Australia will continue to make strong contributions to global climate science and sharing our expertise, experiences and skills across the globe toward stronger adaptation and resilience outcomes.AUSTRALIAâS NATIONALLY DETERMINED CONTRIBUTION â COMMUNICATION 2021 Tables 1â3: Australiaâs Nationally Determined Contribution 1.1 Quantifiable information on reference point Target 26 to 28 per cent below 2005 levels by 2030, implemented as an emissions budget covering the period 2021â2030 Net zero emissions by 2050 1.1.1 Reference year or other starting point Emissions budget for the period 2021â2030 Australiaâs net emissions in the most recently available year, published in the annual National Inventory Report. 1.1.2 Quantifiable information on the reference indicators The indicative value of the emissions budget is -e, corresponding to the 28% target, as published in Australiaâs emissions projections 2021.