GA plays a range of essential roles in Australia including servicing regional communities, delivering education and health services, regional freight and transport, tourism, recreation, agricultural mustering and spraying, instructional flying, sport and pleasure flying, and emergency services. However, GA is not a stand-alone category in Australia’s System of National Accounts. Instead it makes up a small subset of a very wide range of economic activities, making it difficult to estimate its actual economic impact. This study considers a range of sources, including innovative methods of matching aircraft registrations to business activity, to estimate the contribution of GA to Australia’s economy.