b. He is married and files a separate return. Amount of AMT exemption c. His filing status is single. Amount of AMT exemption d. His filing status is head of household. Amount of AMT exemption EXHIBIT 8-5 2021 AMT Exemptions Filing Status Exemption Phase-Out Begins at This Level of AMTI Married filing jointly Married filing separately Head of household and single $114,600 57,300 73,600 $1,047,200 523,600 523,600 Phase-Out Complete for This Level of AMTI $1,505,600 752,800 818,000 Required information [The following information applies to the questions displayed below.) Corbett's AMTI is $600,000. What is his AMT exemption under the following alternative circumstances? Exhibit 8-5. a. He is married and files a joint return. Amount of AMT exemption