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Loans at amortized cost, etc. (Tables)
12 Months Ended
Dec. 31, 2025
Loans at amortized cost and other assets [Abstract]  
Loans at amortized cost and other assets
  (a)
The composition of loans at amortized cost by customer as of December 31, 2024 and 2025 is as follows:
 
    
2024
    
2025
 
Retail loans
  
W
166,140,123        173,568,321  
Corporate loans (*)
     251,011,516        259,593,754  
Public and other loans
     5,253,071        4,845,465  
Loans between banks
     1,946,442        1,691,536  
Credit card receivables
     28,894,371        28,653,978  
  
 
 
    
 
 
 
     453,245,523        468,353,054  
  
 
 
    
 
 
 
Discount
     (29,923      (26,251
Deferred loan origination costs
     645,569        727,749  
  
 
 
    
 
 
 
     453,861,169        469,054,552  
Less: Allowance for credit loss
     (4,565,931      (4,280,672
  
 
 
    
 
 
 
  
W
449,295,238        464,773,880  
  
 
 
    
 
 
 
 
  (*)
Includes SOHO loans, among others.
Changes in loans at amortized cost, etc.
  (b)
Changes in the carrying amount of loans at amortized cost, etc. for the years ended December 31, 2024 and 2025 are as follows:
i) Loans at amortized cost
 
   
2024
 
   
Retail
   
Corporate
   
Credit card
   
Others
       
 
12-month
expected

credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month

expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month

expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
12-month

expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
Total
 
Beginning balance
 
W
145,441,757       9,390,209       794,050       181,802,456       41,746,140       1,548,844       23,294,631       4,110,407       645,603       6,444,509       826,979       24,447       416,070,032  
Transfer (from) to
12-month
expected credit losses
    3,147,209       (3,133,165     (14,044     8,633,328       (8,567,306     (66,022     59,878       (59,830     (48     30,878       (30,878     —        —   
Transfer (from) to lifetime expected credit losses
    (7,176,298     7,236,219       (59,921     (14,466,401     14,506,969       (40,568     (50,080     50,133       (53     (189,201     189,201       —        —   
Transfer (from) to credit-impaired financial assets
    (478,797     (281,842     760,639       (424,077     (611,269     1,035,346       (19,995     (12,913     32,908       (43     (9,600     9,643       —   
Net increase (decrease) (*1)
    12,578,349       (843,971     18,273       24,466,147       2,178,224       893,286       1,320,926       (481,264     1,008,038       (303,276     50,784       6,123       40,891,639  
Charge off (*2)
    —        —        (393,809     —        —        (450,932     —        —        (685,877     —        —        (5,483     (1,536,101
Disposal
    —        (2,706     (200,812     (33,148     (190,000     (761,001     —        —        (357,581     —        (410     (18,743     (1,564,401
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
 
W
153,512,220       12,364,744       904,376       199,978,305       49,062,758       2,158,953       24,605,360       3,606,533       642,990       5,982,867       1,026,076       15,987       453,861,169  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*1)
Includes the effects of the issuance, collection, restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
  (*2)
The amount of uncollected loans currently in recovery (principal and interest) is
W
 10,268,898 million, which is written off as of December 31, 2024.
 
 
   
2025
 
   
Retail
   
Corporate
   
Credit card
   
Others
       
 
12-month
expected credit
losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
Total
 
Beginning balance
 
W
153,512,220       12,364,744       904,376       199,978,305       49,062,758       2,158,953       24,605,360       3,606,533       642,990       5,982,867       1,026,076       15,987       453,861,169  
Transfer (from) to 12-month expected credit losses
    4,966,815       (4,952,706     (14,109     11,474,546       (11,453,191     (21,355     1,040,384       (1,040,209     (175     127,708       (127,708     —        —   
Transfer (from) to lifetime expected credit losses
    (4,600,026     4,678,174       (78,148     (15,753,286     16,008,648       (255,362     (1,145,956     1,146,484       (528     (214,090     214,091       (1     —   
Transfer (from) to credit- impaired financial assets
    (450,753     (296,548     747,301       (843,905     (670,277     1,514,182       (369,466     (357,902     727,368       (10,524     (920     11,444       —   
Net increase (decrease) (*1)
    10,479,493       (2,351,966     1,694       10,956,888       (1,204,297     663,429       968,671       (318,368     450,990       (675,876     (63,762     6,175       18,913,071  
Charge off (*2)
    —        —        (373,347     —        —        (833,199     —        —        (806,961     —        —        (14,410     (2,027,917
Disposal
    —        (2,672     (241,633     (9,998     (57,522     (839,847     —        —        (532,002     —        —        (8,097     (1,691,771
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
 
