Basic Standard Deduction Amounts Additional Standard Deduction Amounts Compute the taxable income for 2023 in each of the following independent situations. Click here to access the Exhibits 3.4 and 3.5 to use if required. a. Aaron and Michele, ages 40 and 41 , respectively, are married and file a joint return. In addition to four dependent children, they have AGI of $125,000 and itemized deductions of $29,000. b. Sybil, age 40, is single and supports her dependent parents who live with her, as well as her grandfather who is in a nursing home. She has AGI of $80,000 and itemized deductions of $8,000. c. Scott, age 49 , is a surviving spouse. His household includes two unmarried stepsons who qualify as his dependents, He has AGI of $76,800 and itemized deductions of $10,100