This paper analyses the effect of Financial Technology (FinTech) development on banking efficiency in 28 Sub-Saharan African (SSA) countries over the period 2007–2018. Using a two-way fixed effects framework, supplemented by dynamic, timing-based, and falsification checks to address endogeneity concerns, it shows that FinTech development is positively associated with banking efficiency. FinTech improves the composite banking-efficiency index and operates primarily through narrower lending-deposit spreads, stronger non-interest income generation, and higher returns on assets and equity. The findings remain stable across alternative econometric approaches, measurement choices, and finite-horizon persistence checks. Overall, the paper suggests that FinTech can strengthen financial intermediation in structurally constrained banking systems and that policy frameworks fostering complementarity between FinTech providers and incumbent banks may support efficiency gains and broader financial sector development in the region.