The study identifies facilitators and barriers to adopting and implementing green purchasing policies in Czech municipalities. Based on the survey of 304 politicians and directors from the finance, acquisitions, general administration, municipal public services, and solid waste management departments across 6,254 municipalities, the results show only 33% of municipalities have implemented a green purchasing policy, and 58% of respondents consider this policy successful. The outcomes confirm the importance of complementary policies, goal setting, top management approaches, organizational capacity, and central government support in implementing green purchasing policies. At the same time, they highlight that green purchasing criteria are rather complementary, and the emphasis on the lowest price still prevails. Regarding complementary sustainability policies that can facilitate green purchasing policies, has been identified a relatively large implementation gap among respondents. An organizational culture that is not oriented toward innovation also offers the potential for improvement. Finally, the recommended actions for more effectively advancing green purchasing practices are brought.