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
   2026-05-07: 3.59800005 Percent
with:
   US Fed Discount Rate
   US: DISC
   2026-05-07: 3.75000000 Percent

          13 WEEK TREASURY BI  US Fed Discount Rat
                ^IRX  Growth%        DISC  Growth%
           ---------- -------   ---------- -------
2026-05-07       3.60  100.00         3.75  100.00
2026-05-06       3.60  100.06         3.75  100.00
2026-05-05       3.60  100.06         3.75  100.00
2026-05-04       3.59   99.78         3.75  100.00
2026-05-01       3.58   99.36         3.75  100.00
2026-04-30       3.59   99.64         3.75  100.00
2026-04-29       3.59   99.78         3.75  100.00
2026-04-28       3.59   99.78         3.75  100.00
2026-04-27       3.59   99.78         3.75  100.00
2026-04-24       3.59   99.86         3.75  100.00
2026-04-23       3.60   99.92         3.75  100.00
2026-04-22       3.60   99.92         3.75  100.00
2026-04-21       3.60  100.00         3.75  100.00
2026-04-20       3.60  100.00         3.75  100.00
2026-04-17       3.60  100.06         3.75  100.00
2026-04-16       3.61  100.33         3.75  100.00
2026-04-15       3.61  100.39         3.75  100.00
2026-04-14       3.61  100.39         3.75  100.00
2026-04-13       3.60  100.14         3.75  100.00
2026-04-10       3.59   99.86         3.75  100.00
2026-04-09       3.59   99.72         3.75  100.00
2026-04-07       3.62  100.47         3.75  100.00
2026-03-07       3.57   99.22         3.75  100.00
2026-02-07       3.59   99.78         3.75  100.00
2026-01-07       3.52   97.69         3.75  100.00
2025-12-07       3.60  100.14         4.00  106.67
2025-11-07       3.76  104.42         4.00  106.67
2025-10-07       3.84  106.81         4.25  113.33
2025-09-07       3.91  108.67         4.50  120.00
2025-08-07       4.14  115.01         4.50  120.00
2025-07-07       4.24  117.98         4.50  120.00
2025-06-07       4.23  117.62         4.50  120.00
2025-05-07       4.22  117.15         4.50  120.00
2024-05-07       5.24  145.58         5.50  146.67
2023-05-07       5.15  143.22         5.25  140.00
2022-05-07       1.60   44.47         1.00   26.67
2021-05-07       0.04    1.11         0.25    6.67
2020-05-07       0.14    3.75         0.25    6.67
2019-05-07       2.04   56.56         3.00   80.00
2018-05-07       1.88   52.25         2.25   60.00
2017-05-07       0.99   27.60         1.50   40.00
2016-05-07       0.25    6.89         1.00   26.67
2015-05-07       0.01    0.28         0.75   20.00
2014-05-07       0.02    0.56         0.75   20.00
2013-05-07       0.03    0.83         0.75   20.00
2012-05-07       0.08    2.22         0.75   20.00
2011-05-07       0.02    0.42         0.75   20.00
2010-05-07       0.17    4.72         0.75   20.00
2009-05-07       0.18    5.00         0.50   13.33
2008-05-07       1.71   47.39         2.25   60.00
2007-05-07       4.67  129.79         6.25  166.67
2006-05-07       4.86  135.08         5.75  153.33
2005-05-07       3.06   85.05         4.00  106.67
2004-05-07       1.30   36.21         2.00   53.33
2003-05-07       0.84   23.29         2.25   60.00
2002-05-07       1.66   46.11                     
2001-05-07       3.56   98.94                     
2000-05-07       5.70  158.42                     
1999-05-07       4.67  129.79                     
1998-05-07       4.97  138.13                     
1997-05-07       5.05  140.36                     
1996-05-07       5.03  139.80                     
1995-05-07       5.43  150.92                     
1994-05-07       4.14  115.06                     
1993-05-07       3.03   84.21                     
1992-05-07       3.57   99.22                     
1991-05-07       5.54  153.97                     
1990-05-07       7.74  215.12                     
1989-05-07       7.99  222.07                     
1988-05-07       6.56  182.32                     
1987-05-07       5.73  159.26                     
1986-05-07       5.96  165.65                     
1985-05-07       6.83  189.83                     
1985-01-01       8.18  227.35                     

 

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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