CFEM in practice: who pays, how much, and where it goes

The Financial Compensation for Mineral Exploration (CFEM) constitutes the primary mechanism of consideration for the use of mineral resources in Brazil, levied on the gross revenue from the commercialization of mineral substances. The nature of this charge is a pecuniary consideration for the economic use of the Union's mineral assets, and its settlement is mandatory for all holders of mining rights who initiate the mining phase. Understanding the calculation mechanics, the variations in rates by substance, and the criteria for geographic distribution is essential for structuring cash flows in mining projects and for the correct assessment of regulatory liabilities.

What the CFEM is and what it is levied on#

The CFEM is a pecuniary obligation owed by the holder of mineral rights to the Union, due to the exploration of mineral resources within national territory. The taxable event is the departure of the mineral product from the mining establishment, which occurs at the moment of the first sale or upon the transfer of the mineral asset between establishments of the same holder. Legislation defines that the obligation arises independently of the operation's profitability, being a charge on the gross revenue derived from the activity, functioning as a direct operational cost that must be provisioned from the financial planning phase.

The scope of the CFEM extends to all commercialization of mineral substances, including cases of internal consumption or industrial transformation by the titleholder. In these specific situations, the calculation base is defined by legislation to mirror the market value, preventing tax avoidance and ensuring that the return due to society for the exhaustion of the natural resource is equitably captured. The management of this obligation is centralized by the National Mining Agency (ANM), which holds the competence to inspect, collect, and manage the revenue, using mandatory electronic declaration systems to ensure compliance.

Rates by substance: from 1% to 3.5%#

CFEM rates are stipulated according to the type of mineral substance extracted, varying on a scale that reflects the economic importance and nature of the resource. The spectrum of rates begins at 1% for substances intended for immediate use in civil construction, such as sand, gravel, and crushed stone, and reaches the 3.5% threshold for iron ore, which historically represents the largest share of total revenue in the country. This differentiation seeks a balance between the tax burden and the economic viability of exploration for different commodities.

For high-value-added mineral substances, such as gold, the rate is fixed at 1.5%, while for substances such as bauxite, copper, manganese, and niobium, the levy is 3%. Other mineral substances not specified in the previous categories have a residual rate of 2%. It is imperative that M&A executives and technical analysts correctly identify the product's classification at the time of formulating the financial model, as classification errors can generate significant administrative contingencies, fines, and default interest due to under-reporting of the tax owed.

How the base is calculated: gross revenue minus commercialization taxes#

The calculation of the CFEM incidence base is determined by the gross revenue from the sale of the mineral product, obtained after the deduction of taxes levied on commercialization, specifically the Tax on Circulation of Goods and Services (ICMS), the Tax on Industrialized Products (IPI), and PIS/COFINS-Importation. It is fundamental to note that "gross revenue" for CFEM purposes comprises the total value of the sales operation, and no deduction of operational costs, financial expenses, or other production charges is permitted. The legislator's objective was to keep the base linked to the commodity's market price at the time of the transaction.

In situations where no sale to third parties occurs — such as in the internal use of ore in industrial transformation processes — the calculation base is composed of the reference value set by the ANM. This value is determined based on the market price of the ore or similar product. In export scenarios, the calculation must observe the price parity practiced in the international market, adjusted for the quality conditions of the exported product. Ignoring reference price calculation standards or making unauthorized deductions from the calculation base exposes the holder to inspection processes that result in retroactive assessments based on the difference between the declared value and the amount effectively due.

Where the money goes: municipalities, states, ANM, and funds#

CFEM revenue is not entirely appropriated by the National Treasury, being distributed according to legal criteria among the federative entities affected by the mining activity. The largest share, 60%, is allocated to the producing municipality. Another 15% is transferred to the state where the extraction occurs, and 15% to municipalities affected by the activity (even without being the direct producer). The remaining 10% is divided between the ANM itself (7%), CETEM (1.8%), and the FNDCT (1%), with a 0.2% fraction for IBAMA — a dispersion that reflects the cost of inspection and mineral research that the CFEM itself finances.

In a hypothetical situation, consider a holder of mineral rights who ignores the obligation to correctly declare production and revenue in a border municipality. If production is underreported or if there is an error in the geographic indication of the extraction in the ANM system, the holder may be subject to cross-auditing. In addition to the risk of sanctions, this generates an administrative dispute with local governments, which lose revenue, and with the ANM, which requires collection with the appropriate late payment interest, creating a situation of legal instability that can stall new mining requests or assignment of rights.

What this represented in 2025, nationwide in Brazil#

The scenario of mineral revenue in 2025 demonstrates the economic relevance of the CFEM for the Brazilian fiscal balance, with the total amount collected reaching R$ 7.91 billion. This value represents an increase of 6.3% compared to the performance recorded in the previous year. This global amount reflects both stability in mineral commodity production and efficiency in capturing values on large-scale exports, demonstrating that the sector maintains a constant participation in the generation of revenue for federated entities and regulatory agencies.

The analysis of this amount shows that Brazilian mining operates under a scale that requires regulatory predictability, given the volume of resources moved through this charge. The growth trend, albeit moderate, signals that, regardless of the volatility of international commodity prices, the cash flow of mineral rights holders remains subject to a royalty regime whose normative adherence is monitored by increasingly sophisticated data control technologies. For investors, the total amount collected in 2025 serves as a market metric regarding the intensity of mineral activity in operation in the country.

What a financial model needs to consider regarding the CFEM#

To ensure that a mining project's financial model adequately reflects risk and cash flow, it is necessary to integrate variables that go beyond the simple calculation of the rate on revenue. Precision in projection requires an understanding of market fluctuations and strict compliance with the tax deduction criteria defined by the ANM, at the risk of significant distortions in net present value (NPV) indicators.

1. Correct classification of the mineral substance according to the current rate table.
2. Exclusive deduction of authorized taxes (ICMS, IPI, PIS/COFINS) for the calculation base.
3. Provisioning of market price variation scenarios for the final product.
4. Inclusion of administrative costs for accounting management and reporting to the ANM.
5. Verification of the exact geographic location of the extraction point for the calculation of transfer portions to municipalities.
6. Constant updating regarding ANM normative resolutions on reference value for exports.
7. Periodic auditing of declared data to mitigate risks of assessments from subsequent inspections.

The rigorous integration of these control points ensures that the CFEM is treated not as an uncertain cost, but as a predictable element of the project's capital structure. Continuous compliance, from the exploration stage to mine closure, is the determining factor for the holder's legal security, consolidating the transparency necessary to maintain the social and regulatory license essential to the longevity of mineral operations in the global scenario.

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