The consumer price index is a weighted average collection of the prices of common goods and services. Changes in the CPI over time are used to estimate the rate of inflation. The consumer price ...

The CPI is used as a measure of inflation for policymakers, financial markets, businesses, and consumers. The Consumer Price Index (CPI) measures the monthly change in prices paid by U.S. consumers.

The CPI, as it is called, measures the prices of consumer goods and services and is a measure of the pace of US inflation. The US Department of Labor publishes the CPI every month.

January's consumer price index came in hot, with Trump tariffs set to push prices higher. S&P 500 futures tumbled on the CPI inflation report.