The TaxAct® program will not always calculate all the possible preference items from the list on Form 6251 Alternative Minimum Tax—Individuals. Checking or unchecking certain boxes will affect the calculations on Form 6251.
To access Form 6251, go to our Form 6251 - Alternative Minimum Tax - AMT FAQ.
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.