“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 10, no. 14 (November 2, 2021): e314101422430. Accessed January 21, 2026. https://rsdjournal.org/rsd/article/view/22430.