The Climate Solution Fund (CSF)  is a voluntary offset program established by the Australian Government that provides new economic opportunities for farmers, forest growers and landholders. Formally known as the Emissions Reduction Fund (ERF) , the program aims to help the environment by reducing the levels of carbon pollution and greenhouse gas emissions in the atmosphere. 

Project holders can choose to bid into an auction system managed by the Clean Energy Regulator to sell Australian Carbon Credit Units (ACCUs) to secure income. The Climate Solutions Fund is used to pay for the purchase of ACCUs if a bid is accepted. ACCUs may be sold  to other buyers in the secondary (non-government) market that have a requirement to offset greenhouse gas emissions produced by their operations or who voluntarily choose to offset their emissions.

To be eligible to participate in an ERF/CSF project, it must be conducted according to an approved method. Note: Previously this program was known as the Carbon Farming Initiative (CFI), however as of July 1, 2015 it transitioned into the Emissions Reduction Fund (ERF) and in February 2019 renamed to the Climate Solution Fund (CSF)