How often is the Consumer Price Index (CPI) calculated?

The Consumer Price Index (CPI) is calculated on a monthly basis. This frequent calculation allows for timely assessment of inflation levels and cost of living adjustments. By reporting CPI monthly, economic analysts, policymakers, and consumers can stay informed about changing prices and make more informed decisions. Regular updates are essential for accurately tracking inflation trends over time, influencing both monetary policy and social security benefits adjustments.

The other choices imply less frequent updates, which would not provide the level of responsiveness and detail necessary for effective economic analysis and decision-making. For instance, a yearly calculation would delay insights into price movements and inflationary pressures, hindering timely policy responses or adjustments in various economic sectors.