The search for effective tax economy for regulated service companies: Case study of the annex VI of the Simples Nacional 2015 in a company specialized in occupational health. Research, Society and Development, [S. l.], v. 10, n. 14, p. e314101422430, 2021. DOI: 10.33448/rsd-v10i14.22430. Disponível em: https://rsdjournal.org/rsd/article/view/22430. Acesso em: 5 dec. 2025.