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Deferred income tax assets and liabilities, net (Tables)
12 Months Ended
Dec. 31, 2017
Deferred Income Tax Assets And Liabilities Net Details 2  
Schedule of deferred income tax assets and liabilities

This caption is made up as follows:

 

   As of January
01, 2016
   Effect on profit or loss   Effect on 
OCI
   Discontinued operations   As of December
31, 2016
   Effect on profit or loss   Effect on 
OCI
   Discontinued operations   As of December
31, 2017
 
   S/(000)   S/(000)   S/(000)   S/(000)   S/(000)   S/(000)   S/(000)   S/(000)   S/(000) 
                                     
Movement of deferred income tax assets:                                    
Deferred income tax assets                                    
Provision for vacations  355   (116)     (167)  72   16         88 
Effect of differences between book and tax bases of fixed assets and in the depreciation rates used for book purposes  (467)  14      455   2   34         36 
Other  62   10      (36)  36   (18)        18 
Tax-loss carry forward  21,127   301      (16,475)  4,953   (4,953)         
Pre-operating costs     1,287         1,287   (1,287)         
Total deferred income tax assets  21,077   1,496      (16,223)  6,350   (6,208)        142 
                                     
Movement of deferred income tax liabilities:                                    
Deferred income tax assets                                    
Impairment of zinc mining assets  24,986   3,332         28,318            28,318 
Impairment on brine project assets, note 1.2                 17,087         17,087 
Long-term incentive plan  10,334   (196)        10,138   (1,194)        8,944 
Provision for vacations  4,051   (382)        3,669   157         3,826 
Available-for-sale financial investment from spin-off, note 1.1                       2,253   2,253 
Discounts on trade receivables                 1,093         1,093 
Other  5,795   (2,016)        3,779   1,849         5,628 
   45,166   738         45,904   18,992      2,253   67,149 
Deferred income tax liabilities                                    
Effect of differences between book and tax bases of fixed assets and in the depreciation rates used for book purposes  (124,157)  (33,479)        (157,636)  (11,332)        (168,968)
Effect of costs of issuance of senior notes  (3,218)  312         (2,906)  484         (2,422)
Net gain on cash flow hedge  (32,439)  711   11,104      (20,624)  9,203   11,277      (144)
Effect of available-for-sale investments disposed, note 9  3      (65)     (62)     62       
Other  (4,424)  (4)        (4,428)  (10)        (4,438)
   (164,235)  (32,460)  11,039      (185,656)  (1,655)  11,339      (175,972)
Total deferred income tax liabilities, net  (119,069)  (31,722)  11,039      (139,752)  17,337   11,339   2,253   (108,823)
       (30,226)  11,039   (16,223)      11,129   11,339   2,253     

Schedule of reconciliation between tax expenses and the product

A reconciliation between tax expenses and the product of the accounting profit multiplied by Peruvian tax rate for the years 2017, 2016 and 2015 is as follows:

 

   2017     2016     2015  
   S/(000)   S/(000)   S/(000) 
                
Profit before income tax from continuing operations   128,417    198,110    306,770 
Loss before income tax from discontinued operations   (1,305)   (12,988)   (8,861)
Accounting profit before income tax   127,112    185,122    297,909 
At statutory income tax rate of 29.5%  (2016: 28%, 2015:28%)   (37,498)   (51,834)   (83,415)
                
Differences               
Non-deductible expenses, net   (8,776)   (5,592)   (5,274)
Effect of tax-loss carry forward non-recognized   (246)   (171)   (233)
Dividends obtained from available-for-sale investments   39    8    34 
Effect of the change in income tax-rate       (14,639)   2,646 
                
At the effective income tax rate of 37% in 2017 (2016: 39% and 2015: 29%)   (46,481)   (72,228)   (86,242)
                
Income tax from continuing operations   (47,032)   (78,627)   (89,383)
Income tax from discontinued operations   551    6,399    3,141 
                
    (46,481)   (72,228)   (86,242)

Schedule of income tax expenses

The income tax expenses shown for the years ended December 31, 2017, 2016 and 2015 are:

 

   2017     2016     2015  
   S/(000)   S/(000)   S/(000) 
                
Consolidated statements of profit or loss               
Current   (58,161)   (48,401)   (61,007)
Deferred   11,129    (30,226)   (28,376)
                
    (47,032)   (78,627)   (89,383)
Schedule of composition of deferred tax

Following is the composition of deferred income tax related to items recognized in OCI and equity during the year:

 

   2017     2016     2015  
   S/(000)   S/(000)   S/(000) 
                
Tax effect on unrealized gain (loss) on available-for-sale financial asset   61    (57)   79 
Tax effect on unrealized gain (loss) on derivative financial asset   11,278    10,272    (4,098)
Effect of the change in income tax-rate       824     
                
Total deferred income tax in OCI   11,339    11,039    (4,019)
                
Temporary difference on purchase of treasury shares           (30)
Temporary difference on available for sale financial investments from spin-off, note 1.1   2,253         
                
Total deferred income tax in equity   2,253        (30)