You can find a tax adviser through:
Accounting and Finance Association of Australia and New Zealand
New Zealand Institute of Chartered Accountants
If you have a company to help you relocate, they should be able to provide you with the names of some reliable New Zealand tax advisors. Make sure you choose a professional who has experience dealing with tax issues both in New Zealand and in your home country, so they are aware of any tax complexities or hidden issues in dealing with your own situation. Your local embassy or consulate may also be able to assist you in finding a tax specialist who deals in expat tax issues.
You can access all New Zealand government tax information, including business and individual tax questions, at the Inland Revenue website at http://www.ird.govt.nz.
There, you’ll find a complete list of phone numbers/help lines at http://www.ird.govt.nz/contact-us/phone – including specific phone numbers for overseas callers.
The New Zealand government also offers an interpreter service for those who speak another language. 44 languages are currently offered by this service – you can find a complete list at http://www.languageline.govt.nz/oeawebsite.nsf/wpg_url/Language-Line-Languages-Available-Index.