NZ doesn’t seem to have e-gov either :D most is forms over post. That said I’ve never had to go to an institution here over 6 years I’m here.

Edit: yes NZ has RealMe but there isn’t much use for it (in my xp).

Most WINZ/StudyLink and IRD interactions are online now, and I got my passport 100% online using RealMe. I can't remember the last time I posted anything to government in NZ.

I've had a ton of paperwork done in recent years (voting, child passport, visas). Most of the conveniences stops when you don't have NZ's drivers licence...

p.s. IRD has it's own login system.

Check the IRD login page - there's a RealMe button ;)