An Australian Carbon Credit Unit (ACCU) is a unit created under the Australian Carbon Credit Units Act 2011 (Cth). Each unit represents one tonne of CO₂ equivalent stored or avoided and is registered in the Australian National Registry of Emissions Units (ANREU), administered by the Clean Energy Regulator.
ACCUs are not shares or managed investment scheme interests. They are statutory units created by Commonwealth legislation. Whether a particular transaction involving ACCUs constitutes dealing in a financial product under the Corporations Act 2001 (Cth) depends on the specific facts and circumstances — this is a legal question that has been subject to regulatory guidance and is evolving.