limited under passive-activity rules even when its expenses are otherwise valid. Classification depends on applicable participation and activity rules, with special treatment and exceptions for certain rentals. Portfolio income generally does not become passive income merely because the taxpayer performs little work to earn it.
Worked example: A problem states $6,000 of passive loss, $2,000 of passive income and no exception. The passive limitation leaves $4,000 suspended, assuming other loss limits are satisfied.
Mistake to avoid: Using bank interest as passive income to release a passive business loss.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
42. Retirement distributions and recovery of basis
A retirement distribution's taxable portion depends on the account type, prior tax treatment of contributions and applicable distribution rules. After-tax investment may permit basis recovery, but it does not automatically make the whole distribution tax-free. Follow the specified allocation method and evaluate any additional-tax exceptions separately.
Worked example: A problem states that a $10,000 distribution includes $2,000 of permitted basis recovery. Its taxable portion is $8,000 before considering any separate additional tax.
Mistake to avoid: Excluding the whole distribution because some contributions were made after tax.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
43. Self-employment profit and separate tax calculations
A sole proprietor generally computes business profit from receipts less allowable business costs. That profit can affect both income tax and a separate self-employment tax calculation. The two taxes use different mechanisms; business profit alone does not supply the final self-employment tax without the applicable adjustments, limits and rates.
Worked example: A proprietor has $68,000 receipts and $23,000 allowable costs. Business profit is $45,000; additional rules are needed to calculate the associated taxes.
Mistake to avoid: Multiplying gross receipts by a tax rate before deducting allowable business costs.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
44. Tax liability, payments and the final balance
Tax liability is determined through the return's income, deduction, tax and credit calculations. Withholding and estimated payments generally satisfy that liability rather than reduce taxable income. Compare final liability with payments and any separately applicable refundable amounts to determine a balance due or refund.
Worked example: Final tax liability after nonrefundable credits is $8,600. Withholding is $7,100 and estimated payments are $2,000. With no other items, the refund is $500.
Mistake to avoid: Subtracting withholding from income or confusing a refund with zero tax liability.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
Federal Taxation of Entities
45. Legal entity form and federal tax classification
An entity's legal name does not always determine its federal tax treatment. A limited liability company can have different tax classifications depending on ownership and valid elections. Establish the classification before deciding whether income is taxed at the entity level, passed through to owners or reported as part of an owner's activity.
Worked example: A problem expressly states that an LLC is taxed as a partnership. Apply partnership tax principles rather than assuming LLC income receives corporate treatment.
Mistake to avoid: Using limited liability as proof that an entity is taxed as a corporation.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
46. Computing C corporation taxable income
A C corporation generally computes its own taxable income from includible receipts and allowable deductions, subject to corporate-specific adjustments and limitations. Financial-statement profit is only a starting point when book and tax treatment differ. Calculate taxable income before applying the applicable tax rate or considering shareholder-level consequences.
Worked example: A problem gives $240,000 includible revenue, $90,000 allowable cost of goods sold and $70,000 other allowable deductions. Taxable income is $80,000 before other stated adjustments.
Mistake to avoid: Applying a tax rate to revenue rather than taxable income.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
47. Permanent book-tax differences
A permanent difference arises when an item affects book income or taxable income without an offsetting tax treatment in a later period. Classify the difference by its direction in the reconciliation. An expense recorded in books but permanently nondeductible for tax is generally added back when moving from book income to taxable income.
Worked example: Book income is $50,000 after a $2,000 expense expressly stated to be permanently nondeductible. With no other differences, taxable income is $52,000.
Mistake to avoid: Expecting every book-tax difference to reverse in a future year.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
48. Temporary book-tax differences
A temporary difference results when book and tax rules recognize an item's effects in different periods. Track both the current adjustment and its later reversal. Faster tax depreciation can reduce current taxable income relative to book income without permanently eliminating income over the asset's full recovery period.
Worked example: Book income is $40,000 after $5,000 book depreciation. Tax depreciation is $8,000. With no other differences, taxable income is $37,000.
Mistake to avoid: Adding tax depreciation to book depreciation instead of replacing its effect in the reconciliation.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
49. Cash and accrual timing
Under a basic cash-method analysis, receipt and payment drive timing, subject to exceptions such as constructive receipt and capitalization. Accrual methods generally focus on when the right to income or liability becomes fixed, with additional requirements for deductions. Method eligibility and special timing rules must be established separately.
Worked example: Services are completed in December and paid in January. Under stated ordinary cash-method assumptions, income is recognized in January; under stated accrual assumptions, it is recognized in December.
Mistake to avoid: Assuming invoice date always determines taxable income under every accounting method.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
50. Current expenses and capital expenditures
An ordinary business payment can be currently deductible or capitalized depending on what it acquires or improves. A qualifying repair may maintain existing condition, while an expenditure creating or materially improving an asset may require capitalization. Dollar size alone does not settle treatment; applicable exceptions and elections require separate consideration.
Worked example: A problem identifies $600 as a deductible repair and $4,000 as a capital improvement. The immediate deduction is $600, not $4,600.
Mistake to avoid: Expensing every business payment merely because it was necessary or paid in cash.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
51. C corporation distributions and earnings and profits
For a basic nonliquidating cash distribution, earnings and profits help determine the dividend portion under the applicable ordering rules. A remaining nondividend amount generally reduces shareholder stock basis, with any excess potentially producing gain. Earnings and profits are a tax measure and are not automatically identical to retained earnings.
