Portuguese 
English 
Spanish 
3 min of reading 
0 comments 
Recent injunction alters tax rules, reinforces predictability and may change financial planning for oil and gas sector companies
A judicial decision with significant tax impact was recently issued in Brazil, attracting the attention of the business sector. In March 2026, according to the understanding of the Federal Court, the automatic increase of the Corporate Income Tax (IRPJ) and the Social Contribution on Net Profit (CSLL) for companies under the presumed profit regime was suspended.
This measure, therefore, reignites the debate on legal certainty and tax predictability, especially in strategic sectors such as oil and gas. Furthermore, the decision may directly affect companies operating at various stages of the production chain.
Legal investigation reinforces tax predictability in the sector
The injunction initially prevents the immediate application of changes that could raise the tax burden without an adaptation period. In this context, companies begin to operate with greater financial predictability.
-
Brava Energia begins drilling in Papa-Terra and Atlanta and could change the game by reducing costs in oil while increasing production and strengthening competitiveness in the offshore market.
-
Petrobras surprises the world again by announcing a new discovery in the pre-salt with excellent quality oil.
-
Offshore industrial demand in Macaé skyrockets with the recovery of oil and gas and could grow by up to 396% by 2026 in the Campos Basin.
-
Offshore industrial demand in Macaé surges with the recovery of oil and gas and could grow by up to 396% by 2026 in the Campos Basin.
According to Cristiano Aguiar, tax lawyer and founding partner of Vieira Aguiar Advogados, the measure avoids abrupt impacts. According to him, companies in the oil and gas chain work with complex contracts and long-term planning. Thus, sudden tax changes can alter operational costs and compromise financial forecasts.
Service companies in the oil and gas sector are directly impacted
The presumed profit regime, in turn, is widely adopted by service providers in the sector. Among them, the following stand out:
- Engineering and industrial maintenance companies
- Offshore logistics operators
- Specialized technical consultancies
- Suppliers for platforms and operational bases
Thus, any change in taxation tends to directly impact these activities. Consequently, the effects may extend throughout the entire production chain.
Taxation may apply to profits that do not reflect reality
The central point of the discussion involves the tax calculation base. When the presumed percentages automatically increase, the taxable base also grows.
However, this occurs regardless of the actual profit obtained by companies. Thus, there may be taxation on results that do not correspond to the financial reality.
According to Cristiano Aguiar, this scenario may result in taxation of fictitious results. In other words, companies may be taxed even without an actual increase in profit.
Operational impacts affect cash flow and long-term contracts
Experts, at the same time, warn of significant impacts on the functioning of companies. Companies in the sector usually operate with medium and long-term contracts, in addition to adjusted margins and high operational costs.
In this scenario, any unexpected increase in the tax burden can generate important consequences. Among them, the following stand out:
- Review of investments
- Contract renegotiation
- Possible cost pass-through to the market
Therefore, tax predictability becomes essential for the financial stability of these companies.
Presumed profit is recognized as a legal regime and not a tax benefit
Another relevant point of the decision involves the nature of presumed profit. The understanding reinforces that the regime should not be treated as a tax benefit.
In practice, it is a legal model provided for in Brazilian tax legislation. When classified as a benefit, it opens the door for unilateral changes. Thus, the decision strengthens the need for normative stability and enhances the legal certainty of companies.
Decision may open new judicial debates in Brazil
The injunction, finally, may encourage new discussions in the Judiciary, especially in strategic sectors such as oil and gas. Furthermore, experts point out that the decision may influence future debates on corporate income taxation.
Thus, the tax scenario remains under analysis, while companies and investors closely monitor the developments of this decision and assess possible impacts on their strategies.
In light of this context, how should the oil and gas sector prepare for possible future changes in corporate taxation?
Seja o primeiro a reagir!