The new settings will begin from 11.59pm on 18 April.
Ardern said the position New Zealand found itself in had still come at a cost.
Cabinet has been meeting today to decide the date the two-way quarantine-free travel will start. Prime Minister Jacinda Ardern promised last month to announce on 6 April when the bubble could begin operating.
She today said airlines had not been given any forewarning about when a bubble with Australia would be opened.
Ardern had previously said the government had carefully worked through the framework of a trans-Tasman bubble.