NZ passports will be valid for 10 years from November 30, subject to legislation passing in Parliament.

Passports valid for 10 years will be arriving earlier than expected, with Kiwis able to apply for them from November 30.

Internal Affairs Minister Peter Dunne announced on Monday that the Government Administration Select Committee had endorsed the proposed implementation date after considering public submissions.

Subject to legislation being passed by Parliament, the 10-year validity period of adult New Zealand passports would come into place at the end of November.

The longer validity of passports would give greater convenience to passport holders, as they would need to renew their travel documents less frequently, Dunne said.

The cost of the 10-year passport would be $180, which Dunne said would result in an average saving of $90 over the life of the passport. A five-year passport costs $135.

Children's passports would remain valid for five years, as their appearance could change significantly over time.

Dunne said with over 40 per cent of adult passport renewal applications already submitted online, the Government was looking to extend the service to child renewals and first-time adult applicants in the future.