The Impact of Manufacturing Exports on Economic Growth in Tanzania: A Time Series Analysis

Abstract

This study investigates the impact of manufacturing exports, specificallyceramics, iron and steel, and plastics on economic growth in Tanzania from 1991to 2023. Grounded in the Heckscher-Ohlin and Export-Led Growth theories,using a multiple regression model supported by diagnostic stability tests and aVariance Inflation Factor (VIF) test to ensure robustness. The results reveal thatexports of ceramics and plastics have significantly increased over the studyperiod and positively contributed to economic growth, reinforcing the role ofexport expansion in driving economic development. However, the growingvolume of plastic exports raises environmental concerns, suggesting a trade-offbetween short-term economic benefits and long-term ecological sustainability.In contrast, iron and steel exports show no substantial impact on growth, possiblydue to dependency on imported raw materials, limited technologicaladvancement, and underdeveloped domestic value chains. The analysis also findsthat foreign direct investment (FDI) exerts a positive effect on growth, whereasexchange rate fluctuations have minimal influence on the performance ofTanzania’s manufacturing sector. These findings underscore the need tostrengthen the country’s export-led growth strategy by enhancing support formanufacturing sectors through targeted investment, technology upgrading, andindustrial policy. They also highlight the importance of designing incentivestructures that not only boost competitiveness in export markets but alsoencourage environmentally sustainable production practices. Addressing theseareas, Tanzania can better harness the potential of its manufacturing sector todrive inclusive and sustainable economic growth. Keywords: Manufacturing exports, impact, economic growth, time-series, Tanzania.