interesting article, page-6

From the NZ Ministry of Econmic Development Site


Petroleum royalty regime
New Zealand has developed an internationally competitive royalty regime stipulating the payment of either an ad valorem royalty (AVR) or an accounting profits royalty (APR), whichever is the greater in any given year.

The royalty rates are either:


5% AVR, that is 5% of the net revenues obtained from the sale of petroleum, or
20% APR, that is 20% of the accounting profit of petroleum production.