Yes, you can claim your son even if your parents paid more of his financial expenses. Assuming that you can't be claimed as a dependent on your parent's return.
Qualifying child
- They're related to you.
- 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're under the age of 19 (or 24 for full-time students).
- 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.
[Edited 02/06/2024, 10:40 AM ,PST]
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