Tanzania’s Tax Base: Why It Remains Narrow and How to Expand It

The Challenge of a Narrow Tax Base Tanzania’s tax base remains relatively narrow, heavily dependent on formal businesses and salaried workers. This limited scope restricts government revenue, increases public debt, and constrains investment in critical infrastructure and social services. Expanding the tax base is therefore crucial for sustainable economic growth, fiscal stability, and equitable development. Despite improvements in tax policy and digital systems, challenges persist in integrating the informal sector, improving tax compliance, and modernizing collection mechanisms. 1. Heavy Reliance on Formal Businesses The Tanzanian tax system currently depends disproportionately on a small number of formally registered businesses. Less than 15% of businesses are registered, leaving the majority outside the tax net. Compliant businesses bear a disproportionate share of tax obligations, which can discourage entrepreneurship and formalization. Heavy reliance on a narrow tax base increases vulnerability to economic shocks, as revenue falls sharply during downturns affecting formal sectors. Expanding formal business registration is essential to distribute the tax burden more evenly and increase government revenue sustainably. 2. Large Informal Economy Over 80% of Tanzanian workers operate in the informal sector, including market vendors, small retailers, and casual laborers. The informal economy contributes to several fiscal and economic challenges: Revenue loss: Unregistered businesses and workers pay minimal or no taxes. Unregulated markets: Informality limits enforcement of standards, trade regulations, and safety compliance. Low productivity: Informal businesses often operate with limited access to finance, technology, and training, reducing overall economic output. Integrating the informal sector into the tax system requires policies that incentivize registration, reduce compliance costs, and improve access to business support services. 3. Low Tax Morale Tax morale the willingness of citizens to pay taxes is a key determinant of compliance. In Tanzania, low morale is influenced by: Perceptions of corruption: When taxpayers feel funds are mismanaged, voluntary compliance decreases. Limited public service improvements: Citizens are less motivated to pay taxes if they do not see visible benefits in health, education, or infrastructure. Complex compliance procedures: Burdensome processes discourage participation, particularly for small and micro-businesses. Strengthening transparency, accountability, and visible public investment is essential to improving tax morale and voluntary compliance. 4. Limited Property Tax Collection Local governments in Tanzania face challenges in effectively collecting property-related taxes. Key issues include: Inaccurate or outdated valuation systems Low enforcement of development and land rent taxes Underutilization of modern GIS and digital mapping systems Efficient property tax collection can significantly increase local revenue and fund municipal infrastructure projects. Modernizing property records and digitizing assessments are critical steps toward expanding the tax base. 5. Weak Digital Tax Systems Digital systems have improved some aspects of tax collection, such as e-filing for formal businesses. However, gaps remain: Integration with mobile money: Many informal payments remain outside the tax system. SME-focused digital tools: Small businesses still face challenges in complying digitally. Automated data analytics: Limited use of analytics reduces the ability to identify potential taxpayers and detect evasion. Enhanced digital platforms can simplify compliance, reduce administrative costs, and broaden the taxpayer base. 6. How to Expand the Tax Base Expanding Tanzania’s tax base requires a multi-pronged approach: Formalizing micro-businesses: Simplify registration and tax processes to encourage participation. Simplifying startup taxes: Reduce administrative burdens for new entrepreneurs. Strengthening local tax collection: Equip municipalities with training, technology, and enforcement capacity. Modernizing property records: Use GIS and digital mapping to identify taxable assets. Increasing digital tax tools: Expand e-filing, mobile payment integration, and automated reporting. Incentivizing voluntary compliance: Link taxes to visible public services. Reducing reliance on border taxes: Diversify revenue sources to ensure fiscal stability. By combining these measures, Tanzania can broaden its tax base, increase revenues, and fund critical development priorities. Conclusion: Building a Broader, Stronger Tax Base Tanzania’s narrow tax base limits government capacity to invest in infrastructure, education, and social services. Expanding the tax net requires a combination of digital reforms, business formalization, improved property tax collection, and strengthened tax morale. A broader tax base will not only increase revenue but also promote fairness, reduce reliance on debt, and provide the financial foundation needed for sustainable economic growth.