Comparative Analysis of Tax Incentives on SME Growth Across Regions

Thesis Abstract

This study investigates how region-specific tax incentive regimes influence the growth trajectories of small and medium-sized enterprises (SMEs) in diversified economic contexts, addressing the persistent gap between policy design and firm-level outcomes. Despite widespread adoption of tax-based support for SME development, evidence on cross-regional effectiveness remains fragmented, with mixed implications for firm performance, resilience, and job creation. The aim is to compare the impact of tax incentives on SME growth across three categorically distinct regions, examining differential effects by firm age, sector, and scale, and to unpack the mechanisms through which tax relief translates into measurable growth outcomes. Specific objectives are (i) to quantify the relationship between tax incentive generosity and SMEs’ revenue growth, employment growth, and capital investment; (ii) to evaluate whether regional tax policy attributes (e.g., rate reductions, tax holidays, super deductions) differentially affect early-stage versus mature SMEs; (iii) to test for heterogeneity in effects across manufacturing, services, and technology-intensive sectors; (iv) to identify mediating channels such as access to credit, cash flow stability, and investment in productivity-enhancing assets; and (v) to provide policy guidance on harmonizing tax incentives to maximize regional SME growth while maintaining fiscal sustainability. The methodological approach adopts a cross-regional comparative design. The population comprises formally registered SMEs with annual turnover below 50 million USD operating in three diverse regions over the past five years. A stratified random sample of 1,200 SMEs (400 per region) is selected, ensuring proportional representation by sector (manufacturing, services, technology) and firm age (1–3 years, 4–7 years, 8–12 years, 13+ years). Data are collected through a mixed-method instrument a structured firm survey capturing tax incentive exposure, financial performance, investment activity, and financing conditions; and semi-structured interviews with regional tax authorities and SME owners to elicit contextual policy implementation details. Financial data are corroborated with regional tax records and audited financial statements where accessible. The theoretical framework integrates the Burns and Stalker model of mechanistic vs organic structures with the Agency Theory of tax policy compliance, supplemented by the Resource-Based View to explain how tax relief translates into distinct competitive advantages. Analytical procedures include multivariate regression analyses to estimate the association between tax incentive variables (effective tax rate reductions, duration of incentives, and presence of targeted exemptions) and growth indicators (compound annual growth rate of revenue, employment, and fixed capital formation) while controlling for firm size, sector, region, and macroeconomic shocks. Hierarchical linear modeling (HLM) is employed to account for clustering at regional and sectoral levels. Mediation analysis tests whether cash flow improvements and access to credit mediate the tax-growth relationship. Subgroup analyses examine variations by region, sector, and firm age, and robustness checks employ propensity score matching to address potential selection bias. Qualitative data from interviews are analyzed using thematic analysis to capture policy design nuances, administrative friction, and perceived effectiveness, with triangulation to reinforce findings. Key expected findings include (i) tax incentives positively correlate with SME growth metrics, with larger effects in technology-intensive and younger firms; (ii) the magnitude of impact varies by regional policy design, with incentive complexity and administrative burden dampening overall effectiveness; (iii) cash flow stabilization and improved access to credit emerge as significant mediators; and (iv) there is evidence of diminishing returns beyond a threshold of incentive generosity, underscoring the importance of fiscal discipline. The study contributes to knowledge by providing rigorous cross-regional evidence on how tax policy instruments shape SME growth, integrating policy design considerations with firm-level performance within a coherent theoretical framework. It offers actionable recommendations for policymakers to calibrate tax incentives, streamline administration, and tailor programs to sectoral needs and firm life cycles, thereby enhancing SME growth without compromising fiscal integrity. The conclusion emphasizes a balanced, evidence-based approach to regional tax policy that aligns incentive design with measurable growth outcomes and long-run competitiveness.