Im trying to claim my 2 kids on my taxes but some one else already claimed them we had a agreement to each claim for 6 months. But it's kicking my taxes back saying the dependents have already been used on someone else's income taxes but I've claimed them every year since they were born but this year I didn't have them all year so I gave my sister permission to claim them for the six months that she had them why won't I be able to claim them on my taxes because I had them for the first 6 months of the year
