JohnB5677
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These are the IRS rules for claiming a dependent.

He may qualify as a Qualifying Child; however, if he isn't a Qualifying Child, he could be a Qualifying Relative.  

DoninGA asked very good questions.

These rules generally apply to all dependents:

  • A dependent must be a U.S. citizen, resident alien or national or a resident of Canada or Mexico
  • A person can't be claimed as a dependent on more than one tax return, with rare exceptions
  • A dependent can't claim a dependent on their own tax return
  • You can't claim your spouse as a dependent if you file jointly
  • A dependent must be a qualifying child or qualifying relative

Qualifying child

To qualify as a dependent, a child must also pass these tests:

  • Relationship
    • Be your son, daughter, stepchild, eligible foster child, brother, sister, half-sister or -brother, stepbrother, stepsister, adopted child or the child of one of these
  • Age: 
    • Be under age 19 or under 24 if a full-time student, or any age if permanently and totally disabled
  • Residency
    • Live with you for more than half the year, with some exceptions
  • Support: 
    • Get more than half of their financial support from you
  • Joint return
    • Not file as married filing jointly unless only to claim a refund of taxes paid or withheld

Qualifying relative

A qualifying relative must meet the general rules for dependents and pass these tests:

Guidelines were taken from IRS publication Dependents

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