4-Week Treasury Bill Secondary Market Rate, Discount Basis (TB4WK)

Observations

Sep 2026: 3.79
Updated: Oct 1, 2026 3:16 PM CDT
Next Release Date: Oct 5, 2026
Sep 2026:  3.79  
Aug 2026:  3.64  
Jul 2026:  3.64  
Jun 2026:  3.61  
May 2026:  3.60  
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Units:

Percent,
Not Seasonally Adjusted

Frequency:

Monthly

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Notes

Source: Board of Governors of the Federal Reserve System (US)  

Release: H.15 Selected Interest Rates  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Averages of business days. Discount basis.

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Suggested Citation:

Board of Governors of the Federal Reserve System (US), 4-Week Treasury Bill Secondary Market Rate, Discount Basis [TB4WK], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/TB4WK, .

Release Tables

H.15 Selected Interest Rates

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Annual, Not Seasonally Adjusted Daily, Not Seasonally Adjusted Weekly, Not Seasonally Adjusted

Related Categories

Treasury Bills Interest Rates Money, Banking, & Finance

Releases

More Series from H.15 Selected Interest Rates

Tags

Secondary Market 1-Month Bills H.15 Selected Interest Rates Treasury Interest Rate Interest Board of Governors Rate Monthly Nation Public Domain: Citation Requested United States of America Not Seasonally Adjusted

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