Advances in Bioengineering and Biomedical Science Research(ABBSR)

Risk and Strategy Analysis Department at Rwanda Revenue Authority, Rwanda

Publications

• Review Article   
  Exploring the Co-Movements of Tax-to-GDP in Rwanda: A Wavelet Analysis Approach
  Author(s): Clement Uwizeye*
  
  This study explores the co-movements of the Tax-to-GDP ratio with various economic indicators in Rwanda using wavelet analysis with monthly data from 2008 to 2023. The descriptive analysis reveals a generally increasing Tax-to-GDP ratio, indicating effective tax policies aligned with industry growth and nominal GDP. However, the Tax-to-GDP declined, coinciding with rising inflation, increasing interest rates, and a contracting service sector. Despite high volatility in inflation and a decreasing trend in interest rates until 2021, the Tax-to-GDP demonstrated resilience. The wavelet coherence analysis (WCA) indicates strong correlations between the Tax-to-GDP ratio and several economic variables during specific periods, particularly between 2008- 2010, 2016-2020, and 2020-2023, while weaker correlations were observed during 2010-2016, similar to robustness check using partial wavelet c.. Read More»
  

  Abstract HTML PDF