The cost of the 2023 Australian Indigenous Voice referendum was estimated to be about $450 million by the Australian Electoral Commission (AEC) . The federal government had supplied $364 million in the most recent budget to deliver the referendum. The funding for the referendum was provided to the AEC and National Indigenous Australians Agency in the October 2022 Australian federal budget, with a total distribution of $75.2 million (excluding Contingency Reserves) over two years (FY2022–24) . The breakdown of the funding is as follows:

• $52.6 million for the Australian Electoral Commission to prepare for and deliver the referendum
• $16.1 million for the Australian Electoral Commission to increase the percentage of eligible First Nations people enrolled to vote
• $6.5 million for the National Indigenous Australians Agency to support "neutral public civics education and awareness activities"

It is important to note that the cost of a referendum can vary depending on the type of referendum, the number of signatures required, and other factors.