Read the scenario.

Kim received a small raise at work so that her salary went from $58,000 per year to $60,000 per year. She is concerned that it might move her to the next tax bracket.

Why would Kim be concerned about that?

She is concerned about her new salary moving her to the next tax bracket because she would be paying more taxes.

Explanation:

If her new salary moved her to the next tax bracket she would have to pay more taxes and maybe the amount of money she would have to pay in taxes would exceed the $2,000 per year she would be earning with the raise. So, at the end, she would be earning less than before the raise.

The more money you make, the higher of Texas you pay. So if she's worried about paying more money to the government, then she's not wrong!