@pradyiitm wrote:
there is a small qualified dividend. However, the qualified dividend should only reduce my tax and not increase
Since you have a qualified dividend then the program will use the Qualified Dividends and Capital Gains Worksheet to calculate your taxes.
IRS QD&CG Worksheet in the Form1040 instructions page 36 - https://www.irs.gov/pub/irs-pdf/i1040gi.pdf#page=36
Also, look at your Schedule 2 Line 3 and Line 21 for additional taxes
