Core CPI Inflation Rate — Historical Chart

Frequently Asked Questions

What is core CPI?

Core CPI is the Consumer Price Index with food and energy prices excluded. It is designed to measure "underlying" inflation by removing volatile components that often reflect temporary supply shocks rather than persistent demand-driven inflation.

Why do economists focus on core inflation?

Food and energy prices are highly volatile due to supply factors (weather, geopolitics, OPEC decisions) that central banks cannot control through interest rate policy. Core inflation better reflects the persistent, demand-driven price pressures that the Fed can actually influence.

What components drive core CPI higher?

The main core CPI components are shelter (housing costs, ~40% of core CPI), services prices (healthcare, education, transportation), and core goods (cars, appliances). Shelter is the largest contributor and tends to be "sticky" — slow to fall even after rent markets cool.

When does core CPI diverge significantly from headline CPI?

Core and headline CPI diverge most during energy price shocks. During the 2022 inflation surge, headline CPI reached 9% while core stayed closer to 6% — the gap reflecting the energy component. In deflationary periods, falling oil prices can push headline below core.