IMF-评估自有住房成本计量变化的货币政策影响_来自ICEQMOD的见解（英）-2025.7_15页_1mb

IMF Selected Issues Paper Summary: Assessing the Monetary Policy Implications of Changes in Owner-Occupied Housing Cost Measurement: Insights from ICEQMOD

• Introduction:

  • Iceland is a small, advanced economy with a floating exchange rate and significant trade openness. It employs an inflation-targeting framework with a 2.5% target, but realized inflation has averaged 4.9% since 2001, highlighting challenges in policy formulation due to structural shocks and economic transformation.

• IceQMod Model Overview:

  • ICEQMOD is a semi-structural Quarterly Projection Model (QPM) calibrated to Icelandic data, incorporating New Keynesian theory with elements like sticky wages/prices, export dominance (fisheries, aluminum, tourism), and high capital mobility. It features equations for output, inflation, monetary policy, and external factors, with Bayesian estimation of parameters.

• Housing Cost Measurement Change Impact:

  • The shift from "user cost" to "rental equivalence" method for estimating owner-occupied housing cost in the CPI could lower average inflation (synthetic CPI averages 4.7% vs. 4.9%), increase volatility, and alter monetary policy stance.
  • Counterfactual analysis suggests the policy rate might be lower on average and more volatile. If the target inflation is unchanged, central banks could maintain looser policy during periods of rising house prices.

• Conclusion:

  • The measurement change may result in lower, more volatile inflation. Further implications include potential need for macroprudential tools to manage housing market fluctuations, as the Monetary Policy Committee may have implicitly "leaned against the wind" on asset prices. Results should be cautious due to data limitations in synthetic CPI construction.