You may be a dependent for your mother or grandparents. Dependency is tricky. If you are not providing more than half or your own support; housing, food, clothing, transportation, etc., then someone else is. At age 17, you could still be someone's Qualifying Child.
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.
