Exchange rate volatility is one of the most noteworthy indicators of economic growth, and global trade and economic integration have been approved as important catalysts that accelerate a country's economic growth. Thus, the severe variations observed in recent decades are of great interest to non-industrialized economies like Rwanda. In general, when the value of the national currency decreases, exports rise because domestic goods and services are more affordable in foreign markets, while domestic demand for imports decreases at home. A rise in the value of the national currency has the opposite effect, increasing the competitiveness of imports and driving up the cost of exports, thus increasing Rwanda's trade deficit. The local currency's exchange rate, however, has a critical role in setting prices, productivity levels, the amount of foreign assets held in the country, and the nation's ability to draw in investments, especially considering its small and open economy. Various studies demonstrate that stable exchange rates contribute to the country's financial stability throughout the long run as well as the short term.Therefore, the primary objective of this research was to assess how exchange rate fluctuations affect economic growth. The Mundell-Fleming model, the model of Balassa-Samuelson, and the productivity effects model serve as the foundation for the study. This research employed a descriptive research design. The research findings proved that the volatility of the exchange rate has a higher influence on economic growth. The study recommends that policymakers should stabilize the exchange rate by promoting exports and building and managing an adequate level of foreign exchange reserves. Fiscal and monetary authorities should ensure a consistent and complementary approach to managing exchange rate fluctuations in the country's economy.