NOTE: THIS DATA FILE WILL CHANGE! To improve accessibility of data for all users, we will convert this file from a text format to an html table by the end of June 2024. Title: 4-Week Treasury Bill Secondary Market Rate, Discount Basis Series ID: TB4WK Source: Board of Governors of the Federal Reserve System (US) Release: H.15 Selected Interest Rates Seasonal Adjustment: Not Seasonally Adjusted Frequency: Monthly Units: Percent Date Range: 2001-07-01 to 2024-04-01 Last Updated: 2024-05-01 3:18 PM CDT Notes: Averages of business days. Discount basis. DATE VALUE 2001-07-01 3.61 2001-08-01 3.48 2001-09-01 2.63 2001-10-01 2.24 2001-11-01 1.96 2001-12-01 1.69 2002-01-01 1.65 2002-02-01 1.70 2002-03-01 1.75 2002-04-01 1.69 2002-05-01 1.71 2002-06-01 1.68 2002-07-01 1.69 2002-08-01 1.66 2002-09-01 1.65 2002-10-01 1.60 2002-11-01 1.24 2002-12-01 1.18 2003-01-01 1.15 2003-02-01 1.18 2003-03-01 1.16 2003-04-01 1.14 2003-05-01 1.06 2003-06-01 0.96 2003-07-01 0.88 2003-08-01 0.93 2003-09-01 0.89 2003-10-01 0.89 2003-11-01 0.92 2003-12-01 0.87 2004-01-01 0.83 2004-02-01 0.90 2004-03-01 0.95 2004-04-01 0.89 2004-05-01 0.89 2004-06-01 1.02 2004-07-01 1.16 2004-08-01 1.35 2004-09-01 1.52 2004-10-01 1.60 2004-11-01 1.88 2004-12-01 1.92 2005-01-01 1.99 2005-02-01 2.32 2005-03-01 2.60 2005-04-01 2.59 2005-05-01 2.59 2005-06-01 2.78 2005-07-01 3.04 2005-08-01 3.28 2005-09-01 3.16 2005-10-01 3.44 2005-11-01 3.84 2005-12-01 3.61 2006-01-01 4.03 2006-02-01 4.31 2006-03-01 4.47 2006-04-01 4.52 2006-05-01 4.61 2006-06-01 4.62 2006-07-01 4.80 2006-08-01 5.08 2006-09-01 4.68 2006-10-01 4.88 2006-11-01 5.13 2006-12-01 4.78 2007-01-01 4.84 2007-02-01 5.09 2007-03-01 5.11 2007-04-01 4.89 2007-05-01 4.72 2007-06-01 4.42 2007-07-01 4.71 2007-08-01 4.11 2007-09-01 3.70 2007-10-01 3.72 2007-11-01 3.63 2007-12-01 2.79 2008-01-01 2.68 2008-02-01 2.23 2008-03-01 1.34 2008-04-01 1.04 2008-05-01 1.73 2008-06-01 1.69 2008-07-01 1.58 2008-08-01 1.65 2008-09-01 0.86 2008-10-01 0.26 2008-11-01 0.09 2008-12-01 0.03 2009-01-01 0.05 2009-02-01 0.22 2009-03-01 0.10 2009-04-01 0.09 2009-05-01 0.14 2009-06-01 0.10 2009-07-01 0.15 2009-08-01 0.12 2009-09-01 0.06 2009-10-01 0.04 2009-11-01 0.05 2009-12-01 0.03 2010-01-01 0.02 2010-02-01 0.06 2010-03-01 0.11 2010-04-01 0.15 2010-05-01 0.15 2010-06-01 0.08 2010-07-01 0.16 2010-08-01 0.15 2010-09-01 0.12 2010-10-01 0.14 2010-11-01 0.13 2010-12-01 0.08 2011-01-01 0.14 2011-02-01 0.11 2011-03-01 0.06 2011-04-01 0.03 2011-05-01 0.02 