Questione giuridica chiave
Whether the father's child maintenance contribution had to be recalculated by excluding the mother's surplus from the surplus split.
Decisione estratta
Yes. Only the father's remaining surplus after covering the child's unmet needs could be divided; the mother's own surplus was not to be redistributed.
Motivazione estratta
Where the custodial parent already provides substantial natural maintenance and earns income exceeding the level used for calculating childcare support, that parent's self-generated surplus must remain with that parent and may not be used to finance the non-custodial parent's bar support obligation.