The Impact of Cluster Development Initiatives on Non-Financial Performance of SMEs: Evidence from a Quasi-Experimental Study in Tanzania

Abstract

Small and Medium Enterprises (SMEs) are vital to Tanzania’s economy, yet they face persistent growth constraints including limited technological adoption, weak collaboration, and fragmented institutional linkages. Cluster Development Initiatives (CDIs) have been promoted as a mechanism to enhance SME competitiveness through agglomeration and resource sharing. However, empirical evidence on their impact on non-financial performance remains underexplored, particularly in sub-Saharan Africa. This study addresses a critical gap in the literature by investigating whether and how CDIs influence the non-financial dimensions of SME performance, specifically technology use, intra-cluster collaboration, and external linkages, amidst significant regional disparities in Tanzania. Using a quasi-experimental design, we collected primary data from 308 SMEs across three regions (Singida, Mbeya, Morogoro). A Difference-in-Differences (DID) model was employed to compare SMEs within CDIs (treatment) with those outside (control). Mixed methods, including surveys, interviews, and focus groups, were integrated to capture both quantitative and qualitative insights. CDIs significantly improved non-financial performance, though effects varied regionally. Morogoro showed the strongest gains in technology (DID=2.666, p<0.01) and collaboration (DID=10.58, p<0.01). In contrast, Singida and Mbeya exhibited limited technological progress (DID=1.281 and 0.352, respectively). Linkages improved significantly in Morogoro (DID=6.035, p<0.01) and Singida (DID=5.501, p<0.01), but not in Mbeya’s sunflower oil cluster. The findings highlight that CDIs can foster SME upgrading, but their effectiveness is moderated by regional infrastructure, institutional engagement, and cluster governance. Where physical proximity, shared facilities, and stakeholder coordination were present, as in Morogoro, performance improved markedly. Elsewhere, structural and logistical barriers diluted CDI impact. CDIs positively affect non-financial SME performance, yet outcomes are uneven and context dependent. Success hinges not only on cluster formation but on enabling ecosystems that address local constraints.