| Summary: | The welfare and cyclical implications of moderate trend inflation are addressed in an augmented medium-scale DSGE model. Increasing trend inflation from 2 to 4 percent generates a consumption-equivalent welfare loss of about 4 percent. Welfare costs of this magnitude are driven by: staggered wage contracts, trend growth, extended borrowing, a roundabout production structure, and the interaction between trend inflation and shocks to the marginal efficiency of investment (MEI). A sticky-price model abstracting from these features generates much smaller losses. Moderate trend inflation also has important business-cycle implications, interacting much more strongly with MEI shocks than with productivity or monetary shocks.
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