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Significant accounting policies (Tables)
 12 Months Ended
Dec. 31, 2024
Significant Accounting Policies  
Schedule of foreign exchange rates used to translate monetary items
The main exchange rates and UF used to translate monetary assets and liabilities, expressed in foreign currency at the end and average of each period in respect to U.S. dollars, are as follows:
Closing exchange ratesAverage exchange rates
CurrenciesAs of
December 31,
2024		As of
December 31,
2023		As of
December 31,
2024		As of
December 31,
2023
ThUS$ThUS$ThUS$ThUS$
Brazilian real6.184.856.104.90
New Peruvian sol3.773.703.733.73
Japanese yen157.21140.90153.66143.94
Euro0.960.900.950.92
Mexican peso20.5516.9220.2317.18
Australian dollar1.611.461.581.49
Pound Sterling0.800.780.790.79
South African rand18.8218.2718.1918.61
Chilean peso996.46877.12983.24875.06
Chinese yuan7.317.127.297.15
Indian rupee85.5383.2184.9583.26
Thai Baht34.2134.3634.1334.95
Turkish lira35.3329.5234.9629.09
Korean Won1,472.301,290.701,438.071,304.17
Indonesian Rupiah16,138.0015,399.0016,035.1515,502.63
United Arab Emirates dirham3.673.673.673.67
Polish Zloty4.123.934.073.97
UF (*)38.5541.9439.0742.04
________________________________________________
(*)US$ per UF
Schedule of other (outflows) inflows of cash from operating activities
Other (outflows) inflows of cash from operating activities are composed as follows:
For the year ended December 31,
2024		December 31,
2023		December 31,
2022
Banking expenses(11,046)(15,603)(3,783)
Tax credits(6,255)(3,353)(3,474)
Government grants13,076 24,387 — 
Value added tax61,426 (298,076)120,283 
Debt issuance costs(23,091)(18,346)(2,566)
34,110(310,991)110,460
Schedule of useful lives of property, plant and equipment
The useful lives used for the depreciation and amortization of assets included in property, plant and equipment are presented below:
Classes of property, plant and equipmentMinimum life or
rate (years)		Maximum life or
rate (years)		Life or average rate
in years
Mining assets (*)5108
Energy generating assets5158
Buildings32512
Supplies and accessories4158
Office equipment5109
Transport equipment7209
Network and communication equipment4158
IT equipment3117
Machinery, plant and equipment32811
Other fixed assets3209
(*) Mining equipment includes SQM Australia's exploration assets, which are depreciated on a unit of production basis.
Schedule of useful lives of intangible assets
Minimum and maximum amortization lives or rates of intangible assets:
Estimated useful life or amortization rateMinimum Life or
Rate		Maximum Life or
Rate
Water rights1 yearIndefinite
Rights of wayIndefiniteIndefinite
Corfo Mining properties (1)6 years6 years
Mining rightsUnit-production method
Intellectual property9 years14 years
IT programs1 year7 years
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(1)Mining properties owned by Corfo and leased to the Company, which grant it the exclusive right to exploit them until December 31, 2030.
Earnings per share
The basic earnings per share amounts are calculated by dividing the net income for the year attributable to the ordinary owners of the parent by the weighted average number of ordinary shares outstanding during the year.
Earnings per ShareFor the year ended December 31
202420232022
Net income attributable to the owners of the parent (ThUS$)685,117923,1913,906,311
Weighted average number of shares285,637,916285,638,456285,638,456
Basic earnings per share (US$)2.39863.232013.6757
Net income attributable to the owners of the parent (ThUS$)685,117923,1913,906,311
Weighted average number of shares285,637,916285,638,456285,638,456
Diluted earnings per share (US$)2.39863.232013.6757
Series A common shares142,819,012142,819,552142,819,552
Series B common shares142,818,904142,818,904142,818,904
Total weighted average number of shares 285,637,916285,638,456285,638,456