Canada’s Mining Taxation Needs to Be Efficient and Simple, Not Riddled With Over-the-Top Incentives
DOI:
https://doi.org/10.55016/d9hd2e47Abstract
Canada has one of the most competitive mining tax systems in the world. For most mining products, the overall tax burden in Canada is lower than in competing jurisdictions, which means that more targeted tax incentives aren’t needed to attract investment. This paper evaluates Canada’s mining-tax system across provinces and compares it with the tax regimes of 27 major mining jurisdictions worldwide, including Australia, Chile, Peru, South Africa, China, the United States and several Latin American and African producers.
The paper recommends several reforms to simplify and modernize Canada’s mining-tax system. These include eliminating or scaling back targeted critical-mineral incentives and exploration tax credits, reducing development deductions under the corporate income tax from 30 to 25 per cent and reforming provincial processing allowances so they exempt only genuine processing income rather than extraction profits. In the exuberance to find critical minerals, incentives have become excessive and poorly administered thereby distorting the allocation of resources in the economy.
Provincial mining taxes should be converted to cash-flow taxes that fully expense capital investments and allow unused deductions to earn interest, following British Columbia’s model. Such reforms would tax economic rents more efficiently while reducing distortions.
Overall, the recommendations would lead to a reduction in the effective tax rates on new investment in non-critical mining from 13.2 per cent to 12.5 percent, averaged across provinces. The effective tax rate on critical mining would increase from 10.2 per cent to 12.5 per cent although the tax burden would fall in Quebec and Alberta with the adoption of a cash flow approach to taxing mining. The policies would make the tax system more neutral across different mining projects while maintaining tax competitiveness for mining projects.
Canada’s mining industry is a major contributor to the national economy, generating $54.7 billion in shipment values in 2024, or about two per cent of GDP. Metallic mining — including copper, gold, iron ore, lithium, nickel, and zinc — accounts for nearly 70 per cent of total mining output. Exploration and development expenditures have also increased in the last 10 years, which shows investor confidence in Canada’s resource sector.
In Canada, provincial governments generally levy profit-based mining taxes rather than revenue-based royalties, while the federal corporate income tax allows deductions for labour, exploration, development, capital investment and provincial mining taxes. Other incentives include accelerated capital cost allowances, provincial investment tax credits and the flow-through share system, which lets companies transfer unused deductions and credits to investors. Recently, the federal government introduced a 30 per cent tax credit for eligible exploration expenditures in critical minerals, financed through flow-through shares.
Although these measures were meant to strengthen investment, Canada’s tax system is already sufficiently competitive. In particular, the new critical-mineral tax credit is unnecessary because Canada’s overall tax burden is already among the lowest internationally. Taxation is not the main barrier; instead, the barriers to mining investment are regulatory delays, permitting uncertainty and project approval. Improving regulatory efficiency, through initiatives such as the federal Building Canada Act, or even better, regulatory reforms would be a more effective policy response than expanding tax preferences.
Canada should pursue tax reform to improve economic efficiency. Minerals are non-renewable resources, so tax policy should neither discourage investment nor artificially encourage extraction through subsidies. Excessive tax preferences risk shifting production from future generations toward marginal projects today, reducing the long-term value of Canada’s resource wealth.
The system also creates distortions by taxing mining more lightly than many other industries and by relying on numerous targeted deductions, credits and special provisions that complicate investment decisions.
Policymakers should focus on regulatory reform and a simpler, more neutral tax system that supports investment while preserving the long-term value of Canada’s mineral resources.
The report was written prior to the announcement by the federal government on September 15th, 2026, that it will expand expensing from 15 per cent to two-thirds of assets. Expensing will enable companies to write off qualifying capital expenditures immediately rather than through time, thereby providing an interest free loan to companies. It will result in an even more favourable treatment of mining in Canada compared to other countries that is shown below. It will also introduce new economic distortions by favouring short-lived compared to long-lived capital, thereby making the mining tax system more non-neutral. This paper suggests a different path should be pursued that maintains competitiveness but reduces economic distortions.
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