This special release presents data on Consumer Price Index (CPI for all income households in the National Capital Region (NCR). The CPI is an indicator of the change in the average prices of goods and services commonly purchased by consumers relative to a base year. It is most widely used in the calculation of the Inflation Rate and Purchasing Power of the Peso (PPP). The Inflation Rate is defined as the annual rate of change or the year-on-year change in the CPI. On the other hand, the PPP is a measure of the real value of the peso in a given period relative to a chosen reference period. The PSA releases data on CPI five days after the reference month which is posted on the PSA website (www.psa.gov.ph). Data series are also available at the OpenSTAT database portal of the PSA website.