Prosocial spending is associated with greater well-being than is personal spending. Given this link, well-being beliefs (e.g., whether well-being is viewed as eudaimonic or hedonic) may predict the degree to which people endorse prosocial spending relative to personal spending. We predicted that the endorsement of eudaimonic well-being beliefs and of incremental theories of well-being would be associated with prosocial spending and autonomous reasons for prosocial spending. Among a sample of 288 undergraduate students (and controlling for socially desirable responding), greater eudaimonic and lower hedonic well-being beliefs were associated with both an increased preference for prosocial spending and more autonomous reasons for such spending. The implications of the current research are discussed, including mechanisms by which well-being beliefs are or are not associated with prosocial spending.