Total reserve balances maintained is the amount of balances institutions hold in accounts at Federal Reserve Banks that are available to satisfy reserve requirements. Historically, this series excluded balances held in a reserve account for contractual clearing purposes (contractual clearing balances program has been discontinued on July 12, 2012).
Board of Governors of the Federal Reserve System (US), Total Reserve Balances Maintained with Federal Reserve Banks [RESBALNS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/RESBALNS, January 22, 2020.
Release: H.4.1 Factors Affecting Reserve Balances (data not included in press release)
Data prior to 1991 are from various issues of Banking and Monetary Statistics and the Annual Statistical Digest. Data from 1991 forward are calculated using data from the H.4.1 Release - Factors Affecting Reserve Balances.
As of March 1, 2019, this series is calculated as a monthly average of fred.stlouisfed.org/series/WCURCIR.
Board of Governors of the Federal Reserve System (US), Currency in Circulation [CURRCIR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CURRCIR, January 22, 2020.