Custody; create rebuttable presumption of joint custody with equal parenting time.

SB 2484 creates a default rule in Mississippi that joint custody with equal parenting time is presumed to be in a child's best interest for all custody cases. Courts can override this presumption only if presented with a preponderance of evidence (more than 50% proof), and must document their reasoning for deviating. The bill also specifies a child support calculation method for joint custody cases and requires courts to document deviations unless both parents agree to a different arrangement. It includes a key exception: a rebuttable presumption against joint custody if a parent has a history of family violence, which must be documented with written findings. This bill directly affects parents and courts in Mississippi custody disputes, changing how custody decisions are made and calculated.