Article

Strategy

Financial Management

Tax Management

February 10, 2023

Simulation of tax regimes: Simples Nacional x Presumed Profit

DOI: 10.22167/2675-6528-20230007
E&S 2023,4: e20230007

Manuella Brandl Barbosa de Freitas e Matheus da Costa Gomes

In the current context of the country, with enormous competitiveness among companies, seeking cost management through tax planning is of extreme relevance for an organization’s survival[1], especially when facing one of the highest tax burdens by companies in the world, around 34%[2], with little return for the population.

The Doing Business 2019 report, from the World Bank (“The World Bank”)[3], regarding the total taxes and contributions collected by companies as a percentage of profit, shows Brazil among the last placed, with 65.1% – three times higher than that verified in Canada – 20.5%, with the latter being the best placed in the ranking. All this causes Brazil to lose competitiveness against other economies, due to the so-called “custo Brasil” (Brazil cost) and enormous bureaucracy. Another indicator that demonstrates this difficulty faced in Brazil refers to the ease of doing business; Brazil is in 109th position out of 190 countries[3].

From this perspective, tax management deserves special attention, due to the final impact it can have on the company’s profitability and its perpetuity capacity, hence the importance of tax planning so that they adapt their costs, in order not to practice prices considered above acceptable by consumers[4].

Thus, this study aimed to investigate the best tax system for a small beverage company located in Boa Vista/RR. Currently, the tax system for small companies with revenue of up to R$ 4.8 million, classified under Simples Nacional, is used. Given that it has been in the market for a long time and aims to generate higher profits, it was decided to conduct an analysis demonstrating which classification used is the most economically advantageous for it to achieve better economic results. Especially due to the fact that it operates with the sale of alcoholic beverages, which have a high tax burden (on average – 40% is paid solely from the Tax Substitution of the Tax on Circulation of Goods and Services – ICMS), in addition to other charges, and none of this is credited, because the system used does not provide for ICMS credits.

Thus, this study aimed for a comparative tax analysis of the framework in use – Simples Nacional – with that of Presumed Profit, because both use the same calculation basis, i.e., revenues, thus making it possible to identify greater financial gains for this small company to prosper. With this, it will be possible to carry out tax avoidance – tax planning (through simulation) – for the next fiscal years, in order to reduce costs (reduction of the tax burden) and improve the profitability of the business.

Initially, the tax systems: Simples Nacional and Lucro Presumido were discussed, their advantages, their disadvantages, and the calculations used for each of them, in order to obtain a comparative analysis.

According to Complementary Law 123, of 2006[5], Simples Nacional may be applicable to Microenterprises (ME) and Small Businesses (EPP). As of January 1, 2018, the proportional limits for ME and EPP are R$ 30 thousand and R$ 400 thousand, respectively, multiplied by the number of months between the start of the activity and the end of the respective calendar year, with fractions of months considered as a full month.

Among the advantages of using Simples Nacional is the collection of various taxes in a single document – Documento de Arrecadação do Simples Nacional (DAS). The taxes included are: Corporate Income Tax (IRPJ); Tax on Industrialized Products (IPI); Social Contribution on Net Profit (CSLL); Social Security Financing Contribution [COFINS]; Contribution for the Social Integration Program and the Public Servant Asset Formation Program (PIS/Pasep); Social Security Contribution for Employers (CPP); Tax on Operations Related to the Circulation of Goods and on Interstate and Intermunicipal Transportation and Communication Services (ICMS); Tax on Services of Any Nature (ISS). Being exempt from other federal contributions, such as Sesc, Sesi, Senai, Senac, Sebrae, and the education salary.

The tax rates of Simples Nacional range from 4% to 33% depending on the gross revenue earned in the last 12 months and the annex used by economic category (there are 5 annexes/tables) and 6 distinct tax rate brackets, each with a value to be deducted for the final calculation, as stated in Complementary Law 123 of 2006[5].

The calculation of this tax to be collected, the DAS, is done with the accumulated gross revenue of the last 12 months (prior to the calculation period) multiplied by the rate corresponding to the annual revenue bracket (Table 1), minus the amount to be deducted (per bracket), all divided by the accumulated gross revenue of the last 12 months. With this, the effective rate is found, and thus, this found rate is multiplied by the gross revenue of the period to be calculated, finding the amount of tax to be paid for the month.

