Marco and Tatiana are married and file separate returns for 2021. Tatiana itemizes her deductions on her return. Marco's adjusted gross income was $18,000, his itemized deductions were $2,400. Neither have any dependents. Calculate Marco's income tax liability assuming the couple does not live in a community property state.

Their 2021 EIP was equal to the 2021 RRC.

c. What is the amount of their taxable income? a. What is the amount of their adjusted gross income? b. In order to minimize taxable income, Diego and Dolores will t in the amount of $ d. What is their tax liability for 2021 ? $x