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Tax situation - Effective income tax (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2017 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Income Tax Explanatory |  |  |  |  |
Profit before income tax |  | $ 82,524 | $ 124,429 | $ 101,129 |
Income tax rate | 29.50% |  | 32.00% | 32.00% | 32.00%
Expected income tax expense |  | 10,302 | $ (82,803) | $ 72,237 |
Non - deductible expenses |  | 12,948 | (13,144) | 2,048 |
Aggregate current and deferred tax relating to items credited (charged) directly to equity |  |  | (13,372) |  |
Tax expense (income), continuing operations |  | 42,994 | 41 | (23,671) |
Sociedad Minera Cerro Verde S.A.A. |  |  |  |  |
Disclosure Of Income Tax Explanatory |  |  |  |  |
Profit before income tax |  | $ 1,330,762 | $ 1,433,900 | $ 1,927,177 |
Income tax rate |  | 32.00% | 32.00% | 32.00% |
Expected income tax expense |  | $ 425,844 | $ 458,848 | $ 616,697 |
Special mining tax and mining royalties |  | (32,182) | (31,188) | (46,366) |
Provision (gain) for uncertainty about treatments of income taxes |  | (1,617) | (19,667) | (14,379) |
Non - deductible expenses |  | 12,744 | 13,608 | 14,609 |
Income tax true - ups |  | 1,267 | (11,831) | 6,345 |
Moratorium interest |  | 40,769 | (741) | 1,019 |
Income tax rate change effect on deferred taxes for change in Peruvian tax law once the current Stability Contract expires (from 32% to 30.85%) |  | 208 | 1,117 | 840 |
Others |  | 1,518 | 3,055 | 2,830 |
Aggregate current and deferred tax relating to items credited (charged) directly to equity |  | 448,551 | 413,201 | 581,595 |
Mining taxes charged to results |  | 96,082 | 88,224 | 144,895 |
Supplementary retirement fund charged to results |  | 7,165 | 7,122 | 9,213 |
Tax expense (income), continuing operations |  | $ 551,798 | $ 508,547 | $ 735,703 |
Effective income tax |  | 41.46% | 35.47% | 38.18% |

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