Many autistic adults are likely to experience poor financial wellbeing and hardship due to unemployment and under-employment. Research in the general population demonstrates that subjective financial wellbeing--how people perceive their financial situation--influences quality of life. There is no research, however, examining the subjective financial wellbeing of autistic people. This study therefore aimed to (1) understand the subjective financial wellbeing of a sample of autistic adults living in Australia compared to a general Australian population sample and (2) identify the predictors of subjective financial wellbeing in this sample of autistic adults. To this end, 191 autistic adults aged 18-83 years (mean = 39.28, standard deviation = 11.74) completed an online survey about their economic status, financial wellbeing, financial behaviors, confidence in money management skills, and anxiety and depression symptoms. Almost half of our sample felt it was a struggle to make ends meet, whereas only one-third of the general Australian population felt this way. Similar to the general population, autistic people's income and their financial behaviors (specifically, saving and not borrowing for everyday expenses) predicted their sense of financial wellbeing. Our findings have implications for both research and practice.