1) It phases in between something like $2500 of "earned" income to about 11,800 of earned income. So if your earned income is in this range the full credit isn't allowed.
2) if a child hits age 17 in 2018, then much of it is lost....only $500 is the credit then. (2x1400)= 500 = 3300
3) the "refundable" part is only 1,400. The 2000 gets applied to what taxes you owe first....if some remains, then you might get some back, but if your deductiosn result in zero tax assessed, the max you would get would be 1400x3=4200...plus perhaps your paycheck withholding, but it really depends on your total tax assessment
4) Hard to know if it's all working right yet. Print out your forms at the end of January and check again.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
