The Regulatory Flexibility Act (RFA), as amended by the Small Business Regulatory Enforcement Fairness Act (SBREFA) -- which is commonly referred to simply as the RFA – provides small entities with an expanded opportunity to participate in the development of certain regulations. The RFA defines "small entity" as a small business, small organization, or small governmental jurisdiction. Use the resources on this website to learn more about how EPA involves small entities in rulemakings that are likely to impact them.