Your tax liability on Line 16 of the Form 1040 will be calculated using the Qualified Dividends and Capital Gain Tax Worksheet for the amount of taxable income on Line 15 of the Form 1040.
IRS Form 1040 Instructions QDCG Worksheet page 36 - https://www.irs.gov/pub/irs-pdf/i1040gi.pdf#page=36
This assumes the holding period for the stock sale was long term.
