Finance Minister Bill English shored up his chances of achieving a surplus in 2014/15 by deferring last Budget's costly KiwiSaver auto-enrolment plan, saving hundreds of millions of dollars.
The move is part of series of tweaks to the savings scheme which include new disclosure rules to make KiwiSaver fund performance more transparent.
In his Budget speech Mr English said auto-enrolment "is now not possible without putting the updated forecast surplus at risk".
"Therefore public consultation on auto-enrolment has been deferred until after 2012 and the policy won't be implemented until after 2014/2015."
Mr English said his Government made it clear when the plan was announced last year that it would not go ahead unless there were sufficient surpluses to pay for it".