Answer:
(a) His AGI is $103,300.
$2,000 since only one of your daughters qualifies for the child tax credit (must be under 17 at year end).
(b) His AGI is $426,200.
$2,000 - (27 x $50) = $2,000 - $1,350 = $650
For 2018, the income threshold to qualify for the child tax credit increased to $400,000, and it starts to fade away up to $440,000. It phases out $50 per each $1,000 of additional AGI.
(c) His AGI is $428,900, and his daughters are ages 10 and 12.
($2,000 x 2 children) - (29 x $50 x 2 children) = $4,000 - $2,900 = $1,100