W
163,907,749       9,439,026       946,134       205,802,550       51,686,119       2,386,801       25,098,993       3,036,538       481,682       5,210,085       1,047,777       11,098       469,054,552  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*1)
Includes the effects of the issuance, collection, restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
  (*2)
The amount of uncollected loans currently in recovery (principal and interest) is
W
10,682,802 million, which is written off as of December 31, 2025.
 
 
ii) Due from banks at amortized cost and other financial assets
 
    
2024
 
  
12-month
expected

credit losses
   
Lifetime
expected

credit losses
   
Impaired
financial
asset
   
Total
 
Beginning balance
  
W
59,409,121       245,916       167,788       59,822,825  
Transfer (from) to 12 month expected credit losses
     34,752       (34,626     (126     —   
Transfer (from) to lifetime expected credit losses
     (62,021     62,091       (70     —   
Transfer (from) to credit- impaired financial assets
     (8,949     (21,143     30,092       —   
Net increase (decrease) (*)
     2,116,517       (10,556     205,387       2,311,348  
Charge off
     —        —        (61,157     (61,157
Disposal
     (475     (6,430     (124,756     (131,661
  
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
  
W
61,488,945       235,252       217,158       61,941,355  
  
 
 
   
 
 
   
 
 
   
 
 
 
 
    
2025
 
  
12-month
expected

credit losses
   
Lifetime
expected

credit losses
   
Impaired
financial
asset
   
Total
 
Beginning balance
  
W
61,488,945       235,252       217,158       61,941,355  
Transfer (from) to 12 month expected credit losses
     33,235       (33,122     (113     —   
Transfer (from) to lifetime expected credit losses
     (50,051     50,130       (79     —   
Transfer (from) to credit- impaired financial assets
     (6,288     (16,627     22,915       —   
Net increase (decrease) (*)
     18,837,706       (14,525     41,033       18,864,214  
Charge off
     —        —        (92,749     (92,749
Disposal
     —        (1,164     (6,378     (7,542
  
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
  
W
80,303,547       219,944       181,787       80,705,278  
  
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*)
Includes the effects of the issuance, collection, restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
Changes in allowances for credit loss of loans at amortized cost and other assets
  (c)
Changes in the allowance for credit losses on loans at amortized cost, etc. for the years ended December 31, 2024 and 2025 are as follows:
i) Loans at amortized cost
 
   
2024
 
   
Retail
   
Corporate
   
Credit card
   
Others
 
 
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
Total
 
Beginning balance
 
W
243,266       207,362       283,191       789,050       994,345       628,487       230,286       460,848       462,554       13,372       10,371       7,338       4,330,470  
Transfer (from) to 12-month expected credit losses
    40,874       (39,258     (1,616     140,511       (137,260     (3,251     25,333       (25,273     (60     85       (85     —        —   
Transfer (from) to lifetime expected credit losses
    (24,178     50,652       (26,474     (79,310     86,108       (6,798     (19,981     20,177       (196     (1,310     1,310       —        —   
Transfer (from) to credit- impaired financial assets
    (15,753     (21,007     36,760       (5,838     (84,444     90,282       (2,696     (4,919     7,615       —        (60     60       —   
Provision (reversal)
    21,772       25,003       392,200       (123,593     23,937       760,786       30,805       (32,602     751,753       412       6,016       5,524       1,862,013  
Charge off
    —        —        (393,809     —        —        (450,932     —        —        (685,877     —        —        (5,483     (1,536,101
Amortization of discount
    —        —        (13,501     —        —        (27,710     —        —        6,180       —        —        —        (35,031
Disposal
    —        (261     (53,538     (2,946     (19,347     (90,141     —        —        (257,543     —        (1     (1,061     (424,838
Collection
    —        —        112,627       —        —        75,082       —        —        172,842       —        —        487       361,038  
Others (*)
    2,552       526       4,251       7,231       9,565       (16,997     167       24       848       189       24       —        8,380  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
 
W
268,533       223,017       340,091       725,105       872,904       958,808       263,914       418,255       458,116       12,748       17,575       6,865       4,565,931  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*)
Includes the effects of restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
 
