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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2025
Disclosure of contingent liabilities [abstract] |
Summary of guarantees, acceptances and credit commitments |
| (a) | Guarantees, acceptances and credit commitments as of December 31, 2024 and 2025 are as follows:
|  | 2024 |  |  | 2025 |
Guarantees and purchase agreements: |  |  |  |  |  |  |  |
Outstanding guarantees |  | W | 15,315,381 |  |  |  | 18,642,539 |
Contingent guarantees |  |  | 5,068,782 |  |  |  | 4,917,473 |
ABS and ABCP purchase agreements |  |  | 2,123,665 |  |  |  | 2,649,382 |
|  |  | 22,507,828 |  |  |  | 26,209,394 |
Commitments to extend credit: |  |  |  |  |  |  |  |
Loan commitments in won |  |  | 93,064,772 |  |  |  | 95,042,772 |
Loan commitments in foreign currency |  |  | 28,613,692 |  |  |  | 25,559,545 |
Unused credit commitments |  |  | 90,700,766 |  |  |  | 93,230,869 |
Other agreements |  |  | 6,601,564 |  |  |  | 6,483,867 |
|  |  | 218,980,794 |  |  |  | 220,317,053 |
Endorsed bills: |  |  |  |  |  |  |  |
Secured endorsed bills |  |  | 1,367 |  |  |  | 12,574 |
Unsecured endorsed bills |  |  | 11,937,894 |  |  |  | 10,560,935 |
|  |  | 11,939,261 |  |  |  | 10,573,509 |
|  | W | 253,427,883 |  |  |  | 257,099,956 |
Summary of pending litigations |
| (b) | Pending litigations
The Group’s pending lawsuits as a defendant as of December 31, 2025 are as follows:
Case |  | Number of claims |  | Claim amount |  |  | Description |  | Status
Return of unjust earning |  | 1 |  | W | 5,027 |  |  | The plaintiff, a residents’ representative council composed of apartment residents, claims that, following a final court judgment invalidating the formation of the 5th and 6th residents’ representative councils of the apartment complex, illegal acts occurred in the handling of the plaintiff’s Shinhan Bank account, including the transfer of account ownership, in connection with a change in the plaintiff’s representative at the time, thereby causing damages to the plaintiff. |  | The first trial is ongoing as of December 31, 2025.
Loss claim |  | 2 |  |  | 73,830 |  |  | A case in which OO Bank and OO Securities filed a lawsuit for damages against employees of Shinhan Securities Co., Ltd. alleging their involvement in the illegal activities of Lime Asset Management. |  | The second trial is ongoing as of December 31, 2025. (*1)
Loss claim |  | 2 |  |  | 36,937 |  |  | A case in which OO Bank and OO Securities filed a lawsuit for damages against employees of Shinhan Securities Co., Ltd. alleging their involvement in the illegal activities of Lime Asset Management. |  | The first trial is ongoing as of December 31, 2025. (*2)
Loss claim regarding responsibility for construction completion in a management-type land trust |  | 9 |  |  | 261,630 |  |  | Lenders holding claims for principal and interest have filed lawsuits for damages against Shinhan Asset Trust Co., Ltd., regarding its failure to meet construction completion deadlines under managed land trust agreements with completion guarantees |  | (*3)
Other trust-related litigations |  | 718 |  |  | 640,999 |  |  | Claims against Shinhan Asset Trust Co., Ltd. for defect-related damages, refund of the purchase price, and other related claims |  | (*4)
Case |  | Number of claims |  |  | Claim amount |  |  | Description |  | Status
Others |  |  | 465 |  |  |  | 390,946 |  |  | Includes multiple cases: Shinhan Bank W 164,553 million (264 cases), Shinhan Card W 13,206 million (49 cases), Shinhan Securities W 120,534 million (28 cases), Shinhan Life W 10,350 million (93 cases), Shinhan Capital W 30,864 million (4 cases), and others. |  | (*5)
|  |  | 1,197 |  |  | W | 1,409,369 |  |  |  |  |
| (*1) | Following a partial loss in the first trial on February 14, 2025, approximately W 63,200 million was paid. An appeal has been filed and the case is currently pending in the second trial.
| (*2) | Subsequent to the end of the reporting period, a partial loss was decided in the first trial on February 5, 2026, and approximately W 41,500 million was paid. As of December 31, 2025 the Group has recognized litigation provisions of approximately W 40,100 million.
| (*3) | As of the end of the reporting period, there were five cases pending in the court of first instance (claim amount: W 169,930 million) and four cases pending in the court of second instance (claim amount: W 91,700 million). However, subsequent to the reporting period, all cases were concluded through withdrawal of the lawsuits following separate settlements with the plaintiffs.
| (*4) | These lawsuits are related to the trust business of Shinhan Asset Trust Co., Ltd. In the event of a loss, the judgment amount (principal and interest) will be paid from the trust account or can be recovered through a right of indemnity against trust-related parties. Accordingly, the impact on the Group’s own account is expected to be limited.
| (*5) | Subsequent to the reporting period, on February 11, 2026, an unfavorable judgment was issued by the court of first instance in a claim for damages related to the trust business (1 case, claim amount: W 7,005 million), and on February 12, 2026, a partially unfavorable judgment was issued by the court of second instance in a lawsuit seeking contractual agreed payments filed by a plaintiff (1 case, claim amount: W 5,000 million). As of December 31, 2025, the Group recognized provisions for litigation amounting to W 3,694 million and W 7,379 million, respectively, in connection with these cases. The cases are currently pending on appeal and before the Supreme Court, respectively.

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