Table 1. Table of rates used by Simples Nacional – Commerce

BandTax rateDeductible AmountGross Revenue in 12 months
— % —————————— BRL ——————————
1st4,00–Up to BRL 180,000.00
2nd7,305.940,00From 180,000.01 to 360,000.00
3rd9,5013.860,00From 360,000.01 to 720,000.00
4th10,7022.500,00From 720,000.01 to 1,800,000.00
5th14,3087.300,00From 1,800,000.01 to 3,600,000.00
6th19,00378.000,00From 3,600,000.01 to 4,800,000.00

Source: Brazil[5]

Table 2, presented below, shows the gross revenue of this company for the months of September 2020 to August 2021 and the respective amounts paid regarding the DAS. These values were the object of study for the simulations regarding the Presumed Profit.

From this data, it was possible to measure the DAS collected in September 2021, based on the annual invoicing which amounted to R$ 1,299,873.83 (Table 2). After this step, the annex corresponding to the sector of activity (commerce in this case) was consulted, it was verified which bracket the revenue fell into, the tax rate and deductible amount were identified. In this case, it corresponded to the fourth bracket with a tax rate of 10.7% and a deductible amount of R$ 22,500. This done, the effective tax rate was calculated by multiplying the annual revenue by 10.7% minus the deduction of R$ 22,500, all divided by the annual revenue. With this calculation, the effective tax rate of 8.97% was reached. Based on this tax rate, it was possible to calculate the amount of tax to be paid in September 2021, by multiplying the monthly invoicing for September by this calculated tax rate.

Table 2. Revenue of the company under study versus the amount paid in Taxes by the Simples Nacional

PeriodTotal sales (vendas)/ Invoicing (emissão de doc)Simples Nacional
——————– BRL ———————–
SEP.2020147.088,009.807,96
OCT.202092.899,805.988,01
NOV.2020204.966,8513.566,87
DEC.2020174.878,9511.162,23
JAN.202157.439,004.259,90
FEB.202147.643,802.895,38
MAR.2021113.310,557.672,95
APR.2021173.444,8011.133,65
MAY.202184.445,405.244,07
JUNE.202164.084,704.161,63
JUL.202152.787,983.582,30
AUG.202186.884,005.575,44
Sum1.299.873,8385.050,39
Average108.322,827.087,53
Corresponding tax rate =7.087,53/108.322,826,54%

Source: Elaborated by the author

Unlike the Simples Nacional, where only one monthly obligation (DAS) is submitted, in Presumed Profit there is more bureaucracy, as taxes are paid separately and the Declaration of Federal Tax Debits and Credits (DCTF), the Digital Fiscal Record (EFD), and the Digital Accounting Record (ECD) must be submitted, which must be transmitted annually to the Public Digital Bookkeeping System (SPED).

Among the advantages of presumed profit: if the company’s profit is greater than the exemption percentage, there is savings in taxes and lower rates for PIS and COFINS. The disadvantages are: it is not possible to use the deductions of credits offered by the payment of PIS and COFINS; if the company has a profit margin lower than the presumption margin, it will pay more taxes than it should; service providers have a very high presumption margin, often incompatible with reality, and it can increase the cost of the payroll for those with many employees, due to INSS.

In the case of the Presumed Profit regime, there is the taxation of a presumption of the quarterly gross revenue result for IRPJ and for CSLL, and they can range from 1.6% to 32%, according to the company’s activity[6]. For example, the revenue value of the quarter is multiplied by the CSLL presumption rate, which is 12% for commerce, and from the obtained value, 9% is multiplied, arriving at the CSLL to be paid. After this, the quarterly revenue is calculated multiplied by the IRPJ presumption rate of 15%, with an additional amount of 10% if the quarterly profit exceeds R$ 20 thousand per month, with these two taxes being paid quarterly[6]. Thus, if the quarterly revenue exceeds the presumed R$ 60 thousand, the quarterly revenue found minus R$ 60 thousand must be subtracted, and this obtained value multiplied by 10%, so that the IRPJ will be the sum of the multiplication of these two rates (15% and 10%). In addition to these two taxes, PIS – 0.65% and COFINS – 3% must be paid monthly, according to the cumulative regime.

Regarding the object of study of this article, the average revenue between September 2020 and August 2021 was calculated, reaching the value of R$ 108,322.82, and the average taxes paid under the Simples Nacional in this period was R$7,087.53 (Table 2).

