Africa Rethinks Mining Tax Incentives as Critical Minerals Demand Grows

African governments are being urged to reassess tax incentives offered to mining companies as rising demand for critical minerals creates new opportunities to attract investment while strengthening public revenues.

Viola Tarus, policy adviser for tax and extractives at the International Institute for Sustainable Development (IISD), said mining incentives should be more carefully targeted and linked to genuine investment constraints.

Speaking at the African Tax Administration Forum’s 11th ATAF | ATRN Annual Congress in Kigali on September 24, Tarus argued that poorly designed incentives can reduce government revenue without necessarily influencing investment decisions.

She said mining has characteristics that distinguish it from many other sectors. Mineral deposits are fixed geographically, meaning investors cannot simply relocate a commercially viable deposit to another country because of differences in tax rates.

Mining projects also require substantial capital during exploration and development before they begin generating revenue. Tarus said these factors should influence how governments design incentives.

Rather than relying broadly on tax holidays and other measures that simply reduce the overall tax burden, she argued that governments could consider cost-based incentives designed to address specific investment costs or reduce the cost of capital.

The issue has become more significant as global demand increases for minerals such as copper, cobalt, lithium, nickel and rare earths that are important to energy-transition technologies.

Rethinking the Investment Race

Tarus also questioned the practice of African countries competing for mining investment by continually offering more generous tax concessions.

According to her argument, countries can end up reducing their own tax revenues while multinational mining companies benefit from preferential treatment.

Mining agreements can make the problem more difficult to address because incentives incorporated into contracts or legislation may be costly or legally difficult for governments to change later.

Tarus said policymakers should therefore examine the factors that actually determine mining investment before using tax incentives as a primary attraction.

Geological potential remains fundamental, while infrastructure such as roads, electricity and ports can have a major influence on the commercial viability of projects.

For countries seeking to move beyond exporting unprocessed minerals, these considerations are particularly important. Investment in infrastructure and processing capacity could potentially create stronger conditions for value addition than broad tax reductions alone.

Protecting Mineral Revenues

The debate comes as African governments seek to increase domestic resource mobilisation while financing infrastructure, public services and economic development.

Mining can provide substantial government revenues, but extensive tax concessions may reduce the amount collected from the exploitation of finite mineral resources.

Tarus did not call for the complete removal of mining incentives. Instead, she argued that governments should assess whether individual incentives address identifiable investment barriers and whether the resulting economic benefits justify the revenue forgone.

This approach could become increasingly relevant as African countries position themselves as suppliers of critical minerals to global markets.

The continent has significant deposits of several minerals required for the energy transition, creating opportunities to attract investment into exploration, mining, processing and downstream industries.

For tax administrations, the debate also highlights the importance of monitoring tax expenditures and measuring the cost of incentives granted through mining legislation and investment agreements.

As competition for Africa’s critical minerals intensifies, the policy discussion is shifting from simply attracting mining capital to determining how investment terms can support infrastructure, value addition and sustainable public revenues.