For more information on the changes, exemptions, and how businesses can register for GST, visit the Inland Revenue website: https://www.classic.ird.govt.nz/campaigns/2018/gst-policy-update.html
You can also contact the Inland Revenue via email at info.lvg@ird.govt.nz or directly on +64 4 8903056 between 8.00am to 4.30pm (New Zealand time), Monday to Friday.