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Market Yield on U.S. Treasury Securities at 20-Year Constant Maturity, Quoted on an Investment Basis, Inflation-Indexed (DFII20)

Observations

2026-08-13: 2.76
Updated: Aug 14, 2026 3:17 PM CDT
2026-08-13:  2.76  
2026-08-12:  2.78  
2026-08-11:  2.79  
2026-08-10:  2.79  
2026-08-07:  2.75  

Units:

Percent,
Not Seasonally Adjusted

Frequency:

Daily

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Notes

Title Release Dates
20-Year Treasury Inflation-Indexed Security, Constant Maturity 2005-10-12 2014-04-01
Market Yield on U.S. Treasury Securities at 20-Year Constant Maturity, Quoted on an Investment Basis, Inflation-Indexed 2014-04-02 2026-08-14
 
Source    
Board of Governors of the Federal Reserve System (US) 2005-10-12 2026-08-14
 
Release    
H.15 Selected Interest Rates 2005-10-12 2026-08-14
 
Units    
Percent 2005-10-12 2026-08-14
 
Frequency    
Daily 2005-10-12 2026-08-14
 
Seasonal Adjustment    
Not Seasonally Adjusted 2005-10-12 2026-08-14
 
Notes    
For further information regarding treasury constant maturity data, please refer to http://www.federalreserve.gov/releases/h15/current/h15.pdf and http://www.treasury.gov/resource-center/data-chart-center/interest-rates/Pages/yieldmethod.aspx.

2005-10-12 2014-04-01
For further information regarding treasury constant maturity data, please refer to the H.15 Statistical Release notes (https://www.federalreserve.gov/releases/h15/default.htm) and the Treasury Yield Curve Methodology (https://home.treasury.gov/policy-issues/financing-the-government/interest-rate-statistics/treasury-yield-curve-methodology).

2014-04-02 2025-01-06
H.15 Statistical Release notes (https://www.federalreserve.gov/releases/h15/default.htm) and the Treasury Yield Curve Methodology (https://home.treasury.gov/policy-issues/financing-the-government/interest-rate-statistics/treasury-yield-curve-methodology).

For questions on the data, please contact the data source (https://www.federalreserve.gov/apps/ContactUs/feedback.aspx?refurl=/releases/h15/%). For questions on FRED functionality, please contact us here (https://fred.stlouisfed.org/contactus/).

2025-01-07 2026-08-14

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H.15 Selected Interest Rates

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Treasury Inflation-Indexed Securities Treasury Constant Maturity Interest Rates Money, Banking, & Finance

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20-Year Treasury Inflation-Indexes Securities (TIPS) Maturity H.15 Selected Interest Rates Treasury Securities Interest Rate Interest Daily Real Board of Governors Rate Nation Public Domain: Citation Requested United States of America Not Seasonally Adjusted