As a challenge of the traditional (neoclassical) approach of human behavior, Behavioral Economics have obtained increasing acceptance for some time. This is also true for economic research in the field of Public Finance, whereat, however, the results of given works in economic psychology on cognitive heuristics, illusions and biases with respect to human information processing, judgment und choice were primarily applied so far to the analysis of tax and debt salience, tax compliance, tax evasion or tax equity. In contrast, comparable examinations of public expenditures are not very common up to now. Against this background, the paper gives a review regarding the existing behavioral economic research on public expenditure policy.