Purpose: Taxation plays a critical role in raising the resources needed for financing government activities in developing countries. On the other hand, the volatility of real exchange rates (RERs) has generated significant concern among academics and policymakers in view of its effects on macroeconomic variables such as tax revenue generation. This study therefore focused on real exchange rate depreciation on domestic tax revenue performance in Kenya. The study was guided Theory of Constraints. Methodology: The study employed an explanatory research design. Secondary data was collected from the CBK, KRA, and the World Bank. In this study time series data ranging from 2003 – 2023 was used to analyze the determinants of domestic tax revenue performance in Kenya. The hypotheses were tested at a significance level of .05 using the multiple regression analysis. A multivariate time series ARDL regression analysis model was used to analyze the data. Results: The study ARDL model concluded that Real exchange rate depreciation led to a notable decrease in domestic tax revenue performance, with β = -0.223945 and p = 0.000 < 0.05. This effect is intensified when considering the lagged impact, where a one-period lagged depreciation results in an even greater reduction in tax revenue performance, β = -1.927412 and p = 0.0004 < 0.05. Conclusion: The study recommended that government of Kenya should stabilize the exchange rate and prevent excessive depreciation by fostering a favorable trade balance and maintaining investor confidence. Additionally, future research could focus on the effects of fiscal Policy Changes on domestic tax revenue performance. Also, future studies could examine Impact of Global Economic Shocks on Domestic Tax Revenue.
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