For the calculation of presumed profit, quarterly revenue was calculated by multiplying the average monthly revenue (R$108,322.82) by 3, obtaining a total of R$324,968.46. Firstly, the quarterly revenue amount was multiplied by the CSLL presumption rate for commerce (12%), totaling R$38,996.22; from this amount, 9% was multiplied, resulting in R$3,509.66 as the amount to be paid for this tax in the quarter. For the IRPJ calculation, quarterly revenue was multiplied by the 8% presumption for commerce, totaling R$25,997.48; from this amount, 15% was multiplied, obtaining R$3,899.62. With this, these two amounts for CSLL and IRPJ were summed, totaling R$7,409.28 for the quarter, which corresponds to R$2,469.76 if paid monthly.

After this, the value of PIS was calculated, being 0.65% multiplied by the average revenue of R$ 108,322.82, reaching the value of R$ 704.10. COFINS represented 3% multiplied by the same average, totaling R$ 3,249.68. Thus, the sum of monthly taxes (PIS and COFINS) plus the value of IRPJ and CSLL (if they were paid monthly – R$ 3,953.78) would total R$ 6,423.54, this value being lower than the average paid annually under the tax system – Simples Nacional (when INSS is not included) (Table 3).

Table 3. Simulation of taxes paid under the Presumed Profit tax system

ParametersValues
BRL
Average revenue108.322,82
Quarterly revenue324.968,46
1) Presumption of CSLL (12%) (324,968.46 * 12%)38.996,22
Social Contribution on Net Income (9%) (38,996.22*9%)3.509,66
2) PRESUMPTION OF CORPORATE INCOME TAX (8%) (324,968.46 * 8%)25.997,48
IRPJ (15%) (324,968.46 * 15%)3.899,62
TOTAL OF IRPJ AND CSLL IN THE QUARTER (3,509.66 + 3,899.62)7.409,28
MONTHLY IRPJ AND CSLL (7.409.28 / 3)2.469,76
PIS 0.65% (108,322.82 * 0.65%)704,10
COFINS 3% (108,322.82 * 3%)3.249,68
TOTAL MONTHLY (704.10 + 3249.68)3.953,78
IRPJ AND CSLL (MONTHLY) + PIS + COFINS6.423,54

Source: Elaborated by the author

However, in addition to these taxes, the INSS on the payroll must be calculated at a rate of 20% (which does not need to be done in the Simples Nacional, as it is already included in the DAS). Thus, R$ 4054.83 (sum of payroll) multiplied by 20% – Employer INSS – is obtained, resulting in R$ 810.87, plus the multiplication of the Environmental Work Risks (RAT) by the Accident Prevention Factor (FAP), with the former being 1% (due to the low degree of work risk arising from the activity under analysis – commerce) multiplied by 0.5 (from the current year 2021 – as consulted on the Data Prev website[7]), reaching the value of 0.005, which added to R$ 810.87 results in R$ 810.88. This value divided by the average revenue – R$ 108,322.82, results in an effective rate of 0.75% – INSS rate on payroll -. With this, the average of taxes by presumed profit added to the INSS amounted to R$ 7,234.42 (the sum of R$ 6,423.54 + R$ 810.88), which is higher than the average of the Simples Nacional in monetary values, which was R$ 7,087.53 (Table 4).

Table 4. INSS Calculation – Presumed Profit

PayrollBRL 4,054.83
20% rate – Employer’s INSS + (RAT*FAP)BRL 810.88
Total tax value +INSSBRL 7,234.42
Average tax value * 12BRL 86,813.04
Tax rate (=7,234.42/108,322.82)6,68%

Source: Elaborated by the author

Given this scenario, it is observed that the use of the Simples Nacional regime is still advantageous for this company, as according to the analyzed year, the average taxes paid under Simples Nacional was 6.54% (effective rate – average DAS for the period under analysis of R$ 7,087.53 divided by the average monthly revenue of R$ 108,322.82), while under Presumed Profit, an average of 6.68% in taxes on revenue was calculated (which is R$ 7,234.42 – projection of what would be paid under Presumed Profit divided by the average monthly revenue for the period of R$ 108,322.82). In part, this larger difference was due to INSS taxes on payroll. A small difference of only 2.07% between the average taxes paid between one regime and the other.

The disadvantage of the Simples Nacional regime is that companies cannot credit the ICMS levied on the acquisition of goods, as stated in article 23 of Complementary Law 123[5], a fact that may encourage the company to switch to the Presumed Profit regime, which would require new tax planning, being the subject of a future feasibility study.

