This article discusses compliance with Section 501(r) requirements for charitable hospitals. It provides an overview of the four main 501(r) requirements: conducting a community health needs assessment and adopting an implementation strategy every three years; establishing written financial assistance and emergency medical care policies; limiting charges for individuals eligible for financial assistance; and making reasonable efforts to determine FAP eligibility before collection actions. It emphasizes that hospitals must comply with final 501(r) Treasury Regulations for tax years after December 29, 2015. It also provides practical compliance tips for hospitals, such as defining service communities and collaborating with other organizations.