Get your taxes done using TurboTax

My wife is trying to apply for a https://studentaid.ed.gov/sa/fafsa fafsa student aid, in that while filling online ,theres a questions saying

Enter the amount of your(and your spouse's) income tax of 2018.This is the total amount of IRS Form 1040

line 13 minus schedule 2-line 46

so we are not sure what to enter