Assessing Inflation Persistence: Micro Evidence

The paper provides an empirical analysis of inflation persistence in one of the inflation targeting countries, the Czech Republic, using 412 detailed product-level consumer price indexes underlying the consumer basket over the period from 1994:M1 to 2005:M12. Subject to various sensitivity tests, our results suggest that raw goods and non-durables, followed by services, display smaller inflation persistence than durables and processed goods. Inflation seems to be somewhat less persistent after the adoption of inflation tar-geting in 1998. There is also evidence for aggregation bias, that is, aggregate inflation is found to be more persistent than the underlying detailed components. Price dispersion, as a proxy for the degree of competition, is found to be negatively related to inflation per-sistence, suggesting that competition is not conducive to reducing persistence. 1