This work aimed to verify the feasibility of changing the tax system, in order to increase this company’s profitability and gain greater competitiveness through a descriptive approach and quantitative analysis of this company’s revenue. With this, it was verified that it is still less burdensome for this company to remain in the Simples Nacional, due to the high tax burden that would be paid more in social security contributions, a reason that increased the total taxes in the Presumed Profit regime, as shown in the presented simulation.

If there were none, the change would be advantageous, as it would result in a 9.36% reduction in the average monthly tax paid (R$ 6,423.54 – average monthly taxes under the Presumed Profit regime without the Employer’s Social Security Contribution, while under Simples Nacional – the monthly average was R$ 7,087.53).

Thus, the importance of tax planning is concluded, in order to ensure that the least burdensome modality is being used for the company to achieve greater gains. Despite the high cost of tax planning, especially for small businesses, it is important to conduct this study to ensure that the company is in the tax system that brings greater financial viability. The importance of calculating potential ICMS credits that may be credited was verified, through a more in-depth study, in case of a change to Presumed Profit, which may be the subject of future work.

References

[1] Silva L.T. Planejamento tributário: Aplicabilidade como instrumento financeiro de redução dos custos organizacionais. Revista Eletrônica de Graduação do UNIVEM – REGRAD. 2019; 12(1): 110-128.

[2] Confederação Nacional da Indústria (CNI) (Brasília). Competitividade Brasil 2018-2019: comparação com países selecionados. Brasília: CNI; 2019. 116 p.  Disponível em: <https://static.portaldaindustria.com.br/media/filer_public/e2/9d/e29da7d0-7e5d-4e6c-baa8-60326243f44f/competitividadebrasil_2018-2019.pdf>.

[3] The World Bank (Washington). Doing Business 2019: Training for Reform. Washington: The World Bank; 2019. 302 p. Disponível em: <https://www.doingbusiness.org/content/dam/doingBusiness/media/Annual-Reports/English/DB2019-report_web-version.pdf>.

[4] Alberti X.R. Comparativo Tributário: Simples Nacional, Lucro Presumido e Lucro Real. REFAF. 2013; 2(2).

[5] Presidência da República (Brasil). Lei Complementar 123, de 14 de dezembro de 2006. Institui o Estatuto Nacional da Microempresa e da Empresa de Pequeno Porte. Brasília, DF: 2006.

[6] Receita Federal. Capítulo XIII – IRPJ – Lucro Presumido 2021. Brasil: Ministério da Economia; 2021. Disponível em: <https://www.gov.br/receitafederal/pt-br/assuntos/orientacao-tributaria/declaracoes-e-demonstrativos/ecf/perguntas-e-respostas-pessoa-juridica-2021-arquivos/capitulo-xiii-irpj-lucro-presumido-2021.pdf>.

[7] DataPrev.  Acesso à Informação. Brasília: Ministério do Trabalho e Previdência – Secretaria de Previdência Brasil; 2022. Disponível em: <https: www.dataprev.gov.br/acesso-informacao>.

Como citar

Freitas M.B.B.; Gomes M.C. Simulação de regimes tributários: Simples Nacional x Lucro Presumido. Revista E&S. 2023; 4: e20230007.

Sobre os autores

Manuella Brandl Barbosa de Freitas, Bacharela em Ciências Econômicas, Especialista em Finanças e Controladoria, Fortaleza, CE, Brasil

Matheus da Costa Gomes, Doutor em Controladoria e Contabilidade, Professor de Ensino Superior, Ribeirão Preto, SP, Brasil.

Link para download: https://cms.revistaes.com.br/wp-content/uploads/2023/02/ES_23007.pdf

You may also like

Tax Management

October 02, 2026

Utilization of PIS and COFINS Credits on Freight in the Agribusiness Sector

The Brazilian agribusiness, a strategic sector of the economy, faces tax challenges related to the utilization of PIS and COFINS credits. The study described the potential for utilizing PIS and COFINS credits on the hiring of freight for the transfer of goods between establishments of the same taxpayer, in the specific context of the agricultural input sector, considering the impacts on tax management, tax planning, and fiscal risk mitigation. A qualitative, applied, and exploratory approach was adopted, through a case study in an agro-industrial company, and doctrinal and jurisprudential currents were analyzed, applying the “subtraction test” of the Superior Court of Justice. The results indicated that transfer freight, in the agricultural input sector, is an essential and relevant element for economic activity, not being configured as a mere administrative act, as its absence makes commercialization and revenue generation unfeasible. It was concluded that the classification of freight as an input is legitimate, requiring tax management to adopt technical criteria, robust documentation, and prudent measurement of fiscal risk to optimize efficiency and strengthen governance, especially in light of recent legislative changes and the transition to the Contribution on Goods and Services (CBS).

