Relation of 13Wk T-Bill Index and Fed Interest

Q

What Is the Relationship Between 13-Week Treasury Bill Index and US Fed Discount Interest Rates?

✍: FYIcenter.com

A

What Is the Relationship Between 13-Week Treasury Bill Index and US Fed Discount Interest Rates can be summarized as:

  • The 13-week Treasury Bill index is closely tied to the Federal Reserve's discount rate.
  • When Federal Reserve raises the discount interest rate, the 13-week Treasury Bill index will go up accordingly.
  • When Federal Reserve lowers the discount interest rate, the 13-week Treasury Bill index will go down accordingly.
Compare:
   13 WEEK TREASURY BILL
   Cboe Indices: ^IRX
   2026-03-09: 3.59299994 Percent
with:
   US Fed Discount Rate
   US: DISC
   2026-03-09: 3.75000000 Percent

          13 WEEK TREASURY BI  US Fed Discount Rat
                ^IRX  Growth%        DISC  Growth%
           ---------- -------   ---------- -------
2026-03-09       3.59  100.00         3.75  100.00
2026-03-06       3.57   99.36         3.75  100.00
2026-03-05       3.59   99.86         3.75  100.00
2026-03-04       3.60  100.06         3.75  100.00
2026-03-03       3.60  100.06         3.75  100.00
2026-03-02       3.59   99.92         3.75  100.00
2026-02-27       3.58   99.58         3.75  100.00
2026-02-26       3.59   99.86         3.75  100.00
2026-02-25       3.59   99.86         3.75  100.00
2026-02-24       3.59   99.86         3.75  100.00
2026-02-23       3.59   99.86         3.75  100.00
2026-02-20       3.60  100.06         3.75  100.00
2026-02-19       3.60  100.06         3.75  100.00
2026-02-18       3.60  100.28         3.75  100.00
2026-02-17       3.59  100.00         3.75  100.00
2026-02-13       3.59  100.00         3.75  100.00
2026-02-12       3.60  100.14         3.75  100.00
2026-02-11       3.60  100.19         3.75  100.00
2026-02-10       3.59   99.92         3.75  100.00
2026-02-09       3.59  100.00         3.75  100.00
2026-01-09       3.51   97.77         3.75  100.00
2025-12-09       3.63  101.09         4.00  106.67
2025-11-09       3.76  104.56         4.00  106.67
2025-10-09       3.85  107.24         4.25  113.33
2025-09-09       3.94  109.74         4.50  120.00
2025-08-09       4.13  115.03         4.50  120.00
2025-07-09       4.24  118.15         4.50  120.00
2025-06-09       4.24  118.01         4.50  120.00
2025-05-09       4.22  117.31         4.50  120.00
2025-04-09       4.23  117.67         4.50  120.00
2025-03-09       4.20  116.81         4.50  120.00
2024-03-09       5.20  144.81         5.50  146.67
2023-03-09       4.59  127.61         4.75  126.67
2022-03-09       0.49   13.72         0.25    6.67
2021-03-09       0.01    0.36         0.25    6.67
2020-03-09       0.03    0.83         1.75   46.67
2019-03-09       2.33   64.79         3.00   80.00
2018-03-09       1.67   46.48         2.00   53.33
2017-03-09       0.74   20.54         1.25   33.33
2016-03-09       0.19    5.37         1.00   26.67
2015-03-09       0.03    0.70         0.75   20.00
2014-03-09       0.03    0.78         0.75   20.00
2013-03-09       0.07    1.81         0.75   20.00
2012-03-09       0.07    1.81         0.75   20.00
2011-03-09       0.09    2.50         0.75   20.00
2010-03-09       0.15    4.17         0.75   20.00
2009-03-09       0.20    5.57         0.50   13.33
2008-03-09       1.27   35.49         3.50   93.33
2007-03-09       4.89  136.24         6.25  166.67
2006-03-09       4.51  125.66         5.50  146.67
2005-03-09       2.72   75.76         3.50   93.33
2004-03-09       0.92   25.69         2.00   53.33
2003-03-09       1.09   30.34         2.25   60.00
2002-03-09       1.74   48.43                     
2001-03-09       4.18  116.34                     
2000-03-09       5.72  159.20                     
1999-03-09       4.36  121.35                     
1998-03-09       4.99  138.88                     
1997-03-09       5.17  143.89                     
1996-03-09       5.00  139.16                     
1995-03-09       5.70  158.64                     
1994-03-09       3.47   96.58                     
1993-03-09       2.89   80.43                     
1992-03-09       4.05  112.72                     
1991-03-09       5.74  159.76                     
1990-03-09       7.80  217.09                     
1989-03-09       8.90  247.70                     
1988-03-09       5.71  158.92                     
1987-03-09       5.61  156.14                     
1986-03-09       6.34  176.45                     
1985-03-09       8.18  227.66                     
1985-01-01       8.18  227.66                     

 

Relation of 13Wk T-Bill Index and 30Yr Bond

Cboe Indices: ^TYX - Treasury Yield 30 Years

US Treasury Security Indices

⇑⇑ Market Indices

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