Introduction

04/15/1998 — 02/28/2025Released MonthlyLast Updated 01/15/20252 Data Tables

The TIPS and CPI Data dataset contains data on Treasury Inflation Protected Securities (TIPS) and the Consumer Price Index (CPI). The principal of a TIPS fluctuates with inflation and deflation. While the interest rate is fixed, the amount of interest paid every six months may vary based on any change in the principal. Those changes are tied to the Consumer Price Index from the U.S. Department of Labor, Bureau of Labor Statistics. This dataset is useful in calculating inflation-adjusted interest payments.

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Date Range

To filter data by date range, select a CUSIP from the table below.

Data Table:

N/A

Date Range:

CSVJSONXML

Dataset Properties

Data Table Name	Field Name	Display Name	Description	Data Type	Is Required
Reference CPI Numbers and Daily Index Ratios Summary Table	cusip	CUSIP	A unique nine-character combination assigned to the security being announced/auctioned. They are provided by the CUSIP (Committee on Uniform Securities Identification Procedures) Service Bureau, which is operated by Standard & Poors for the American Bankers Association.	STRING	1
Reference CPI Numbers and Daily Index Ratios Summary Table	interest_rate	Interest Rate	Coupon rate or annual percentage rate paid on face value of security.	PERCENTAGE	1
Reference CPI Numbers and Daily Index Ratios Summary Table	security_term	Security Term	The term of the security.	STRING	1
Reference CPI Numbers and Daily Index Ratios Summary Table	original_auction_date	Original Auction Date	This is the date on which the auction of the security being announced/auctioned is held.	DATE	1
Reference CPI Numbers and Daily Index Ratios Summary Table	maturity_date	Maturity Date	Date which the face value, or inflation-adjusted principal of the security being announced/auctioned is paid to investor. Security also ceases to earn interest on this date.	DATE	1

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API Quick Guide

Endpoints

BASE URL:

https://api.fiscaldata.treasury.gov/services/api/fiscal_service/

Table Name	Endpoint

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FULL URL:

https://api.fiscaldata.treasury.gov/services/api/fiscal_service/

Fields

Refer to Dataset Properties above for a data dictionary with field names and descriptions, as well as notes and known limitations. known limitations.

Field Name	Display Name	Data Type	Data Table Name

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Data Types

All data is returned as a string, including nulls. Refer to the chart above for the intended data type of each field.

TIPS and CPI Data

Introduction

Reports and Files

Data Preview

Date Range

Dataset Properties

Notes & Known Limitations

API Quick Guide

TIPS and CPI Data

Introduction

Reports and Files

Data Preview

Date Range

Dataset Properties

Notes & Known Limitations

API Quick Guide

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