2011-06-01 0.02 2011-07-01 0.04 2011-08-01 0.02 2011-09-01 0.00 2011-10-01 0.01 2011-11-01 0.01 2011-12-01 0.00 2012-01-01 0.02 2012-02-01 0.06 2012-03-01 0.06 2012-04-01 0.07 2012-05-01 0.07 2012-06-01 0.05 2012-07-01 0.07 2012-08-01 0.09 2012-09-01 0.07 2012-10-01 0.11 2012-11-01 0.13 2012-12-01 0.04 2013-01-01 0.05 2013-02-01 0.08 2013-03-01 0.08 2013-04-01 0.05 2013-05-01 0.02 2013-06-01 0.03 2013-07-01 0.02 2013-08-01 0.04 2013-09-01 0.02 2013-10-01 0.11 2013-11-01 0.05 2013-12-01 0.02 2014-01-01 0.02 2014-02-01 0.05 2014-03-01 0.05 2014-04-01 0.02 2014-05-01 0.03 2014-06-01 0.02 2014-07-01 0.02 2014-08-01 0.03 2014-09-01 0.01 2014-10-01 0.02 2014-11-01 0.04 2014-12-01 0.03 2015-01-01 0.02 2015-02-01 0.02 2015-03-01 0.02 2015-04-01 0.02 2015-05-01 0.01 2015-06-01 0.00 2015-07-01 0.03 2015-08-01 0.03 2015-09-01 0.00 2015-10-01 0.01 2015-11-01 0.07 2015-12-01 0.17 2016-01-01 0.22 2016-02-01 0.25 2016-03-01 0.25 2016-04-01 0.19 2016-05-01 0.22 2016-06-01 0.22 2016-07-01 0.26 2016-08-01 0.26 2016-09-01 0.18 2016-10-01 0.24 2016-11-01 0.29 2016-12-01 0.41 2017-01-01 0.49 2017-02-01 0.47 2017-03-01 0.65 2017-04-01 0.73 2017-05-01 0.71 2017-06-01 0.82 2017-07-01 0.95 2017-08-01 0.96 2017-09-01 0.98 2017-10-01 0.98 2017-11-01 1.07 2017-12-01 1.18 2018-01-01 1.27 2018-02-01 1.36 2018-03-01 1.61 2018-04-01 1.63 2018-05-01 1.67 2018-06-01 1.77 2018-07-01 1.86 2018-08-01 1.91 2018-09-01 2.00 2018-10-01 2.14 2018-11-01 2.19 2018-12-01 2.32 2019-01-01 2.36 2019-02-01 2.39 2019-03-01 2.41 2019-04-01 2.38 2019-05-01 2.36 2019-06-01 2.18 2019-07-01 2.11 2019-08-01 2.03 2019-09-01 1.95 2019-10-01 1.70 2019-11-01 1.55 2019-12-01 1.52 2020-01-01 1.50 2020-02-01 1.55 2020-03-01 0.36 2020-04-01 0.11 2020-05-01 0.10 2020-06-01 0.13 2020-07-01 0.11 2020-08-01 0.08 2020-09-01 0.09 2020-10-01 0.09 2020-11-01 0.09 2020-12-01 0.08 2021-01-01 0.08 2021-02-01 0.04 2021-03-01 0.02 2021-04-01 0.02 2021-05-01 0.01 2021-06-01 0.03 2021-07-01 0.05 2021-08-01 0.04 2021-09-01 0.05 2021-10-01 0.05 2021-11-01 0.07 2021-12-01 0.04 2022-01-01 0.05 2022-02-01 0.04 2022-03-01 0.17 2022-04-01 0.30 2022-05-01 0.56 2022-06-01 1.03 2022-07-01 1.80 2022-08-01 2.19 2022-09-01 2.52 2022-10-01 3.18 2022-11-01 3.72 2022-12-01 3.72 2023-01-01 4.33 2023-02-01 4.51 2023-03-01 4.33 2023-04-01 4.02 2023-05-01 5.31 2023-06-01 5.04 2023-07-01 5.20 2023-08-01 5.28 2023-09-01 5.29 2023-10-01 5.30 2023-11-01 5.29 2023-12-01 5.27 2024-01-01 5.28 2024-02-01 5.28 2024-03-01 5.28 2024-04-01 5.28