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
   2026-08-28: 3.67499995 Percent
with:
   US Fed Discount Rate
   US: DISC
   2026-08-28: 3.75000000 Percent

          13 WEEK TREASURY BI  US Fed Discount Rat
                ^IRX  Growth%        DISC  Growth%
           ---------- -------   ---------- -------
2026-08-28       3.67  100.00         3.75  100.00
2026-08-27       3.68  100.08         3.75  100.00
2026-08-26       3.69  100.41         3.75  100.00
2026-08-25       3.70  100.82         3.75  100.00
2026-08-24       3.70  100.76         3.75  100.00
2026-08-21       3.71  100.95         3.75  100.00
2026-08-20       3.70  100.76         3.75  100.00
2026-08-19       3.70  100.68         3.75  100.00
2026-08-18       3.70  100.82         3.75  100.00
2026-08-17       3.70  100.76         3.75  100.00
2026-08-14       3.70  100.60         3.75  100.00
2026-08-13       3.70  100.82         3.75  100.00
2026-08-12       3.71  100.87         3.75  100.00
2026-08-11       3.73  101.50         3.75  100.00
2026-08-10       3.72  101.17         3.75  100.00
2026-08-07       3.71  100.95         3.75  100.00
2026-08-06       3.73  101.55         3.75  100.00
2026-08-05       3.72  101.36         3.75  100.00
2026-08-04       3.73  101.50         3.75  100.00
2026-08-03       3.70  100.68         3.75  100.00
2026-07-31       3.68  100.19         3.75  100.00
2026-07-28       3.76  102.31         3.75  100.00
2026-06-28       3.66   99.67         3.75  100.00
2026-05-28       3.59   97.69         3.75  100.00
2026-04-28       3.59   97.69         3.75  100.00
2026-03-28       3.61   98.15         3.75  100.00
2026-02-28       3.58   97.36         3.75  100.00
2026-01-28       3.58   97.47         3.75  100.00
2025-12-28       3.54   96.41         3.75  100.00
2025-11-28       3.70  100.60         4.00  106.67
2025-10-28       3.72  101.22         4.25  113.33
2025-09-28       3.86  105.03         4.25  113.33
2025-08-28       4.07  110.80         4.50  120.00
2024-08-28       5.24  142.53         5.50  146.67
2023-08-28       5.30  144.22         5.50  146.67
2022-08-28       3.18   86.53         2.50   66.67
2021-08-28       0.03    0.76         0.25    6.67
2020-08-28       0.09    2.31         0.25    6.67
2019-08-28       1.77   48.16         2.75   73.33
2018-08-28       2.15   58.50         2.50   66.67
2017-08-28       1.03   27.97         1.75   46.67
2016-08-28       0.26    7.07         1.00   26.67
2015-08-28       0.01    0.14         0.75   20.00
2014-08-28       0.01    0.35         0.75   20.00
2013-08-28       0.01    0.14         0.75   20.00
2012-08-28       0.09    2.45         0.75   20.00
2011-08-28       0.01    0.27         0.75   20.00
2010-08-28       0.16    4.22         0.75   20.00
2009-08-28       0.12    3.13         0.50   13.33
2008-08-28       0.90   24.49         2.25   60.00
2007-08-28       3.70  100.68         5.75  153.33
2006-08-28       4.76  129.52         6.25  166.67
2005-08-28       3.47   94.42         4.50  120.00
2004-08-28       1.67   45.55         2.50   66.67
2003-08-28       0.93   25.20         2.00   53.33
2002-08-28       1.53   41.55                     
2001-08-28       2.30   62.59                     
2000-08-28       6.03  164.08                     
1999-08-28       4.71  128.16                     
1998-08-28       4.25  115.65                     
1997-08-28       4.97  135.24                     
1996-08-28       4.91  133.61                     
1995-08-28       5.24  142.59                     
1994-08-28       4.67  127.07                     
1993-08-28       2.92   79.46                     
1992-08-28       2.69   73.20                     
1991-08-28       5.11  139.05                     
1990-08-28       7.14  194.29                     
1989-08-28       7.91  215.24                     
1988-08-28       7.25  197.28                     
1987-08-28       6.61  179.86                     
1986-08-28       5.20  141.50                     
1985-08-28       7.04  191.56                     
1985-01-01       8.18  222.59                     

 

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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