My husband & I divorced in 2001 and originally shared the children and each claimed two of them on our taxes (our original agreement declared he would claim the boys). In 2003 I went back to court and have them all full time although he retained his joint-guardianship for decision making. The past few years I have filled out a form giving my permission for him to claim our youngest but have bigger financial needs coming up this year...do I have to fill this form out and allow him to claim our youngest son or can I claim him this year? I live in Colorado and he lives in Wisconsin.