Not completed, but close. Looking at 1040 Line 15 for taxable income. Line 16 is the tax ($3,800), which comes directly from Schedule D Tax. Schedule D Tax takes 1040 Line 15 ($108K) and subtracts $83,350 (mfj) = $25K. Tax is 15% of that = $3,800. If 1040 Line 15 had been less than $100K, the tax table would have been used (=$15K). This makes no sense.
