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The Effect of Interest Rates, Inflation, and Money Supply on Economic Growth through Exchange Rate Transmission in Indonesia

Anugrah Tri Saputra, Sri Astuty, Irwandi, Regina, Citra Ayni Kamaruddin

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  • Anugrah Tri Saputra: Universitas Negeri Makassar, Indonesia
  • Sri Astuty: Universitas Negeri Makassar, Indonesia
  • Irwandi: Universitas Negeri Makassar, Indonesia
  • Regina: Universitas Negeri Makassar, Indonesia
  • Citra Ayni Kamaruddin: Universitas Negeri Makassar, Indonesia
Published:
September 28, 2026
Pages:
1146–1153

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Abstract

Understanding monetary transmission mechanisms is critical for emerging open economies navigating external volatility. This study investigates the direct and indirect impacts of interest rates, inflation, and money supply on Indonesia's economic growth from 2014 to 2024, examining the mediating role of the Rupiah-to-USD exchange rate. Utilizing a quantitative explanatory design with annual time-series data from Bank Indonesia and BPS, the research applies Partial Least Squares Structural Equation Modeling (PLS-SEM) via SmartPLS 4. Empirical results demonstrate a high coefficient of determination for the exchange rate (R² = 0.939) and economic growth (R² = 0.359). Findings reveal that interest rates exert a significant direct effect on growth (coef = 0.417, p = 0.003) but have an insignificant impact on the exchange rate. Inflation positively influences growth (coef = 0.650, p = 0.001) while negatively affecting the exchange rate (coef = -0.313, p = 0.007). The money supply significantly impacts both exchange rates (coef = 0.791, p = 0.000) and economic growth (coef = -0.390, p = 0.025). Crucially, the exchange rate acts as a potent mediating channel (coef = 0.894, p = 0.000), transmitting shocks to real output. The findings underscore that monetary policy must integrate exchange rate stability and liquidity management alongside interest rate adjustments.

Author Biographies
Anugrah Tri Saputra

Universitas Negeri Makassar

Development Economics Study Program, Faculty of Economics and Business, Universitas Negeri Makassar, Makassar City, South Sulawesi Province, Indonesia.

Sri Astuty

Universitas Negeri Makassar

Development Economics Study Program, Faculty of Economics and Business, Universitas Negeri Makassar, Makassar City, South Sulawesi Province, Indonesia.

Irwandi

Universitas Negeri Makassar

Development Economics Study Program, Faculty of Economics and Business, Universitas Negeri Makassar, Makassar City, South Sulawesi Province, Indonesia.

Regina

Universitas Negeri Makassar

Development Economics Study Program, Faculty of Economics and Business, Universitas Negeri Makassar, Makassar City, South Sulawesi Province, Indonesia.

Citra Ayni Kamaruddin

Universitas Negeri Makassar

Development Economics Study Program, Faculty of Economics and Business, Universitas Negeri Makassar, Makassar City, South Sulawesi Province, Indonesia.

Article Identifiers
  • Article Title: The Effect of Interest Rates, Inflation, and Money Supply on Economic Growth through Exchange Rate Transmission in Indonesia
  • DOI: 10.59431/ijer.v6i3.898
  • Publication Date: 2026-09-28
  • Journal: Indonesian Journal Economic Review (IJER)
  • Volume: 6
  • Issue: 3
  • Pages: 1146–1153
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Issue Information

Article Details

Volume: 6
Issue: 3
Year: 2026
Published: 2026-09-28
Pages: 1146–1153
Section: Articles
View Full Issue
Additional Information

How to Cite

Saputra, A. T. ., Astuty, S., Irwandi, Regina, & Kamaruddin, C. A. (2026). The Effect of Interest Rates, Inflation, and Money Supply on Economic Growth through Exchange Rate Transmission in Indonesia. Indonesian Journal Economic Review (IJER), 6(3), 1146–1153. https://doi.org/10.59431/ijer.v6i3.898
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