Keywords: Agribusiness; Tax credits; Transfer freight; PIS/COFINS; Subtraction test.

Tax Management

October 02, 2026

Tax reform and its accounting impacts on movable asset rental companies

The Brazilian tax system was characterized by high complexity, especially for companies under the “Lucro Real” (Real Profit) regime, which justified the relevance of analyzing the impacts of the Tax Reform on accounting practices. The effects of the Tax Reform on the accounting practices of companies renting movable assets were analyzed, focusing on tax calculation, accounting controls, and cash flow. The research was applied in nature, with a qualitative approach and descriptive character. It was developed through documentary analysis of accounting and fiscal data, as well as a comparison between the current tax model and the proposed one. The results showed that the replacement of consumption taxes with a value-added-based model tends to reduce operational complexity, increase the utilization of tax credits, and enhance transparency in tax calculation. Relevant impacts were identified in the cost structure, in the formation of accounting results, and in cash flow management, especially during the transition period. The need for adaptation of accounting systems and internal company processes was also observed. It was concluded that the Tax Reform represents a significant structural change, requiring greater organization and adaptability from companies, while also offering opportunities for improvement in accounting and tax management.

Keywords: Tax accounting; Cash flow; Real profit; Tax Reform; Taxation.

Tax Management

October 02, 2026

Tax planning applied to medical activities

This study compared the taxation of medical activities carried out by individuals and by legal entities subject to Simples Nacional, Presumptive Profit, or organized as a single-professional simple partnership. The objective was to compare the monthly amount of taxes and payroll charges under different combinations of practice type, corporate structure, and tax regime applicable to medical activities. To this end, numerical simulations were performed with hypothetical data, considering CNAE 8630-5/03 for outpatient medical activity restricted to consultations, with monthly billings from R$10,000.00 to R$400,000.00. The following were analyzed: Simples Nacional (Annexes III and V), Presumptive Profit (with and without hospital equivalence), simple partnership (fixed ISSQN), and autonomous individuals, including parameterized payroll charges such as Employer’s Social Security Contribution, RAT, third-party contributions, and FGTS. The results showed that the inclusion of these charges altered the ranking of the alternatives. Simples Nacional with Factor R showed an advantage in the initial and intermediate ranges, while Presumptive Profit with hospital equivalence was competitive at higher billings. Certain legal entity configurations presented a lower amount of taxes and charges than individuals. It was concluded that medical tax planning requires compatibility between billing, personnel, corporate structure, and legal requirements, with the results being illustrative and not representing the total operational cost.

Keywords: Medical activity; Hospital equivalence; Presumptive Profit; Tax planning; Simples Nacional.

Tax Management

September 30, 2026

Impacts of the tax reform on vehicle dealerships: challenges of the transition to IBS/CBS

Considering the complexity of the Brazilian tax system and the changes brought about by the Tax Reform, the research analyzed the practical and financial impacts of Constitutional Amendment No. 132/2023 and Complementary Law No. 214/2025 on the vehicle dealerships sector, notably regarding the transition from the tax substitution and single-phase regimes to the new IBS and CBS taxation model. The study was developed through an empirical case study, with a qualitative and quantitative approach, using fiscal, accounting, and managerial data from a vehicle dealership in the State of Tocantins, with a branch in the State of Goiás, for the period from January to November 2025. Data from EFD ICMS/IPI, SPED Contribuições, XML files of invoices, managerial reports, and the balance sheet were used, processed with the aid of specialized tools. The results showed that 86% of acquisitions for resale were subject to ICMS-ST and 60% to the single-phase PIS and COFINS regime, evidencing anticipation of financial burden and credit restriction. In a sensitivity analysis with three scenarios, the Selective Tax increased the cost of new vehicles by up to 21.01% and compressed the margin by up to 1.67 percentage points. In the used vehicle segment, profitability was conditioned by the origin of acquisitions and inventory turnover, with a reduction in tax burden and a 7.6% increase in gross profit. The study highlighted the strategic relevance of presumptive credit on opening inventory and the reassessment of the relationship with suppliers opting for Simples Nacional. The applicability of the results was confirmed by the studied institution, which established an internal Tax Reform management committee, with integrated action between the accounting, fiscal, commercial, purchasing, and information technology areas.

