Generally speaking, in order for you to claim the children, then they must reside with you for more than half of the year, must be under 19 years of age, must be of biological and/or legal relation to you, and must not have provided one-half of their own support. Even though you are receiving financial support for the children from your ex, the fact that the children live with you for more than half of the year (assuming that they do) allows you to claim them on your return.
Answered on Nov 14th, 2011 at 8:14 PM