30-Year 2-1/8% Treasury Inflation-Indexed Bond, Due 2/15/2040
DTP30F40 • Economic Data from Federal Reserve Economic Data (FRED)
Latest Value
2.16
Year-over-Year Change
-3.18%
Date Range
10/7/2021 - 8/6/2025
Summary
The 30-Year Treasury Inflation-Indexed Bond represents a critical financial instrument that provides investors with protection against inflation over a long-term investment horizon. This bond type allows investors to preserve purchasing power by adjusting principal and interest payments based on changes in the Consumer Price Index (CPI).
Analysis & Context
This economic indicator provides valuable insights into current market conditions and economic trends. The data is updated regularly by the Federal Reserve and represents one of the most reliable sources for economic analysis.
Understanding this metric helps economists, policymakers, and investors make informed decisions about economic conditions and future trends. The interactive chart above allows you to explore historical patterns and identify key trends over time.
About This Dataset
Treasury Inflation-Protected Securities (TIPS) are government bonds designed to shield investors from inflationary risks by linking their value to inflation rates. Economists and investors closely monitor these securities as indicators of market expectations about future inflation and real interest rates.
Methodology
The bond's principal value is adjusted quarterly based on the Consumer Price Index for All Urban Consumers (CPI-U), with interest payments calculated on the inflation-adjusted principal.
Historical Context
These bonds are crucial for macroeconomic analysis, providing insights into market expectations of long-term inflation and serving as a benchmark for real interest rates.
Key Facts
- Provides protection against inflation by adjusting principal with CPI changes
- Offers a guaranteed real rate of return
- Issued and backed by the U.S. Treasury Department
FAQs
Q: How do Treasury Inflation-Protected Securities work?
A: TIPS adjust their principal value based on inflation, with interest payments calculated on the inflation-adjusted principal. This ensures the investment maintains its purchasing power over time.
Q: Why would an investor choose TIPS?
A: Investors select TIPS to protect their portfolio against inflation risk and maintain real returns, especially during periods of economic uncertainty or rising prices.
Q: How is the inflation adjustment calculated?
A: The principal is adjusted quarterly using the Consumer Price Index for All Urban Consumers (CPI-U), with increases adding to the bond's principal value.
Q: What makes this 30-year bond unique?
A: The extended 30-year maturity provides long-term inflation protection and serves as a strategic investment for retirement planning and institutional investors.
Q: How often is this data updated?
A: The bond's data is typically updated quarterly, coinciding with CPI adjustments and market pricing changes.
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Citation
U.S. Federal Reserve, 30-Year 2-1/8% Treasury Inflation-Indexed Bond, Due 2/15/2040 [DTP30F40], retrieved from FRED.
Last Checked: 8/1/2025