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Net fees and commission income (Tables) | 12 Months Ended
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Dec. 31, 2025
Fee and commission income (expense) [abstract] |
Summary of Net fees and commission income | Net fees and commission income for the years ended December 31, 2023, 2024 and 2025 are as follows:
|  | 2023 |  |  | 2024 |  |  | 2025 |
Fees and commission income: |  |  |  |  |  |  |  |  |  |  |  |
Credit placement fees |  | W | 75,930 |  |  |  | 73,339 |  |  |  | 64,109 |
Commission received as electronic charge receipt |  |  | 146,037 |  |  |  | 147,625 |  |  |  | 150,709 |
Brokerage fees |  |  | 369,175 |  |  |  | 392,836 |  |  |  | 529,028 |
Commission received as agency |  |  | 134,432 |  |  |  | 153,684 |  |  |  | 176,535 |
Investment banking fees |  |  | 165,366 |  |  |  | 228,976 |  |  |  | 294,948 |
Commission received in foreign exchange activities |  |  | 295,722 |  |  |  | 361,341 |  |  |  | 452,048 |
Trust management fees |  |  | 299,600 |  |  |  | 249,586 |  |  |  | 258,331 |
Credit card fees |  |  | 1,378,200 |  |  |  | 1,311,422 |  |  |  | 1,186,972 |
Operating lease fees (*) |  |  | 600,283 |  |  |  | 651,691 |  |  |  | 651,178 |
Others |  |  | 710,498 |  |  |  | 724,866 |  |  |  | 800,465 |
|  |  | 4,175,243 |  |  |  | 4,295,366 |  |  |  | 4,564,323 |
Fees and commission expense: |  |  |  |  |  |  |  |  |  |  |  |
Credit-related fee |  |  | (45,739 | ) |  |  | (49,924 | ) |  |  | (45,155 | )
Credit card fees |  |  | (930,044 | ) |  |  | (966,303 | ) |  |  | (1,018,051 | )
Others |  |  | (552,254 | ) |  |  | (564,265 | ) |  |  | (579,906 | )
|  |  | (1,528,037 | ) |  |  | (1,580,492 | ) |  |  | (1,643,112 | )
Net fees and commission income |  | W | 2,647,206 |  |  |  | 2,714,874 |  |  |  | 2,921,211 |
| (*) | Among operating lease fees recognized for the years ended December 31, 2023, 2024 and 2025, there is no variable lease fee income which does not vary by index or rate.

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