Short-term inflation projections: Τhe new BOG’STIP model

Zacharias Bragoudakis, Alexandros Karakitsios and Evangelia Kasimati
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Zacharias Bragoudakis: Bank of Greece
Alexandros Karakitsios: Bank of Greece
Evangelia Kasimati: Bank of Greece

No 363, Working Papers from Bank of Greece

Abstract: This paper outlines the operational framework of the new Short-Term Inflation Projections model for the Greek economy - BoG’STIP model (hereafter) currently employed by the Bank of Greece within the context of the Eurosystem’s inflation projection exercises. The new BoG’STIP model is designed to produce monthly projections for the Greek inflation over a 36-month horizon, providing a critical input for monetary policy decisions. It consists of a set of short-term dynamic equations for the Harmonised Index of Consumer Prices (HICP) and its main components, estimated with emphasis on both the statistical fit and the economic plausibility of the estimated coefficients. Using a pseudo real-time forecasting setup, the model is estimated over the period 1995–2021 and generates projections for 2022–2024. The findings indicate that BoG’STIP model outperforms benchmark models such as AR and ARIMA across most HICP components, except for energy, confirming its robustness and practical value despite certain limitations. The model also exhibits strong forecasting performance for headline inflation, particularly at the 12-month horizon, and effectively captures broader inflationary trends even over longer horizons (up to 36 months). The paper contributes both operationally, by documenting a projection framework compatible with the Broadly Eurosystem Macroeconomics Projections Exercise ((B)MPE) and the Eurosystem Narrow Inflation Projections Exercise (NIPE) and empirically, by providing a transparent and policy-ready inflation forecasting tool tailored to the Greek economy.

Keywords: BMPE; Greek economy; Inflation forecasting; NIPE; STIP model (search for similar items in EconPapers)
JEL-codes: C32 C51 C52 C53 E31 (search for similar items in EconPapers)
Pages: 32
Date: 2026-06
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