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
   2026-08-24: 3.70299983 Percent
with:
   US Fed Discount Rate
   US: DISC
   2026-08-24: 3.75000000 Percent

          13 WEEK TREASURY BI  US Fed Discount Rat
                ^IRX  Growth%        DISC  Growth%
           ---------- -------   ---------- -------
2026-08-24       3.70  100.00         3.75  100.00
2026-08-21       3.71  100.19         3.75  100.00
2026-08-20       3.70  100.00         3.75  100.00
2026-08-19       3.70   99.92         3.75  100.00
2026-08-18       3.70  100.05         3.75  100.00
2026-08-17       3.70  100.00         3.75  100.00
2026-08-14       3.70   99.84         3.75  100.00
2026-08-13       3.70  100.05         3.75  100.00
2026-08-12       3.71  100.11         3.75  100.00
2026-08-11       3.73  100.73         3.75  100.00
2026-08-10       3.72  100.41         3.75  100.00
2026-08-07       3.71  100.19         3.75  100.00
2026-08-06       3.73  100.78         3.75  100.00
2026-08-05       3.72  100.59         3.75  100.00
2026-08-04       3.73  100.73         3.75  100.00
2026-08-03       3.70   99.92         3.75  100.00
2026-07-31       3.68   99.43         3.75  100.00
2026-07-30       3.67   99.24         3.75  100.00
2026-07-29       3.66   98.78         3.75  100.00
2026-07-28       3.76  101.54         3.75  100.00
2026-07-27       3.80  102.54         3.75  100.00
2026-07-24       3.81  102.75         3.75  100.00
2026-06-24       3.69   99.65         3.75  100.00
2026-05-24       3.59   96.81         3.75  100.00
2026-04-24       3.59   97.03         3.75  100.00
2026-03-24       3.62   97.76         3.75  100.00
2026-02-24       3.59   96.89         3.75  100.00
2026-01-24       3.58   96.73         3.75  100.00
2025-12-24       3.56   96.00         3.75  100.00
2025-11-24       3.73  100.73         4.00  106.67
2025-10-24       3.76  101.62         4.25  113.33
2025-09-24       3.86  104.19         4.25  113.33
2025-08-24       4.09  110.40         4.50  120.00
2024-08-24       5.24  141.45         5.50  146.67
2023-08-24       5.30  143.13         5.50  146.67
2022-08-24       3.18   85.88         2.50   66.67
2021-08-24       0.03    0.76         0.25    6.67
2020-08-24       0.09    2.30         0.25    6.67
2019-08-24       1.77   47.80         2.75   73.33
2018-08-24       2.15   58.06         2.50   66.67
2017-08-24       1.03   27.76         1.75   46.67
2016-08-24       0.26    7.02         1.00   26.67
2015-08-24       0.01    0.14         0.75   20.00
2014-08-24       0.01    0.35         0.75   20.00
2013-08-24       0.01    0.14         0.75   20.00
2012-08-24       0.09    2.43         0.75   20.00
2011-08-24       0.01    0.27         0.75   20.00
2010-08-24       0.16    4.19         0.75   20.00
2009-08-24       0.12    3.11         0.50   13.33
2008-08-24       0.90   24.30         2.25   60.00
2007-08-24       3.70   99.92         5.75  153.33
2006-08-24       4.76  128.54         6.25  166.67
2005-08-24       3.47   93.71         4.50  120.00
2004-08-24       1.67   45.21         2.50   66.67
2003-08-24       0.93   25.01         2.00   53.33
2002-08-24       1.53   41.24                     
2001-08-24       2.30   62.11                     
2000-08-24       6.03  162.84                     
1999-08-24       4.71  127.19                     
1998-08-24       4.25  114.77                     
1997-08-24       4.97  134.22                     
1996-08-24       4.91  132.60                     
1995-08-24       5.24  141.51                     
1994-08-24       4.67  126.11                     
1993-08-24       2.92   78.85                     
1992-08-24       2.69   72.64                     
1991-08-24       5.11  138.00                     
1990-08-24       7.14  192.82                     
1989-08-24       7.91  213.61                     
1988-08-24       7.25  195.79                     
1987-08-24       6.61  178.50                     
1986-08-24       5.20  140.43                     
1985-08-24       7.04  190.12                     
1985-01-01       8.18  220.90                     

 

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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