A single taxpayer, age 45, is subject to the Alternative Minimum Tax (AMT). Their regular taxable income is $150,000. They have the following items: state income tax deduction of $8,000 (included in regular itemized deductions), ISO exercise bargain element of $20,000, and a standard deduction of $13,850. What is their Alternative Minimum Taxable Income (AMTI) before the AMT exemption?

Correct answer: C. $178,000

To calculate AMTI, we start with regular taxable income and add back or adjust for certain preference items and adjustments. 1. **Start with Regular Taxable Income:** $150,000. 2. **Add back State and Local Taxes:** The $8,000 state income tax deduction is not allowed for AMT purposes and must be added back. $150,000 + $8,000 = $158,000. 3. **Add back ISO Bargain Element:** The $20,000 bargain element from Incentive Stock Options (ISO) exercise is an AMT adjustment that must be added back. $158,000 + $20,000 = $178,000. (The standard deduction of $13,850 is not relevant here if the taxpayer itemized deductions, as implied by the 'included in regular itemized deductions' for state tax. If they took the standard deduction, the standard deduction itself would be added back, and the state income tax wouldn't have been deducted.)