The long and variable lags of monetary policy: Evidence from disaggregated price indices

We study how monetary policy affects subcomponents of the Personal Consumption Expenditures Price Index (PCEPI) using local projections. Following a monetary policy contraction, the response of aggregate PCEPI turns significantly negative after over three years. There are stark differences in the timing and magnitude of the responses across price categories, including some prices that show an initially positive response. We discuss theoretical interpretations of our findings and point to useful directions for future theoretical research. We also show how to re-aggregate our cross-sectional estimates and their standard errors, taking into account dependence between different prices using a Seemingly Unrelated Regression approach. Re-aggregation exercises show that changes in expenditure behavior have not accelerated the long-lagged response of inflation to monetary policy. •We study effects of monetary policy on prices using local projection.•After a monetary policy contraction, response of PCEPI turns negative after 43 months.•There are differences in the timing and size of the responses across price categories.•We also show how to re-aggregate our cross-sectional estimates and their standard errors.•Changes in expenditure behavior have not altered response of inflation to monetary policy.