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Calculating petroleum royalty

Petroleum is produced when it is released or recovered to ground level from a natural underground reservoir. Your petroleum royalty liability is based on the volume of liable petroleum produced in a return period.

The volume model is used for calculating royalty for petroleum produced from 1 October 2020. Under this model, you need to determine:

  • the total liable volume of petroleum produced during the period
  • the classification (e.g. domestic gas, supply gas, project gas or liquid petroleum)
  • the royalty rate that applies to each class of petroleum.

This guide explains the volume model, the rates that apply from 1 October 2020, transitional arrangements from the previous royalty model, and how to calculate royalty.


Office of State Revenue

  • Call 1300 300 734 (Australia) or
    +61 7 3179 2500 (overseas)
  • Send an email using our online enquiry form.