You have to count FICA.

https://smartasset.com/taxes/income-taxes#ETOQK0yg9H

Put in 168,100, SS tax highest income limit.  You'll get

for single status:  income tax + FICA = 42790  => 25.45% effective tax rate. 

for married filing jointly:  income tax + FICA = 33873=> 20.15%  effective tax rate.

top capital gain is 20% + NIIT 3.8%