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A. For purposes of determining child support, shared custody is defined as a parent's visiting with the child for 123 or more overnights a year. Shared custody will result in a different amount of child support than in a sole custody situation.
Primary custody is generally defined as belonging to the parent with whom the child or children reside with the majority of the time. It does not mean that it cannot be a joint custody arrangement as well. 1 person found this useful.