Worked example: Assume $9,000 distributed, $5,000 dividend treatment and $3,000 stock basis. The remaining $4,000 produces $3,000 basis recovery and $1,000 gain.
Mistake to avoid: Treating every corporate distribution as either entirely a dividend or entirely tax-free.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
52. S corporation income versus cash distributions
A valid S corporation generally passes tax items through to shareholders, with specified exceptions and possible entity-level taxes. A shareholder's allocated income and cash received are separate amounts. Establish valid S status before using these rules; the classification requires eligibility and a valid election rather than simply choosing a business label.
Worked example: A shareholder is allocated $12,000 taxable income but receives only $4,000 cash. The smaller distribution does not reduce the allocated income to $4,000.
Mistake to avoid: Assuming S corporation shareholders are taxed only when cash is distributed.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
53. S corporation allocation by ownership and time
Under ordinary S corporation allocation rules, items generally follow shares owned and days of ownership rather than a freely negotiated profit-sharing arrangement. Ownership changes and qualifying elections can require different period calculations. Use the rule specified in the problem and distinguish an income allocation from cash distribution decisions.
Worked example: Assume unchanged 25% ownership throughout the year and $80,000 allocable ordinary income. The shareholder's allocation is $20,000, regardless of a different cash distribution amount.
Mistake to avoid: Allocating income according to cash withdrawn rather than the applicable ownership rule.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
54. S corporation stock basis and debt basis
Stock basis and qualifying debt basis are separate shareholder measures. They can affect loss deductions, but stock distributions generally require stock-basis analysis. A corporation's loan from a bank does not automatically give a shareholder debt basis merely because the shareholder guarantees it. Determine whether the applicable debt-basis requirements are satisfied.
Worked example: A shareholder has $6,000 stock basis and $4,000 qualifying direct-loan basis. These remain separate schedules rather than a single $10,000 distribution basis.
Mistake to avoid: Treating every corporate borrowing or shareholder guarantee as shareholder debt basis.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
55. S corporation distributions and stock basis
In a simplified S corporation case without accumulated C corporation earnings and profits, a nondividend cash distribution generally reduces stock basis before producing gain from an excess. Income, deductions and other basis adjustments must be incorporated in the applicable order. Debt basis ordinarily does not shelter a stock distribution.
Worked example: After all required preceding adjustments, stock basis is $7,000 and the qualifying cash distribution is $9,500. Basis falls to zero and excess distribution gain is $2,500.
Mistake to avoid: Using debt basis to eliminate gain on a distribution exceeding stock basis.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
56. Partnership contributions and carryover basis
A qualifying property contribution to a partnership generally receives nonrecognition treatment, subject to exceptions. Carryover basis preserves the contributed property's tax history rather than automatically resetting it to fair market value. Distinguish the partner's outside basis in the interest from the partnership's inside basis in its assets.
Worked example: Assume property worth $30,000 with $18,000 tax basis is contributed without liabilities or applicable exceptions. Initial outside basis and the property's inside basis are each $18,000.
Mistake to avoid: Using fair market value as tax basis merely because it determines the economic contribution.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
57. Partnership ordinary income and separately stated items
Partnership items that can affect partners differently must be kept separate from ordinary business income when required. Their character and limitations are then evaluated at the partner level. Separately stated does not mean excluded from tax; it means that combining the item into ordinary income would conceal relevant treatment.
Worked example: A partner receives $10,000 ordinary income and a separately stated $1,000 capital gain. Report the items in their respective categories rather than as $11,000 ordinary income.
Mistake to avoid: Assuming all pass-through items retain only one ordinary-income character.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
58. Partnership liabilities and outside basis
A partner's allocable share of partnership liabilities can affect outside basis under applicable liability-allocation rules. Increases and decreases have different effects, and recourse and nonrecourse liabilities require different analysis. Do not replace the required allocation with a percentage assumption unless the problem establishes that assumption.
Worked example: Outside basis is $14,000 before liability changes. The problem specifies a $3,000 increase in the partner's qualifying liability share. Adjusted outside basis becomes $17,000.
Mistake to avoid: Ignoring liabilities when computing basis or assuming every liability follows profit-sharing percentages.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
59. Partnership cash distributions and outside basis
In a basic nonliquidating cash distribution, compare money distributed with the partner's adjusted outside basis under the applicable rules. Cash generally reduces basis; an excess can trigger gain. Liability decreases can also be treated as money distributed, so a bank transfer may not represent the whole distribution for tax purposes.
Worked example: Assume adjusted outside basis is $11,000 and total money distributed, including any deemed money, is $13,000. Basis becomes zero and the excess gain is $2,000.
Mistake to avoid: Allowing outside basis to become negative after a cash distribution.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
60. Applying owner-level loss limitations in sequence
A pass-through loss can face several independent limits. First determine the applicable basis limit, then evaluate at-risk and passive-activity restrictions, followed by any other applicable limitations. Track suspended amounts by the rule that suspended them because their release conditions differ. Entity profit-sharing percentages alone do not establish current deductibility.
Worked example: A $10,000 loss is limited to $7,000 by basis and then $5,000 by at-risk rules. Before any passive limit, $5,000 remains potentially deductible.
Mistake to avoid: Treating adequate basis as proof that the entire allocated loss is currently deductible.
Source reference: Learn what to study for the CPA Exam | Resources | AICPA & CIMA
Exam source
Exam identity verified:
Browse all study guides