No, the contributions do not affect each other.
Note, however, that these are all nonrefundable credits, so once your assessed tax has been reduced to zero by various credits, additional credits will have no impact. If the contribution to one charity reduces your assessed tax to zero, then any nonrefundable credits for another charity will be lost.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
