Final answer:
The alternative minimum taxable income for Donna Nichols before the AMT exemption would be $97,500.
Step-by-step explanation:
In order to calculate the alternative minimum taxable income, we need to start with the taxable income and add back any adjustments or preferences. For Donna Nichols, her taxable income is $60,000. However, in order to calculate her alternative minimum taxable income, we need to add back certain deductions and preferences. These adjustments include adding back the home mortgage interest on loan to acquire residence ($25,000), charitable contributions ($5,000), state and local income taxes ($4,500), and gambling losses ($3,000). Therefore, the total amount reported by Donna on her current year income tax return as alternative minimum taxable income before the AMT exemption would be $60,000 + $25,000 + $5,000 + $4,500 + $3,000 = $97,500.