Source: Board of Governors of the Federal Reserve System (US)  

Release: H.15 Selected Interest Rates  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Daily

Rate posted by a majority of top 25 (by assets in domestic offices) insured U.S.-chartered commercial banks. Prime is one of several base rates used by banks to price short-term business loans.

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Source: Board of Governors of the Federal Reserve System (US)  

Release: FOMC Press Release  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Daily, 7-Day

This series represents upper limit of the federal funds target range established by the Federal Open Market Committee. The data updated each day is the data effective as of that day.

Source: Board of Governors of the Federal Reserve System (US)  

Release: FOMC Press Release  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Daily, 7-Day

Data for the period prior to 1994 come from the working paper "A New Federal Funds Rate Target Series: September 27, 1982 - December 31, 1993" (Thornton, Federal Reserve Bank of St. Louis, 2005, http://research.stlouisfed.org/wp/2005/2005-032.pdf). Due to an error in the paper values from April 2, 1986 - April 20, 1986 were adjusted manually to 7.3125%. Data from 1994 to the present are derived from FOMC meeting transcripts and FOMC meeting statements, http://www.federalreserve.gov/fomc/.

Effective December 16, 2008, target rate is reported as a range. Current data at https://fred.stlouisfed.org/series/DFEDTARU and https://fred.stlouisfed.org/series/DFEDTARL