Keywords: Vehicle dealerships; Presumptive credits; Selective Tax; Operating margin; Tax Reform.

Tax Management

September 30, 2026

The offsetting of withholding income tax (IRRF) on service exports is limited by operational and documentary hurdles

The tax credit for withholding income tax (IRRF) on service exports represents a significant challenge in international taxation for Brazilian companies. The diversity of foreign tax systems, the lack of documentary standardization, and the rigorous demands of national legislation hinder credit recognition. The study aimed to analyze the legal, documentary, and operational challenges related to the offsetting of IRRF paid abroad on service exports, considering Brazilian legislation, international treaties, and administrative jurisprudence from CARF. A qualitative, exploratory, and analytical approach was used, through bibliographic review, normative examination, jurisprudence investigation, and a case study in a multinational company. Company X, with service exports totaling R$ 26,647,021.30 in 2025 to 32 countries, was analyzed. The results indicated that the main obstacles lie not in the absence of a legal basis, but in the asymmetry between Brazilian formal requirements, such as official documents, sworn translations, and apostilles, and the operational reality of withholdings. This situation generated a negative IRPJ balance of R$ 10,737,400.49 in 2025, highlighting the economic risk of disallowance. It was concluded that effective IRRF offsetting requires structured tax governance, documentary standardization, and integration between the involved units and areas.

Keywords: Tax offsetting; Service exports; Tax governance; IRRF; International treaties.

Tax Management

September 30, 2026

Structural tax reforms: French experience and implications for the Brazilian system

The taxation of high-value assets is an instrument for promoting fiscal justice, the structuring of which requires a coherent normative and institutional arrangement. The study assessed the contribution of high-value taxation to more equitable economic development and analyzed whether mechanisms for taxing large fortunes or high-value assets constitute a legally viable and economically effective path to fiscal and social justice in Brazil. The research adopted a qualitative, theoretical-descriptive, and analytical-comparative approach, focusing on Brazil and France, using bibliographical, documentary, and macroeconomic and microeconomic indicators. It was observed that the French experience with taxes on large fortunes, such as the ISF and IFI, did not cause major shifts in aggregate macroeconomic indicators, but revealed redistributive potential when supported by robust administrative capacity and international cooperation. In the Brazilian context, the low effective intensity of wealth taxation contributed to the maintenance of wealth concentration. It was concluded that the effectiveness of high-value taxation for fiscal justice depends not only on the creation of new taxes, but on strengthening progressivity, tax administration, adequate measurement of the taxable base, enforcement efficiency, and international cooperation, essential elements for consolidating the Brazilian tax system on more equitable grounds.

Keywords: Fiscal justice; Tax progressivity; Structural tax reform; Taxation of high-value assets; Taxation of large fortunes.

Tax Management

September 30, 2026

Environmental and tax management actions: profile of the largest Brazilian construction companies based on sustainability reports

The profile of the largest Brazilian construction companies, ranked in the 2025 ranking, was analyzed for their environmental and tax management actions, based on the disclosed sustainability reports. The study was exploratory and used secondary data from public official documents. A systematic search was conducted for construction companies that published at least one sustainability report in the last five years, identifying 13 companies from a sample of 100. The results revealed low adherence to the disclosure of tax management actions, such as the Value Added Statement (46.15%), the GRI 207 approach (30.76%), special tax regimes (30.76%), governance and risk management (30.76%), tax compliance and ethics (30.76%), and audits (38.46%). Voluntary adherence to publishing sustainability reports was low, with only 13 out of 100 construction companies disclosing them. However, 100% of the 13 companies that published reports adopted environmental sustainability practices, including waste management (84.61%), energy efficiency (76.92%), water reuse (69.23%), CO2 emission control (61.53%), and biodiversity actions (53.84%). It was concluded that tax transparency is restricted and fragmented, with information often non-standardized or not disclosed by 46.15% of companies. A prioritization in disclosing environmental issues and restriction of tax data was observed, indicating high environmental maturity, moderate standardization of sustainability reports, and the existence of a tax-social connection.

Keywords: Civil Construction; Global Reporting Initiative; Sustainability report.