2026/2027
Complete TAX 2601 Study Guide
and Exam Prep Companion
2026/2027 Version with Practice
Questions, Quizzes, and Detailed
Review
Question 1:
Douglas and Sue are related parties in a landlord–tenant arrangement. The IRS
challenges whether the rent paid reflects fair market value. This situation primarily
illustrates which tax principle?
A. Arm’s Length Concept
B. Continuity of Interest Concept
C. Tax Benefit Rule
D. Substance over Form Doctrine
Correct Answer: A. Arm’s Length Concept
Rationale: The arm’s length principle requires transactions between related parties to
be conducted as if they were unrelated, ensuring fair market value pricing. Since
Douglas and Sue are related, the IRS is questioning whether the rent reflects an
unbiased market rate. The continuity of interest concept applies to reorganizations,
not rental pricing. The tax benefit rule concerns recovery of previously deducted
items, while substance over form focuses on the true economic nature of transactions
rather than related-party pricing standards.
Question 2:
Which of the following sources of tax authority has the highest legal precedence?
A. Treasury Regulations
B. Revenue Procedures
C. Internal Revenue Code
D. Temporary Regulations
Correct Answer: C. Internal Revenue Code
Rationale: The Internal Revenue Code (IRC) is enacted by Congress and is the
highest authority in federal tax law. Treasury regulations interpret the IRC but cannot
override it. Revenue procedures provide administrative guidance, and temporary
regulations are intermediate interpretive rules that also rank below the IRC.
,2026/2027
Question 3:
A landlord leases property to a tenant who makes improvements not in lieu of rent. At
lease end, the improvements are not treated as income to the landlord. This outcome
reflects which principle?
A. Wherewithal to Pay Concept
B. Tax Benefit Rule
C. Arm’s Length Concept
D. Clear Reflection of Income Principle
Correct Answer: A. Wherewithal to Pay Concept
Rationale: The wherewithal to pay concept recognizes income when the taxpayer has
the ability to pay tax, which often excludes unrealized benefits such as tenant
improvements not exchanged for rent. The tax benefit rule applies to recovered
deductions, and the arm’s length concept applies to related-party pricing. Clear
reflection of income governs accounting methods but does not specifically exclude
non-cash lease improvements.
Question 4:
Which IRS administrative release is issued before a transaction is completed?
A. Letter Ruling
B. Technical Advice Memorandum
C. Determination Letter
D. Field Service Advice
Correct Answer: A. Letter Ruling
Rationale: A letter ruling is a written interpretation issued by the IRS before a
taxpayer completes a transaction, providing guidance on tax consequences. Technical
advice memoranda apply to completed transactions under audit. Determination letters
generally involve exempt status, and field service advice is internal IRS guidance.
Question 5:
Economic and social policy considerations most directly justify which of the
following tax treatments?
A. Education-related tax credits and exclusions
B. Disallowance of deductions for illegal bribes
C. Employer-provided health plan exclusions
D. Deduction for state and local income taxes
,2026/2027
Correct Answer: A. Education-related tax credits and exclusions
Rationale: Tax credits and exclusions encouraging education are classic examples of
tax policy shaped by social and economic objectives. While other options involve
policy considerations, education incentives most clearly reflect proactive government
encouragement of socially beneficial behavior.
Question 6:
Complete avoidance of capital gains tax occurs when appreciated property is
transferred at death.
True or False?
Correct Answer: True
Rationale: At death, appreciated property receives a step-up in basis to fair market
value, eliminating prior unrealized gains. As a result, no capital gain is recognized at
transfer, effectively avoiding capital gains tax on appreciation during the decedent’s
lifetime.
Question 7:
A specified service business taxpayer exceeds the income threshold for the §199A
deduction. Under which condition is the deduction still allowed?
A. If spouse income caused the threshold excess
B. If capital gains caused threshold excess
C. If prior three years were below threshold
D. None of the above
Correct Answer: D. None of the above
Rationale: For specified service businesses (SSBs), once taxable income exceeds the
threshold, the §199A deduction is fully disallowed regardless of the reason for
exceeding it. Neither spouse income, capital gains, nor prior-year compliance
reinstates eligibility.
Question 8:
Layla earns $200,000 QBI, $30,000 W-2 wages, and $20,000 qualified property
income. What is her §199A deduction (simplified assumption case)?
A. $0
B. $40,000
C. $48,820
D. $54,000
, 2026/2027
Correct Answer: B. $40,000
Rationale: The §199A deduction is generally 20% of QBI. 20% of $200,000 equals
$40,000. Wage and property limitations may apply at higher income levels, but in this
simplified scenario, the base calculation governs.
Question 9:
Ellie’s LLC reports QBI of $900,000 and taxable income of $740,000. What is her
§199A deduction?
A. $75,750
B. $148,000
C. $150,000
D. $180,000
Correct Answer: B. $148,000
Rationale: At high income levels, the deduction is limited by W-2 wages and property
rules. After applying limitation formulas, Ellie's allowable deduction is $148,000
rather than the full 20% of QBI.
Question 10:
A CPA operates an accounting firm (a specified service business) with income above
the threshold. What is the §199A deduction?
A. $0
B. $49,625
C. $78,000
D. $89,600
Correct Answer: A. $0
Rationale: Accounting firms are specified service businesses. Once income exceeds
the threshold, the deduction is fully disallowed, regardless of wage or property
limitations.
Question 11:
What happens when a §199A qualified business generates a net loss?
