For 1040 line 14. The 1040 line numbers changed between 2018 & 2019 so you need to look at the right year
2018 1040 https://www.irs.gov/pub/irs-prior/f1040--2018.pdf
2019 https://www.irs.gov/pub/irs-pdf/f1040.pdf
2019 line 14 is the Tax after credits
