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Monthly Reference CPI Numbers and Daily Index Ratios Table (TIPS/CPI Data)

Published by Bureau of the Fiscal Service | Department of the Treasury | Metadata Last Checked: June 27, 2025 | Last Modified: 2016-07-28
Treasury Inflation-Protected Securities, also known as TIPS, are securities whose principal is tied to the Consumer Price Index. With inflation, the principal increases. With deflation, it decreases. When the security matures, the U.S. Treasury pays the original or adjusted principal, whichever is greater.

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