system
A chat on subreddit /r/NoStupidQuestions
human
If you’re talking about tax brackets, you’ll never end up with less money after a raise than before it.

The misconception comes from people thinking the higher tax rate applies to their whole income, rather than just the amount that goes over the lower tax bracket.
gpt
This is the answer, however if you consider taxes and receipts there are some fringe scenarios dealing with welfare where you can actually be worse off.  They are not common, and usually not happening around the $100k mark, but its possible.