If you need to make a change, but your return has already been filed and accepted, see
here:
If you answer "yes" to all the following questions, you can claim a qualifying child as a dependent:
- Are they a U.S. citizen, U.S resident, U.S national, or a resident of Canada or Mexico?
- You can't claim someone who is married and files a joint return with their spouse, takes a personal exemption for themselves or claims another dependent on their own tax forms. Are you the only person claiming this dependent?
- Are they your son, daughter, eligible foster child, brother, sister, half brother, half sister, stepbrother, stepsister, adopted child or an offspring of any of them?
- Are they under age 19 or, if a full-time student, under 24? (No age limit for disabled children)
- Did you provide more than half of their financial support?
- Did they live with you for more than half the year?
Exceptions may apply. If you don't see your situation addressed or want to learn more about a question, a comprehensive guide to claiming a dependent can be found here. You can also refer to IRS Publication 501.
