Deductions & credits

If she is under age 19, or is under age 24 while being a full-time student, the relevant test is "did she provide more than half her own support?"  If yes, she can't be claimed as a dependent.  

 

If she is 24 or older, or 19 or older and not a full time student, the relevant tests for 2023 are, "did you provide more than half her own support?" and "does she have less than $4700 of total taxable income?"   If the answer to either question is no, you can't claim her this year.  

 

Most of the time, students are considered to live "at home" even if they are away at college, and the amounts of income students usually earn are not enough to stop them being claimed as dependents, although every case needs to be evaluated on its own facts.