Financial services are mainly regulated by Law 4,595/64 (which sets forth the rules applicable to banking, monetary and credit institutions and created the CMN), Law 4,728/65 (which regulates the capital markets and established measures for its development), and Law 6,385/76 (which further regulates the capital markets and created the CVM).

Several other statutory laws regulate specific services, products and other banking, finance and capital markets activities. The CMN and CVM are competent to issue intralegal  regulations, and in this regard, there is also a large volume of secondary and delegated intralegal regulations (e.g., resolutions, instructions and other normative instruments).