Solution :
a). The itemized deduction is given = $25,100
The standard deduction is = $24,400
The state income tax which needs to be added in year 2020 is the difference between the itemized deduction and the standard deduction, i.e.,
= $25,100 - $24,400
= $700
As per the tax benefit rule, the amount of 700 dollar will be included in the gross income of the year 2020.
b). In this case, the income tax of the State is higher as compared to the standard deduction in the year 2019. So here the answer is zero.