© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.Poverty reduction and economic progress and development accentuate sustainability and growth. This study explores a new model that specifies the FDI-led growth theory for the Rwandan economy. An annual time series data from 1970 to 2018 was obtained from the World Bank. The Johansen cointegration and ARDL approaches were used after realizing a varied order of integration from the stationarity test by adopting unit root tests. All variables were established to wield a positive impact on economic development except financial development from the financial sector which was significant in the short run but insignificant in the long run. Financial development from the private sector, exchange rate, consumer price index, gross domestic product, and population wield significant influence on FDI inflow for economic development, which implies that an improvement in these factors will equitably support economic growth. In principle, 1% improvement in the financial development from the private sector and exchange rate will produce a corresponding 397% and 78% increase advancement in FDI inflows in the long run. Averagely, financial development from the private sector, exchange rate, consumer price index, gross domestic product, and population are valuable to the economy of Rwanda. Therefore, we recommend that the relevant authority expand regional and global bilateral and partnership to enhance the economy to fully reap the benefits of engaging in globalization.