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  • Reliability

    Our estimate of the fuel excise tax gap has been assessed by an independent expert panel. Based on advice from the panel, the reliability rating for this tax gap estimate is medium (with a score of 20).

    The main data source is an external survey of large scale petroleum and diesel producers. Small producers are not covered through this survey. Their market share is negligible given the low number of overall participants in the fuel industry.

    Our activities confirm high levels of compliance overall. However, assumptions around the volumetric calculations may have an impact. Although there are some reservations about the data, the methodology employed is robust.

    Figure 3: Reliability rating scale from very low to very high – fuel excise tax gap

    Figure 3: This image is a graphical representation of the reliability rating for the current Fuel excise gap estimate. It graphically represents a rating of medium, which is a score between 16 and 20. The maximum score is 30.

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      Last modified: 11 May 2022QC 69517