Social Development Minister Paula Bennett said $206 million was being "reprioritised" out of her budget over the next four years - an average of $51.5 million a year - to pay for most of the $287.5 million that will be spent over that period on welfare reforms.
The bulk of the extra money in the coming year will go to companies and community agencies to help "at-risk" school leavers to find jobs or further training (a net $17 million extra), and to help teenage beneficiaries with their education, budgeting and parenting ($7.3 million) and childcare and contraception ($6.5 million).
Schools will get another $6.6 million for more social workers and youth workers, and Child, Youth and Family Services will get an extra $11.5 million for more social workers, mental health services and sharing information on vulnerable children with other agencies.
The shift reflects a new "investment" approach to save money by investing now in those at most risk of long-term welfare.
Officials have calculated that the average teenager who goes on a youth benefit before age 18 will cost taxpayers $113,000 in total welfare costs over the rest of their lives, and teen parents will cost an average of $250,000.
The Budget allocations still show continued increases in spending on the domestic purposes and sickness benefits over the next four years, apparently because the full changes that will move many sole parents and all sick people on to work-tested "jobseeker support" will not take effect until July next year.