If your 19 year old is not a full-time student and if he earned more than $5200 in 2025 --not outing any Social Security--- he cannot br claimed as anyone else's dependent. If he was a student, you can claim him as a dependent and get the non-refundable $500 credit for other dependents.
IRS interview to help determine who can be claimed:
https://www.irs.gov/help/ita/who-can-i-claim-as-a-dependent
Are you sure you have a W-2? Does it show amounts withheld for Social Security and Medicare? Or do you have something else---like a 1099NEC?
https://turbotax.intuit.com/tax-tips/irs-tax-forms/what-is-a-w-2-form/L6VJbqWl5
@user17700594508
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
