Federal Reserve Economic Data

6-Month Treasury Constant Maturity Minus Federal Funds Rate (T6MFF)

2025-12-09: -0.19
Updated: Dec 10, 2025 4:02 PM CST
2025-12-09:  -0.19  
2025-12-08:  -0.20  
2025-12-05:  -0.21  
2025-12-04:  -0.20  
2025-12-03:  -0.21  
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Units:

Percent,
Not Seasonally Adjusted

Frequency:

Daily

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Notes

Source: Federal Reserve Bank of St. Louis  

Release: Interest Rate Spreads

Units:  Percent, Not Seasonally Adjusted

Frequency:  Daily

Notes:

Series is calculated as the spread between 6-Month Treasury Constant Maturity (BC_6MONTH) and Effective Federal Funds Rate (https://fred.stlouisfed.org/series/EFFR).
Starting with the update on June 21, 2019, the Treasury bond data used in calculating interest rate spreads is obtained directly from the U.S. Treasury Department.

Suggested Citation:

Federal Reserve Bank of St. Louis, 6-Month Treasury Constant Maturity Minus Federal Funds Rate [T6MFF], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/T6MFF, .

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