Understanding Inflation in Fundamental Analysis

Inflation refers to the rate at which the general level of prices for goods and services rises over time. When inflation is high, each unit of currency buys relatively less than it did before; when inflation is low or negative (deflation), purchasing power is more stable or increasing.

Inflation is typically measured using indices such as the Consumer Price Index (CPI), which tracks the average change in prices for a representative basket of goods and services over time. Some countries also track measures like the Producer Price Index (PPI), which reflects price changes at the wholesale or production level, sometimes seen as an early indicator of future consumer price changes.

Most central banks have an explicit or implicit inflation target, aiming to keep price increases within a stable, moderate range. When inflation runs significantly above target, central banks may raise interest rates to help cool economic activity and slow price growth. When inflation runs below target, central banks may lower rates to stimulate economic activity.

Beyond its direct link to interest rate policy, inflation data can influence broader market sentiment, currency valuations, and expectations about future economic conditions. Because inflation reports are often compared against forecasts, the surprise element (as discussed in the previous unit) tends to play a significant role in how markets react to a specific release.