 
   
2025
 
   
Retail
   
Corporate
   
Credit card
   
Others
 
 
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial
asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
12-month
expected
credit losses
   
Lifetime
expected
credit losses
   
Impaired
financial

asset
   
Total
 
Beginning balance
 
W
268,533       223,017       340,091       725,105       872,904       958,808       263,914       418,255       458,116       12,748       17,575       6,865       4,565,931  
Transfer (from) to 12-month expected credit losses
    53,827       (51,918     (1,909     134,081       (132,826     (1,255     84,381       (84,246     (135     8,442       (8,442     —        —   
Transfer (from) to lifetime expected credit losses
    (18,210     56,419       (38,209     (74,530     80,482       (5,952     (24,117     24,486       (369     (283     283       —        —   
Transfer (from) to credit- impaired financial assets
    (17,720     (26,077     43,797       (5,712     (76,398     82,110       (11,675     (113,200     124,875       (45     (244     289       —   
Provision (reversal)
    (22,099     21,425       251,154       (71,512     83,178       885,920       (87,645     132,894       825,064       (10,665     (2,233     8,656       2,014,137  
Charge off
    —        —        (373,347     —        —        (833,199     —        —        (806,961     —        —        (14,410     (2,027,917
Amortization of discount
    —        —        (11,333     —        —        (27,865     —        —        79       —        —        —        (39,119
Disposal
    —        (377     (66,868     —        (3,381     (107,589     —        —        (371,086     —        —        (75     (549,376
Collection
    —        —        195,229       —        —        51,741       —        —        96,413       —        —        412       343,795  
Others (*)
    (2,369     (478     921       (7,497     (6,213     (4,283     316       (1,003     (6,187     86       (72     —        (26,779
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
 
W
261,962       222,011       339,526       699,935       817,746       998,436       225,174       377,186       319,809       10,283       6,867       1,737       4,280,672  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*)
Includes the effects of restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
 
 
ii) Due from banks at amortized cost and other financial assets
 
    
2024
 
  
12-month
expected

credit losses
   
Lifetime
expected

credit losses
   
Impaired
financial asset
   
Total
 
Beginning balance
  
W
332,951       15,650       137,968       486,569  
Transfer (from) to 12-month expected credit losses
     1,262       (1,229     (33     —   
Transfer (from) to lifetime expected credit losses
     (5,414     5,441       (27     —   
Transfer (from) to credit- impaired financial assets
     (178     (5,715     5,893       —   
Provision
     175       629       112,858       113,662  
Write-offs
     —        —        (61,157     (61,157
Disposal
     (1     (38     (15,028     (15,067
Collection
     —        —        3,292       3,292  
Others (*)
     65,689       14       2,644       68,347  
  
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
  
W
394,484       14,752       186,410       595,646  
  
 
 
   
 
 
   
 
 
   
 
 
 
 
    
2025
 
  
12-month
expected

credit losses
   
Life time
expected

credit losses
   
Impaired
financial asset
   
Total
 
Beginning balance
  
W
394,484       14,752       186,410       595,646  
Transfer (from) to 12-month expected credit losses
     654       (613     (41     —   
Transfer (from) to lifetime expected credit losses
     (869     891       (22     —   
Transfer (from) to credit- impaired financial assets
     (1,957     (5,084     7,041       —   
Provision
     4,759       507       64,769       70,035  
Write-offs
     —        —        (92,749     (92,749
Disposal
     —        (37     (5,663     (5,700
Collection
     —        —        2,688       2,688  
Others (*)
     1,728       (6     (14,226     (12,504
  
 
 
   
 
 
   
 
 
   
 
 
 
Ending balance
  
W
398,799       10,410       148,207       557,416  
  
 
 
   
 
 
   
 
 
   
 
 
 
 
  (*)
Includes the effects of restructuring of loans,
debt-to-equity
swaps, and changes in foreign exchange rates, among others.
Changes in deferred loan origination costs
  (d)
Changes in deferred loan origination costs for the years ended December 31, 2024 and 2025 are as follows:
 
    
2024
    
2025
 
Beginning balance
  
W
505,986        645,569  
Loan origination
     344,963        306,840  
Amortization, etc.
     (205,380      (224,660
  
 
 
    
 
 
 
Ending balance
  
W
645,569        727,749