v3.26.1
Deferred taxes and contributions (Tables)
 12 Months Ended
Dec. 31, 2025
Notes and other explanatory information [abstract]  
Schedule of deferred taxes
     
  December 31, 2025   December 31, 2024
       
Deferred income tax assets      
Provisions 653,628   839,864
Pension plan obligations – G1 125,200   125,198
Donations of underlying assets on concession agreements 40,764   43,321
Allowance for doubtful accounts 116,431   177,271
Allowance for losses on other accounts receivable 54,426   50,515
Allowance for inventory losses 121,591   127,840
Allowance for losses on works and projects 10,554   57,606
Allowance for losses on write-off of assets 46,790   42,812
Performance Agreements 81,143   74,670
Present value adjustment (PVA) accounts receivable 89,073   100,913
Loss – hedge (Other comprehensive income) -   4,302
Derivative financial instruments in the profit/loss 204,190   3,297
Deferred PIS/Cofins 432,777   -
Others 91,657   75,644
Total deferred tax asset 2,068,224   1,723,253
       
Deferred income tax liabilities      
Temporary difference in the concession of intangible asset (290,128)   (314,641)
Capitalization of borrowing costs (526,275)   (461,362)
Profit on supply to government entities (573,921)   (334,477)
Financial asset of the concession (3,681,433)   (3,111,446)
Actuarial gain – G1 Plan   (91,262)   (125,096)
Construction margin (35,113)   (37,842)
Borrowing Costs -   (280)
Total deferred tax liabilities (5,198,132)   (4,385,144)
       
Net deferred tax liabilities (3,129,908)   (2,661,891)
Schedule of realization
     
  December 31, 2025   December 31, 2024
       
Deferred income tax assets      
to be realized within 12 months 470,419   530,104
to be realized after one year 1,597,805   1,193,149
Total deferred tax asset 2,068,224   1,723,253
       
Deferred income tax liabilities      
to be realized within 12 months (35,317)   (25,563)
to be realized after one year (*) (5,162,815)   (4,359,581)
Total deferred tax liabilities (5,198,132)   (4,385,144)
       
Net Deferred Tax Assets/(Liabilities) (3,129,908)   (2,661,891)

 

(*)The amount of R$ 3,681,433, related to the financial asset, will be realized after the year 2060.
Schedule of changes
         
  December 31, 2024   Net Change   December 31, 2025
           
Deferred income tax assets          
Provisions 839,864   (186,236)   653,628
Pension plan obligations – G1 125,198   2   125,200
Donations of underlying assets on concession agreements 43,321   (2,557)   40,764
Allowance for doubtful accounts 177,271   (60,840)   116,431
Allowance for losses on other accounts receivable 50,515   3,911   54,426
Allowance for inventory losses 127,840   (6,249)   121,591
Allowance for losses on works and projects 57,606   (47,052)   10,554
Allowance for losses on write-off of assets 42,812   3,978   46,790
Performance Agreements 74,670   6,473   81,143
Present value adjustment (PVA) accounts receivable 100,913   (11,840)   89,073
Loss – hedge (Other comprehensive income) 4,302   (4,302)   -
Derivative financial instruments in the profit/loss 3,297   200,893   204,190
Deferred PIS/Cofins -   432,777   432,777
Others 75,644   16,013   91,657
Total deferred tax asset 1,723,253   344,971   2,068,224
           
Deferred income tax liabilities          
Temporary difference in the concession of intangible asset (314,641)   24,513   (290,128)
Capitalization of borrowing costs (461,362)   (64,913)   (526,275)
Profit on supply to government entities (334,477)   (239,444)   (573,921)
Financial asset of the concession (3,111,446)   (569,987)   (3,681,433)
Actuarial gain – G1 Plan (125,096)   33,834   (91,262)
Construction margin (37,842)   2,729   (35,113)
Borrowing Costs (280)   280   -
Total deferred tax liabilities (4,385,144)   (812,988)   (5,198,132)
           
Net Deferred Tax Liabilities (2,661,891)   (468,017)   (3,129,908)

 

  December 31, 2023   Net Change   December 31, 2024
           
Deferred income tax assets          
Provisions 666,131   173,733   839,864
Pension plan obligations – G1 135,231   (10,033)   125,198
Donations of underlying assets on concession agreements 45,140   (1,819)   43,321
Allowance for doubtful accounts 182,519   (5,248)   177,271
Allowance for losses on other accounts receivable 54,905   (4,390)   50,515
Allowance for inventory losses 74,939   52,901   127,840
Allowance for losses on works and projects 1,839   55,767   57,606
Allowance for losses on write-off of assets 8,930   33,882   42,812
Performance Agreements 62,517   12,153   74,670
Present value adjustment (PVA) accounts receivable 102,216   (1,303)   100,913
Loss – hedge (Other comprehensive income) -   4,302   4,302
Derivative financial instruments in the profit/loss -   3,297   3,297
Others 77,421   (1,777)   75,644
Total deferred tax asset 1,411,788   311,465   1,723,253
           
Deferred income tax liabilities          
Temporary difference in the concession of intangible asset (329,060)   14,419   (314,641)
Capitalization of borrowing costs (465,510)   4,148   (461,362)
Profit on supply to government entities (348,514)   14,037   (334,477)
Financial asset of the concession -   (3,111,446)   (3,111,446)
Actuarial gain – G1 Plan (121,425)   (3,671)   (125,096)
Construction margin (40,579)   2,737   (37,842)
Borrowing Costs (8,624)   8,344   (280)
Total deferred tax liabilities (1,313,712)   (3,071,432)   (4,385,144)
           
Net Deferred Tax Assets/(Liabilities) 98,076   (2,759,967)   (2,661,891)

 

       
  December 31, 2025   December 31, 2024
       
Initial balance (2,661,891)   98,076
Net change in the year:      
- consideration in the income statement (501,852)   (2,756,296)
- consideration in equity valuation adjustments (Note 26) 33,835   (3,671)
Total net change (468,017)   (2,759,967)
       
Final balance (3,129,908)   (2,661,891)
Schedule of reconciliation of the effective tax rate
     
  2025   2024
       
Profit before taxes 11,701,851   13,642,808
Statutory rate 34%   34%
Estimated expense at statutory rate (3,978,629)   (4,638,555)
Permanent differences      
Tax benefit from interest on equity 611,320   672,796
Provision Law No. 4.819/1958 – G0 (43,638)   (23,721)
Donations (104)   (21,591)
Tax Incentives 92,550   52,892
Agreement with AAPS (9,709)   (77,471)
Other differences 88,418   (27,595)
Income and social contribution taxes (3,239,792)   (4,063,245)
Current income and social contribution taxes (2,742,241)   (1,302,648)
Deferred income and social contribution taxes (497,551)   (2,760,597)
Effective rate 28%   30%