In year 1, GSL Corp.'s alternative minimum tax base was $2,000,000 and its regular tax liability is $350,000.
a. What is GSL's total tax liability for years 1, 2, 3, and 4 (by year) assuming the following?
- Year 2: AMT base $600,000; Regular tax liability $100,000.
- Year 3: AMT base $500,000; Regular tax liability $160,000.
- Year 4: AMT base $1,000,000; Regular tax liability $150,000.
b. What, if any, minimum tax credit does GSL have at the end of year 4?