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19 Deferred taxes and contributions (Tables)
 12 Months Ended
Dec. 31, 2020
Deferred Taxes And Contributions  
Schedule of deferred taxes
  December 31, 2020 December 31, 2019
Deferred income tax assets    
Provisions 436,445 366,673
Pension obligations - G1 154,498 157,998
Donations of underlying asset on concession agreements 50,142 51,818
Credit losses 155,719 145,622
Other 134,932 183,147
Total deferred tax assets 931,736 905,258
     
Deferred income tax liabilities    
Temporary difference on concession of intangible asset (388,675) (408,732)
Capitalization of borrowing costs (390,211) (409,236)
Profit on supply to government entities (356,513) (372,289)
Actuarial gain/loss – G1 Plan (48,979) (54,222)
Construction margin (48,843) (83,399)
Borrowing costs (19,231) (11,376)
Total deferred tax liabilities (1,252,452) (1,339,254)
     
Deferred tax assets (liabilities), net (320,716) (433,996)
Schedule of realization
December 31, 2020 December 31, 2019
Deferred income tax assets    
to be realized within 12 months 263,580 189,740
to be realized after one year 668,156 715,518
Total deferred tax asset 931,736 905,258
Deferred income tax liabilities    
to be realized within 12 months (31,388) (35,954)
to be realized after one year (1,221,064) (1,303,300)
Total deferred tax liabilities (1,252,452) (1,339,254)
Deferred tax liability (320,716) (433,996)
Schedule of changes
Deferred income tax assets December 31,
2019		 Net change December 31,
2020
Provisions 366,673 69,772 436,445
Pension obligations - G1 157,998 (3,500) 154,498
Donations of underlying asset on concession agreements 51,818 (1,676) 50,142
Credit losses 145,622 10,097 155,719
Other 183,147 (48,215) 134,932
Total 905,258 26,478 931,736
       
Deferred income tax liabilities      
Temporary difference on concession of intangible asset (408,732) 20,057 (388,675)
Capitalization of borrowing costs (409,236) 19,025 (390,211)
Profit on supply to governmental entities (372,289) 15,776 (356,513)
Actuarial (gain)/loss – G1 (54,222) 5,243 (48,979)
Construction margin (83,399) 34,556 (48,843)
Borrowing costs (11,376) (7,855) (19,231)
Total (1,339,254) 86,802 (1,252,452)
       
Deferred tax liabilities, net (433,996) 113,280 (320,716)

 

Deferred income tax assets

December 31,

2018 

Net

change  

December 31,

2019 

Provisions 337,833 28,840 366,673
Pension obligations - G1 157,044 954 157,998
Donations of underlying asset on concession agreements 54,131 (2,313) 51,818
Credit losses 197,920 (52,298) 145,622
Other 186,887 (3,740) 183,147
Total 933,815 (28,557) 905,258
       
Deferred income tax liabilities      
Temporary difference on concession of intangible asset (433,842) 25,110 (408,732)
Capitalization of borrowing costs (420,978) 11,742 (409,236)
Profit on supply to governmental entities (206,978) (165,311) (372,289)
Actuarial (gain)/loss – G1 (36,430) (17,792) (54,222)
Construction margin (86,164) 2,765 (83,399)
Borrowing costs (10,665) (711) (11,376)
Total (1,195,057) (144,197) (1,339,254)
       
Deferred tax assets (liabilities), net (261,242) (172,754) (433,996)

 

Deferred income tax assets

December 31,  

2017 

Net

 change  

December 31,

2018 

Provisions 482,863 (145,030) 337,833
Pension obligations - G1 165,503 (8,459) 157,044
Donations of underlying asset on concession agreements 55,112 (981) 54,131
Credit losses 199,063 (1,143) 197,920
Other 151,562 35,325 186,887
Total 1,054,103 (120,288) 933,815
       
Deferred income tax liabilities      
Temporary difference on concession of intangible asset (460,177) 26,335 (433,842)
Capitalization of borrowing costs (415,379) (5,599) (420,978)
Profit on supply to governmental entities (76,705) (130,273) (206,978)
Actuarial (gain)/loss – G1 (36,538) 108 (36,430)
Construction margin (88,947) 2,783 (86,164)
Borrowing costs (13,111) 2,446 (10,665)
Total (1,090,857) (104,200) (1,195,057)
       
Deferred tax assets (liabilities), net (36,754) (224,488) (261,242)

 

 

December 31, 2020 

  

December 31,

 2019 

  

December 31,

 2018 

           
Opening balance (433,996)   (261,242)   (36,754)
Net change in the year:          
 - corresponding entry to the income statement 108,037   (154,962)   (224,596)
 - corresponding entry to valuation adjustments to equity (Note 21 (b)) 5,243   (17,792)   108
           
Total net change 113,280   (172,754)   (224,488)
Closing balance (320,716)   (433,996)   (261,242)
Schedule of reconciliation of the effective tax rate
December 31, 2020 December 31, 2019 December 31, 2018
       
Profit before income taxes 1,326,002 4,677,942 3,912,319
Statutory rate 34% 34% 34%
       
Estimated expense at statutory rate (450,841) (1,590,500) (1,330,186)
Tax benefit of interest on equity 126,604 312,339 264,816
Permanent differences      
Provision – Law 4,819/1958 – G0 (i) (37,675) (44,426) (46,544)
Donations (8,672) (19,888) (13,068)
Other differences 17,900 32,050 47,731
       
Income tax and social contribution (352,684) (1,310,425) (1,077,251)
       
Current income tax and social contribution (460,721) (1,155,463) (852,655)
Deferred income tax and social contribution 108,037 (154,962) (224,596)
Effective rate 27% 28% 28%

 

  (i) Permanent difference related to the provision for actuarial liability (Note 21 (b) (ii)).