Children that were under 19 at the end of 2020 (24 if they attended school full time for at least part of five calendar months of the year) must have lived with you (your parents) for more than half of the year (temporary absences, such as time away at college count as living at ''home'') to be claimed. There are special rules for children of divorced or separated parents and for persons receiving support from two or more individuals. Since you have already filed a tax return claiming yourself, their return will be rejected if they e-file with you on their return. The link below lists the requirements they need to meet in order to claim you.
Who can I claim as my dependent?
If you provided over half of your own support for the year, they can't claim you.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
