<prompt> Human: My fiance currently makes 35k, but after his annual review he received a 3k raise. I was told by a co-worker that the 15 tax bracket ends at 35.6k, and that his raise would bump him up into the 25 bracket. She said this would actually cause his paychecks to go down instead of up, and that he should either turn down the raise or we should just hurry and get married.Is that really how tax brackets work? And if so, does it take effect immediately, or after his next time filing? Were trying to figure out what to do in this situation, but all I find online when searching for tax bracket information are just charts of the different brackets.Any help is appreciated :  <response>: Your co-worker is an idiot. Go out and celebrate the raise! 