The Halloween & Costume Association (HCA) (formally the Halloween Industry Association) was formally incorporated in 2005 as a 501(c)(6) trade organization to promote and build the celebration of Halloween in the United States. HCA represents businesses involved in the manufacture, importation, or distribution of Halloween products including costumes, decor, novelty items, and party supplies. HCA has grown to become the preeminent authority on Halloween and serves as a non-profit voice of the industry.