GST works differently for goods and some services
One tax thats different when you export is GST. You dont pay GST on exported goods or some exported services because exports are zero-rated supplies. But you still have to report the zero-rated GST in your GST return.
GST also works differently if your customer exports your goods within 28 days
You also dont pay GST if your customer exports your goods within 28 days, even if your customer is in New Zealand. Other conditions also need to be met. You still have to report the zero-rated GST in your GST return.
You may need to pay an import tax in the country youre exporting to.
You may have to pay excise duty
An excise duty is a tax on alcohol, fuel and tobacco products.
New Zealand Customs