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Cash and due from banks at amortized cost | 12 Months Ended
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Dec. 31, 2025
Cash and Due from banks at amortized cost [Abstract] |
Cash and due from banks at amortized cost |
9. | Cash and due from banks at amortized cost
| (a) | Cash and due from banks at amortized cost as of December 31, 2024 and 2025 are as follows:
|  | 2024 |  |  | 2025 |
Cash |  | W | 2,296,962 |  |  |  | 2,882,978 |
Deposits denominated in Korean won: |  |  |  |  |  |  |  |
Reserve deposits |  |  | 11,594,266 |  |  |  | 8,164,072 |
Time deposits |  |  | 2,198,645 |  |  |  | 893,222 |
Certificate of deposit |  |  | — |  |  |  | 19,434 |
Other |  |  | 3,365,689 |  |  |  | 4,286,250 |
|  |  | 17,158,600 |  |  |  | 13,362,978 |
Deposits denominated in foreign currency: |  |  |  |  |  |  |  |
Deposits |  |  | 14,934,942 |  |  |  | 16,942,214 |
Time deposits |  |  | 3,956,971 |  |  |  | 3,908,381 |
Other |  |  | 2,199,579 |  |  |  | 2,662,154 |
|  |  | 21,091,492 |  |  |  | 23,512,749 |
Allowance for credit losses |  |  | (21,342 | ) |  |  | (16,100 | )
|  | W | 40,525,712 |  |  |  | 39,742,605 |
| (b) | Restricted due from banks in accordance with related regulations or acts as of December 31, 2024 and 2025 are as follows:
|  | 2024 |  |  | 2025 |  |  | Related regulations or acts
Deposits denominated in Korean won: |  |  |  |  |  |  |  |  |  |
Reserve deposits |  | W | 11,594,266 |  |  |  | 8,164,072 |  |  | Article 55 of the Bank of Korea Act
Other |  |  | 1,978,415 |  |  |  | 1,727,588 |  |  | Article 74 of the Capital Markets and Financial Investment Business Act, etc.
|  |  | 13,572,681 |  |  |  | 9,891,660 |  |  |
Deposits denominated in foreign currency |  |  | 11,046,189 |  |  |  | 8,367,341 |  |  | Articles of the Bank of Korea Act, New York State Banking Act, derivatives related, etc.
|  | W | 24,618,870 |  |  |  | 18,259,001 |  |  |
| (c) | The details of early redemptions of deposits measured at amortized cost during the year ended December 31, 2025 are as follows:
|  | Carrying amount (*1) |  |  | Gain (loss) from redemption (*2) |
Installment savings |  | W | 137,975 |  |  |  | 1,639 |
Time deposits |  |  | 33,186 |  |  |  | (6,070 | )
| (*1) | The carrying amount includes accrued interest of W 65,737 million.
| (*2) | During the year ended December 31, 2025, certain installment savings and time deposits were early redeemed due to the issuer’s early termination and the closure of operations, respectively, and were derecognized.

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