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Net other operating income and expenses (Tables) | 12 Months Ended
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Dec. 31, 2025
Net other operating income and expenses [Abstract] |
Summary of Other operating income and expenses | Other operating income and expenses for the years ended December 31, 2023, 2024 and 2025 are as follows:
|  | 2023 |  |  | 2024 |  |  | 2025 |
Other operating income |  |  |  |  |  |  |  |  |  |  |  |
Gain on disposal of assets: |  |  |  |  |  |  |  |  |  |  |  |
Loans at amortized cost |  | W | 178,158 |  |  |  | 206,643 |  |  |  | 249,842 |
Others: |  |  |  |  |  |  |  |  |  |  |  |
Gain on hedged items |  |  | 422,074 |  |  |  | 753,798 |  |  |  | 607,993 |
Reversal of allowance for guarantees and acceptances |  |  | 4,856 |  |  |  | 8,471 |  |  |  | — |
Gain on other trust accounts |  |  | 2 |  |  |  | — |  |  |  | — |
Reversal of other allowance |  |  | 1,790 |  |  |  | 8,022 |  |  |  | 1,086 |
Others |  |  | 547,573 |  |  |  | 750,170 |  |  |  | 747,904 |
|  |  | 976,295 |  |  |  | 1,520,461 |  |  |  | 1,356,983 |
|  | W | 1,154,453 |  |  |  | 1,727,104 |  |  |  | 1,606,825 |
Other operating expense |  |  |  |  |  |  |  |  |  |  |  |
Loss on disposal of assets: |  |  |  |  |  |  |  |  |  |  |  |
Loans at amortized cost |  | W | (19,723 | ) |  |  | (97,821 | ) |  |  | (161,910 | )
Others: |  |  |  |  |  |  |  |  |  |  |  |
Loss on hedged items |  |  | (448,664 | ) |  |  | (626,116 | ) |  |  | (753,529 | )
Fund contribution |  |  | (470,227 | ) |  |  | (526,196 | ) |  |  | (559,455 | )
Provision for payment guarantee liabilities |  |  | — |  |  |  | — |  |  |  | (404 | )
Provision for other debt allowances |  |  | (15,516 | ) |  |  | (98,344 | ) |  |  | (35,164 | )
Depreciation of operating lease assets |  |  | (445,006 | ) |  |  | (465,716 | ) |  |  | (445,157 | )
Others (*) |  |  | (1,942,047 | ) |  |  | (1,979,135 | ) |  |  | (1,977,199 | )
|  |  | (3,321,460 | ) |  |  | (3,695,507 | ) |  |  | (3,770,908 | )
|  | W | (3,341,183 | ) |  |  | (3,793,328 | ) |  |  | (3,932,818 | )
Other operating expenses, net |  | W | (2,186,730 | ) |  |  | (2,066,224 | ) |  |  | (2,325,993 | )
| (*) | Includes W 293,824 million for vulnerable groups such as self-employed people, small business owners and institutions supporting vulnerable groups, etc. in accordance with the “Banking financial support plan for people’s livelihood” for the year ended December 31, 2023.

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