2020-07-01 | Carta Circular 4066The Head of the Department of Banking Operations and Payment Systems of the Central Bank of Brazil issued Circular Letter No. 4066 to publish the updated lists of financial institutions classified as Group A and Group B for the purpose of calculating reserve requirements on demand deposits. This regulation supersedes Circular Letter No. 3,999 of January 2, 2020, and establishes the specific composition of these groups as detailed in the attached annexes. The document takes effect on the date of its publication and serves as the official reference for determining which institutions fall under each regulatory category.