This is not a yes or no question! To claim your child, she must either be considered a Qualified Child or Qualified Relative.
For Qualifying Child, generally, you can claim your child who is over age 19 on 12/31 if the child is a student, lived with you for more than half the year, did not provide for more than half of her own support and she is not filing a joint return (you indicated she was filing her own taxes). Note that a student for tax purposes is one who attended full time (the school's definition of full time) for part of at least 5 months (don’t have to be consecutive) of the tax year.
So, if your daughter graduated in May (assuming she attended school full time during part of 5 months of the year) and she meets all the other tests, she'd probably still qualify – regardless of how much she earned at work.
If she does not meet one of the above tests she may still be claimed as a Qualifying Relative if she lived with you as a member of your household all year or is related to you in one of the ways listed in IRS publication 501 (https://www.irs.gov/publications/p501#en_US_2023_publink1000220957),
does not have gross income of more than $4700 ($5050 for 2024) AND you provided for more than half of her support.
As you can see, your question does not resolve all the issues raised by the various IRS tests for dependency so I cannot say for sure if she can be claimed as your dependent. On top of that, most of the terms mentioned have special meanings for tax purposes (ie if your child was away at school, that my still count as having resided with you; there are special situations for children of divorced/separated parents, age does not matter if child permanently disabled, etc.).
In addition to IRS publication 501 referenced above, here is a TurboTax article regarding dependents that will help you out:
https://turbotax.intuit.com/tax-tips/family/rules-for-claiming-a-dependent-on-your-tax-return/L8LODb...
Also, the IRS has a great tool where you can answer questions and it will let you know who qualifies as your dependent. It can be found here:
https://www.irs.gov/help/ita/whom-may-i-claim-as-a-dependent
Remember, since you stated that she filed her own taxes (or will be filing her own taxes), if you do end up claiming her, she will have to indicate on her return that she may be claimed as a dependent on someone else's return. If she does not indicate that and you claim her, your return will be rejected because she will have filed her own individual return without stating that she may be claimed as a dependent by someone else.
Hope this helps.
Susan
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