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G3MOD: A Multi-Country Global Forecasting Model

Author

Listed:
  • Mr. Iaroslav Miller
  • Daniel Baksa
  • Mr. Philippe D Karam
  • Tugrul Vehbi

Abstract

This paper develops G3MOD, a semi-structural gap-trend model designed for frequent external sector forecasts crucial in macroeconomic forecasting. Focused on the G3 economies (US, Euro Area, and China) and the rest of the world, G3MOD leverages insights from central banks’ policy models, to consistently translate external forecasts such as the IMF’s World Economic Outlook into a Quarterly Projection Model format. The model offers flexible simulations and policy assessments and is structured around trade and financial linkages. G3MOD supports model-based forecasts and risk evaluations, helping central banks integrate external forecasts and scenarios into their own forecasts, thus generating timely macroeconomic projections. Its calibration ensures alignment with historical data, economic coherence, and robust predictive capability, and it has been validated against major global projection models. The complete set of codes, calibrated parameter values, and supporting programs are posted with this working paper.

Suggested Citation

  • Mr. Iaroslav Miller & Daniel Baksa & Mr. Philippe D Karam & Tugrul Vehbi, 2024. "G3MOD: A Multi-Country Global Forecasting Model," IMF Working Papers 2024/254, International Monetary Fund.
    • Handle: RePEc:imf:imfwpa:2024/254
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