The Personal consumption expenditures price index, also referred to as simply the PCE price index, is used as one measure of the value of money. It is a United States-wide indicator of the average increase in prices for all domestic personal consumption. Using a variety of data including U.S. Consumer Price Index and Producer Price Index prices, it is derived from the largest component of the Gross Domestic Product in the BEA's National Income and Product Accounts, personal consumption expenditures.
One of the Fed's main roles is to maintain price stability, which means that the Fed's ability to keep a low inflation rate is a long-term measure of the their success 1. Although the Fed is not required to maintain inflation within a specific range, their long run target for the growth of the PCE price index is between 1.5 and 2 percent 2. There has been debate among policy makers as to whether or not the Federal Reserve should have a specific inflation targeting policy 3, 4, 5.