Under the regular research credit method, the base amount equals the fixed-base percentage multiplied by the average annual gross receipts for the prior four years. With a 3% fixed-base percentage and average gross receipts of $300,000: base = 3% x $300,000 = $9,000. Answer B is correct. Answer A ($6,000) would result from applying 2%, not 3%. Answer C ($12,000) would result from applying 4%. Answer D ($100,000) represents the difference between current QREs and prior-year average QREs, which is not the base amount in the regular credit formula.

Wages paid to employees directly engaged in qualified research activities are a primary component of qualified research expenses under Section 41. Answer D is correct. Answer A is incorrect because research in the social sciences, arts, or humanities does not meet the technological uncertainty requirement and is explicitly excluded from the definition of qualified research. Answer B is incorrect because costs to acquire existing technology, such as licensing fees, do not qualify as QREs. Answer C is incorrect because research conducted outside the United States does not qualify for the Section 41 credit.

Under Section 38(d), the general business credit is used in the following order: (1) carrybacks from the earliest year first, (2) carryforwards in order from earliest to most recent, and (3) current-year credits last. This ordering ensures that credits closest to expiration are consumed first. Answer A is incorrect because most recent credits are used last, not first. Answer B is incorrect because carryover credits are used before current-year credits, but current-year credits come after all carryforwards, not before them. Answer C is incorrect because current-year credits are consumed after carrybacks and carryforwards, not before them.

The foreign tax credit is limited to the lesser of (1) actual foreign taxes paid, or (2) the Section 904 limitation, which equals U.S. tax liability multiplied by (foreign-source income / worldwide income). The Section 904 limitation = $500,000 x ($200,000 / $1,000,000) = $500,000 x 20% = $100,000. Since actual foreign taxes paid ($80,000) are less than the Section 904 limitation ($100,000), the maximum credit is $80,000. Answer D is correct. Answer A ($60,000) does not match either the actual taxes paid or the limitation. Answer B ($120,000) exceeds both figures and is not applicable. Answer C ($100,000) represents the Section 904 ceiling but ignores that actual taxes paid cap the credit below that ceiling.

Under Section 47, the rehabilitation tax credit for certified historic structures is 20% of qualified rehabilitation expenditures. Applying 20% to $2,000,000 yields a credit of $400,000. Answer B ($200,000) would result from applying a 10% rate, which was eliminated by the Tax Cuts and Jobs Act for non-historic pre-1936 buildings. Answer C ($100,000) would result from applying a 5% rate, which is not a valid credit rate under Section 47. Answer D ($500,000) would result from applying 25%, which is not the correct statutory rate for the rehabilitation credit.

Under Section 45F, the employer-provided childcare credit equals 25% of qualified childcare facility expenditures plus 10% of qualified childcare resource and referral expenditures, with a maximum credit of $150,000 per year. Crane's credit = (25% x $60,000) + (10% x $10,000) = $15,000 + $1,000 = $16,000. Answer D is correct. Answer A ($15,000) reflects only the facility component (25% x $60,000), omitting the referral component. Answer B ($25,000) incorrectly applies 25% to the combined $70,000 total rather than using split rates. Answer C ($150,000) is the annual cap, not the computed credit.

The Section 38 limitation restricts the GBC to net income tax minus the greater of (1) tentative minimum tax (TMT) or (2) 25% of net regular tax above $25,000. Net income tax = regular tax = $180,000. Option 1: TMT = $155,000. Option 2: 25% x ($180,000 - $25,000) = 25% x $155,000 = $38,750. The greater of $155,000 and $38,750 is $155,000. Therefore, the maximum GBC = $180,000 - $155,000 = $25,000. Answer B ($155,000) is the TMT itself, not the limitation result. Answer C ($38,750) is the 25% computation, which is not the greater value in this case. Answer D ($60,000) is the full available credit, which exceeds the limitation.

Under Section 196, when a general business credit expires at the end of its 20-year carryforward period without being used, the corporation may deduct the expired credit in the taxable year of expiration. The deduction equals the unused credit amount (reduced by any amount the corporation would have saved from a corresponding basis increase). Answer B is correct. Answer A is incorrect; expired GBC is not refunded - it generates a deduction, not a cash payment. Answer C is incorrect because the deduction is taken in the expiration year itself (the final carryforward year), not the following year. Answer D is incorrect; the credit does not simply disappear - Section 196 preserves a partial benefit through a deduction in the expiration year.

When the $50,000 credit is claimed, the research expense deduction must be reduced by $50,000. The lost deduction results in additional tax of $50,000 x 21% = $10,500. The net benefit of the credit = $50,000 credit - $10,500 lost deduction tax cost = $39,500. This compares favorably to a deduction alone, which would yield only $50,000 x 21% = $10,500 in tax savings. Answer B ($50,000) ignores the required reduction of the deduction. Answer C ($10,500) is the value of the lost deduction and also the value of taking only the deduction, not the net benefit of the credit. Answer D ($14,500) does not correspond to any standard computation in this analysis.

When a corporation claims a Section 179 deduction, the basis of the property is reduced for purposes of computing depreciation and any applicable investment-type credits. The taxpayer must reduce the credit basis by the Section 179 amount taken. This is consistent with the general rule that basis is reduced before computing investment tax credits. Answer B is incorrect because the Section 179 deduction does reduce the credit basis; it is not added back. Answer C is incorrect because Section 179 is available for vehicles and other listed property used in a trade or business, subject to applicable luxury auto limits and business-use percentage requirements. Answer D overstates the effect; the Section 179 deduction reduces the credit base but does not completely eliminate an investment-type credit unless the full cost is expensed.