The IRD just like the NZTA, continues to be a favourite target in phishing campaigns. I guess that means they have some measure of success targeting users of these services otherwise they would not continue to carry them out.
This most recent campaign uses various subdomains of the newly registered myirdnz[.]com beginning with a human verification check.

Which then takes you to a page with no working links or menus except a form to take your personal details.

There is probably no more to say here other than feel free to educate your users that these NZ government themed phishing emails are still active.