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v3.26.1

Income tax expense - Summary of income tax expense calculated by multiplying net income before tax with the tax rate (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |
Profit before income taxes | ₩ 6,929,009 | ₩ 6,029,092 | ₩ 5,964,960
Income taxes at statutory tax rates | 1,818,897 | 1,581,318 | 1,564,388
Non-taxable income | (20,796) | (44,370) | (10,350)
Non-deductible expense | 23,909 | 19,755 | 16,514
Tax credit | (1,318) | (1,484) | (1,185)
Others | 23,798 | (84,297) | (82,407)
Income tax expenses | ₩ 1,844,490 | ₩ 1,470,922 | ₩ 1,486,960
Effective tax rate | 26.62% | 24.40% | 24.93%

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