A. Carried back or forward as deduction
B. Lost permanently
C. Treated as loss in succeeding year
D. Converted to capital loss
Complete TAX 2601 Study Guide
and Exam Prep Companion
2026/2027 Version with Practice
Questions, Quizzes, and Detailed
Review
Question 1:
Douglas and Sue are related parties in a landlord–tenant arrangement. The IRS
challenges whether the rent paid reflects fair market value. This situation primarily
illustrates which tax principle?
A. Arm’s Length Concept
B. Continuity of Interest Concept
C. Tax Benefit Rule
D. Substance over Form Doctrine
Correct Answer: A. Arm’s Length Concept
Rationale: The arm’s length principle requires transactions between related parties to
be conducted as if they were unrelated, ensuring fair market value pricing. Since
Douglas and Sue are related, the IRS is questioning whether the rent reflects an
unbiased market rate. The continuity of interest concept applies to reorganizations,
not rental pricing. The tax benefit rule concerns recovery of previously deducted
items, while substance over form focuses on the true economic nature of transactions
rather than related-party pricing standards.
Question 2:
Which of the following sources of tax authority has the highest legal precedence?
A. Treasury Regulations
B. Revenue Procedures
C. Internal Revenue Code
D. Temporary Regulations
Correct Answer: C. Internal Revenue Code
Rationale: The Internal Revenue Code (IRC) is enacted by Congress and is the
highest authority in federal tax law. Treasury regulations interpret the IRC but cannot
override it. Revenue procedures provide administrative guidance, and temporary
regulations are intermediate interpretive rules that also rank below the IRC.
,2026/2027
Question 3:
A landlord leases property to a tenant who makes improvements not in lieu of rent. At
lease end, the improvements are not treated as income to the landlord. This outcome
reflects which principle?
A. Wherewithal to Pay Concept
B. Tax Benefit Rule
C. Arm’s Length Concept
D. Clear Reflection of Income Principle
Correct Answer: A. Wherewithal to Pay Concept
Rationale: The wherewithal to pay concept recognizes income when the taxpayer has
the ability to pay tax, which often excludes unrealized benefits such as tenant
improvements not exchanged for rent. The tax benefit rule applies to recovered
deductions, and the arm’s length concept applies to related-party pricing. Clear
reflection of income governs accounting methods but does not specifically exclude
non-cash lease improvements.
Question 4:
Which IRS administrative release is issued before a transaction is completed?
A. Letter Ruling
B. Technical Advice Memorandum
C. Determination Letter
D. Field Service Advice
Correct Answer: A. Letter Ruling
Rationale: A letter ruling is a written interpretation issued by the IRS before a
taxpayer completes a transaction, providing guidance on tax consequences. Technical
advice memoranda apply to completed transactions under audit. Determination letters
generally involve exempt status, and field service advice is internal IRS guidance.
Question 5:
Economic and social policy considerations most directly justify which of the
following tax treatments?
A. Education-related tax credits and exclusions
B. Disallowance of deductions for illegal bribes
C. Employer-provided health plan exclusions
D. Deduction for state and local income taxes
,2026/2027
Correct Answer: A. Education-related tax credits and exclusions
Rationale: Tax credits and exclusions encouraging education are classic examples of
tax policy shaped by social and economic objectives. While other options involve
policy considerations, education incentives most clearly reflect proactive government
encouragement of socially beneficial behavior.
Question 6:
Complete avoidance of capital gains tax occurs when appreciated property is
transferred at death.
True or False?
Correct Answer: True
Rationale: At death, appreciated property receives a step-up in basis to fair market
value, eliminating prior unrealized gains. As a result, no capital gain is recognized at
transfer, effectively avoiding capital gains tax on appreciation during the decedent’s
lifetime.
Question 7:
A specified service business taxpayer exceeds the income threshold for the §199A
deduction. Under which condition is the deduction still allowed?
A. If spouse income caused the threshold excess
B. If capital gains caused threshold excess
C. If prior three years were below threshold
D. None of the above
Correct Answer: D. None of the above
Rationale: For specified service businesses (SSBs), once taxable income exceeds the
threshold, the §199A deduction is fully disallowed regardless of the reason for
exceeding it. Neither spouse income, capital gains, nor prior-year compliance
reinstates eligibility.
Question 8:
Layla earns $200,000 QBI, $30,000 W-2 wages, and $20,000 qualified property
income. What is her §199A deduction (simplified assumption case)?
A. $0
B. $40,000
C. $48,820
D. $54,000
, 2026/2027
Correct Answer: B. $40,000
Rationale: The §199A deduction is generally 20% of QBI. 20% of $200,000 equals
$40,000. Wage and property limitations may apply at higher income levels, but in this
simplified scenario, the base calculation governs.
Question 9:
Ellie’s LLC reports QBI of $900,000 and taxable income of $740,000. What is her
§199A deduction?
A. $75,750
B. $148,000
C. $150,000
D. $180,000
Correct Answer: B. $148,000
Rationale: At high income levels, the deduction is limited by W-2 wages and property
rules. After applying limitation formulas, Ellie's allowable deduction is $148,000
rather than the full 20% of QBI.
Question 10:
A CPA operates an accounting firm (a specified service business) with income above
the threshold. What is the §199A deduction?
A. $0
B. $49,625
C. $78,000
D. $89,600
Correct Answer: A. $0
Rationale: Accounting firms are specified service businesses. Once income exceeds
the threshold, the deduction is fully disallowed, regardless of wage or property
limitations.
Question 11:
What happens when a §199A qualified business generates a net loss?
A. Carried back or forward as deduction
B. Lost permanently
C. Treated as loss in succeeding year
D. Converted to capital loss
