Federal Reserve Economic Data

3-Month Treasury Constant Maturity Minus Federal Funds Rate (T3MFFM)

Dec 2025: -0.05
Updated: Jan 2, 2026 4:04 PM CST
Dec 2025:  -0.05  
Nov 2025:  0.06  
Oct 2025:  -0.10  
Sep 2025:  -0.16  
Aug 2025:  -0.03  
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Units:

Percent,
Not Seasonally Adjusted

Frequency:

Monthly

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Notes

Source: Federal Reserve Bank of St. Louis  

Release: Interest Rate Spreads

Units:  Percent, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Series is calculated as the spread between 3-Month Treasury Constant Maturity (BC_3MONTHM) 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, 3-Month Treasury Constant Maturity Minus Federal Funds Rate [T3MFFM], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/T3MFFM, .

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