Dependents - aging out

Your child is too old to be a qualifying child dependent.   If they had less than $5050 of income--not counting any Social Security-- and you paid for over half their support, the child might still be a qualifying relative dependent.   If they had more than $5050 of income, no one can claim them as a dependent.

Qualifying relative

• They don't have to be related to you (despite the name).
• They aren't claimed as a dependent by someone else.
• They're a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.
• They aren’t filing a joint return with their spouse.
• They lived with you the entire year (exceptions apply).
• They made less than $5050 in 2024 (not counting Social Security)
• You provided more than half of their financial support

It depends. She must not be paying more than half of her own support and she must meet the other qualifications.

Qualifying child:

• They're related to you.
• They aren't claimed as a dependent by someone else.
• They're a US citizen, resident alien, national, or a Canadian or Mexican resident.
• They aren’t filing a joint return with their spouse.
• They're under the age of 19 (or 24 for full-time students).
  • There's no age limit for permanently and totally disabled children.
• They lived with you for more than half the year (exceptions apply).
• They didn't provide more than half of their own support for the year.

Who can I claim as my dependent? See here for more information. Be sure to answer all the questions in your tax return.