Decision-making, the process of selecting a belief or course of action from multiple alternatives, is crucial for everyday functioning. Adults with autism spectrum disorder (ASD) can demonstrate altered decision-making across various contexts, which can significantly impact their economic and social functioning. Improving our understanding of this issue holds promise for developing practical interventions aimed at enhancing the quality of life of individuals with ASD. Recent years saw significant growth in studies applying behavioral economics and neuroeconomics to evaluate behavioral issues observed in patients with psychiatric disorders. These findings are gradually improving our ability to diagnose and treat various psychiatric disorders. This chapter reviews the recent literature on decision-making among individuals with ASD using behavioral economics and neuroeconomics approaches, including the framing effect, risk/ambiguity aversion, temporal discounting, sunk cost effect, and intergroup bias. We discuss the practical implications of these studies’ findings.