Phaseout Begins at Ends at Status Exemption Married, joint Single or head of household Married, separate $114,600 73,600 57,300 $1,047,200 523,600 523,600 $1,505,600 818,000 752,800 Use the following data to calculate Chiara's AMT base in 2021: Taxable income $248,000 Positive AMT adjustments 73,000 Negative AMT adjustments 25,000 AMT preferences 30,000 Chiara will file as a single taxpayer and chooses to itemize her deductions. Click here to access the exemption table. Chiara's taxable income $248,000 Plus or minus: Positive adjustments Negative adjustments Plus: AMT preferences Equals: AMTI Less: AMT exemption !! Equals: AMT base