Revenue Minister Peter Dunne says work is underway to reform the child support system despite what he calls frustrating delays.
The Cabinet deferred proposed changes last year because of other commitments.
Mr Dunne has described the child support system as unfair and inflexible, because it's based on income rather than the cost of raising a child.
He says he hopes to take refined proposals back for Cabinet discussion following the release of a report by the Auditor General on child support debt.
The Union of Fathers, a national support group for separated families, says Mr Dunne has been promising reform since he became Revenue Minister seven years ago.