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Time-Varying Trend Inflation and the New Keynesian Phillips Curve in Australia

Denny Lie () and Anirudh S. Yadav

No 2015-14, Working Papers from University of Sydney, School of Economics

Abstract: This paper investigates whether the persistence and the time-varying nature of trend inflation can explain the persistence of inflation in Australia - that is, whether it can explain the apparent need for the backward-looking inflation term in the New Keynesian Phillips curve (NKPC) estimated using Australian data. We derive and estimate an extended open-economy NKPC equation, accounting explicitly for time-varying trend inflation. The paper finds that although the estimated role for backward-looking indexation is near zero in some difference-equation specifications, when one considers the closed-form specifications of the NKPC, the parameter estimate increases dramatically, implying a high degree of indexation to past inflation. Thus, in contrast to Cogley and Sbordones (2008) result for the US economy, our estimates suggest that accounting for time variation in trend inflation in the NKPC cannot explain away the inertia in the Australian inflation data. Our preferred estimates suggest that lagged inflation and future expectations of inflation enter the NKPC with almost equal weights. Finally, notwithstanding the previous results, we find a marked decline in the role of the backward-looking inflation terms since the adoption of an inflation targeting regime by the Reserve Bank in 1993.

Date: 2015-05
New Economics Papers: this item is included in nep-cba and nep-mac
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Journal Article: Time-Varying Trend Inflation and the New Keynesian Phillips Curve in Australia (2017) Downloads
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