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v3.19.1

Tax situation (Details 5) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Profit before income tax | $ 22,475 | $ 92,545 | $ (255,237)
Income tax rate | 32.00% | 32.00% |
Expected income tax expense | $ 22,502 | $ 12,797 | 46,710
Income tax rate change effect on deferred taxes for change in Peruvian tax law once the current Stability Contract expires (from 32% to 31.18%) | 0 | 0 | (1,431)
Others | 3,492 | 16,513 | 6,577
Tax expense (income), continuing operations | (26,926) | (18,012) | (53,504)
Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |
Profit before income tax | $ 444,880 | $ 835,924 | $ 603,989
Income tax rate | 32.00% | 32.00% | 32.00%
Expected income tax expense | $ 142,362 | $ 267,496 | $ 193,276
Non - deductible expenses | 25,352 | 25,217 | 27,788
Royalty case | 143,728 | (12,029) | 0
Special mining tax and mining royalties | (25,165) | (21,704) | (12,084)
Special mining burden (GEM) | (22,334) | 0 | 0
Income tax rate change effect on deferred taxes for change in Peruvian tax law once the current Stability Contract expires (from 32% to 31.18%) | (1,958) | (1,632) | 13,850
Income tax true - ups | (10,312) | 10,210 | 1,677
Others | 4,896 | (4,125) | (1,913)
Current and deferred income tax charges to results | 256,569 | 263,433 | 222,594
Mining taxes charged to results | 65,055 | 213,280 | 37,763
Supplementary retirement fund charged to results | 3,546 | 9,330 | 2,725
Tax expense (income), continuing operations | $ 325,170 | $ (486,043) | $ (263,082)
Effective income tax | 73.09% | 58.14% | 43.56%

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