v3.26.1
Retirement Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2025
Text block [abstract]  
Summary of Defined Benefit Plans Amounts Included in Consolidated Balance Sheets
  4)
The amounts included in the consolidated balance sheets arising from the Group’s obligation in respect of its defined benefit plans excluding those for executive managers were as follows:
 
 
 
December 31
 
 
 
2024
 
 
2025
 
 
 
NT$
 
 
NT$
 
 
US$ (Note 4)
 
Present value of the defined benefit obligation
  $ 10,123,897     $  11,431,170     $ 364,398  
Fair value of the plan assets
    (7,254,310 )      (7,819,145 )      (249,255 ) 
 
 
 
   
 
 
   
 
 
 
Net defined benefit liabilities
    2,869,587       3,612,025       115,143  
Recorded under other payables
    (18,622 )      (19,057 )     (608 )
Recorded under other non-current assets
    164,176       342,046       10,904  
 
 
 
   
 
 
   
 
 
 
Recorded under net defined benefit liabilities
  $ 3,015,141     $ 3,935,014     $  125,439  
 
 
 
   
 
 
   
 
 
 
Summary of Movements in Net Defined Benefit Liability (Asset)
Movements in net defined benefit liabilities were as follows:
 
    
Present Value

of the Defined
Benefit
Obligation
   
Fair Value of the
Plan Assets
   
Net Defined
Benefit

Liabilities
(Assets)
 
    
NT$
   
  NT$  
   
  NT$  
 
Balance at January 1, 2023
   $ 10,261,997     $ (6,477,877 )    $ 3,784,120  
  
 
 
   
 
 
   
 
 
 
Service cost
      
Current service cost
     126,956       -       126,956  
Past service cost and loss on settlements
     1,194       -       1,194  
Net interest expense (income)
     236,102       (173,994 )      62,108  
Other termination benefit cost
     7,822       -       7,822  
  
 
 
   
 
 
   
 
 
 
Recognized in profit or loss
     372,074       (173,994 )      198,080  
  
 
 
   
 
 
   
 
 
 
Remeasurement
      
Return on plan assets (excluding amounts included in net interest)
     -       (9,327 )      (9,327 ) 
Actuarial (gain) loss
      
Changes in financial assumptions
     391,077       -       391,077  
Experience adjustments
     (309,843 )      -       (309,843 ) 
Changes in demographic assumptions
     (6,476 )      -       (6,476 ) 
  
 
 
   
 
 
   
 
 
 
Recognized in other comprehensive income
     74,758       (9,327 )      65,431  
  
 
 
   
 
 
   
 
 
 
Contributions from the employer
     -       (597,870 )      (597,870 ) 
Benefits paid from
      
the pension fund
     (615,377 )      609,975       (5,402 ) 
the Group
     (79,659 )      -       (79,659 ) 
Liabilities extinguished on settlements
     (2,830 )      -       (2,830 ) 
Liabilities assumed in a business combination (Note 29)
     204,975       -       204,975  
Exchange differences on foreign plans
     (14,144 )      32,035       17,891  
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2023
     10,201,794       (6,617,058 )      3,584,736  
  
 
 
   
 
 
   
 
 
 
Service cost
      
Current service cost
     139,168       -       139,168  
Past service cost and loss on settlements
     274       -       274  
Net interest expense (income)
     205,562       (144,003 )      61,559  
  
 
 
   
 
 
   
 
 
 
Recognized in profit or loss
     345,004       (144,003 )      201,001  
  
 
 
   
 
 
   
 
 
 
Remeasurement
      
Return on plan assets (excluding amounts included in net interest)
     -       (437,258 )      (437,258 ) 
Actuarial (gain) loss
      
Changes in financial assumptions
     (46,189 )      -       (46,189 ) 
Experience adjustments
     249,911       -       249,911  
 
 
  
Present Value

of the Defined

Benefit

Obligation
 
 
Fair Value of the

Plan Assets
 
 
Net Defined
Benefit

Liabilities
(Assets)
 
 
  
NT$
 
 
  NT$  
 
 
  NT$  
 
Changes in demographic assumptions
   $ (16,009 )    $ -     $ (16,009 ) 
  
 
 
   
 
 
   
 
 
 
Recognized in other comprehensive income
     187,713       (437,258 )      (249,545 ) 
  
 
 
   
 
 
   
 
 
 
Contributions from the employer
     -       (646,687 )      (646,687 ) 
Benefits paid from
      
the pension fund
     (539,124 )      539,124       -  
the Group
     (124,601 )      -       (124,601 ) 
Liabilities extinguished on settlements
     (5,836 )      566       (5,270 ) 
Liabilities assumed in a business combination (Note 29)
     158,053       -       158,053  
Exchange differences on foreign plans
     (99,106 )      51,006       (48,100 ) 
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2024
   $  10,123,897     $ (7,254,310 )    $  2,869,587  
  
 
 
   
 
 
   
 
 
 
Service cost
      
Current service cost
     131,232       -       131,232  
Past service cost and loss on settlements
     5,412       -       5,412  
Net interest expense (income)
     217,768       (157,517 )     60,251  
  
 
 
   
 
 
   
 
 
 
Recognized in profit or loss
     354,412       (157,517 )     196,895  
  
 
 
   
 
 
   
 
 
 
Remeasurement
      
Return on plan assets (excluding amounts included in net interest)
     -       (379,292 )     (379,292 )
Actuarial (gain) loss
      
Changes in financial assumptions
     47,483       -       47,483  
Experience adjustments
     1,579,901       -       1,579,901  
Changes in demographic assumptions
     (7,700 )     -       (7,700 )
  
 
 
   
 
 
   
 
 
 
Recognized in other comprehensive income
     1,619,684       (379,292 )     1,240,392  
  
 
 
   
 
 
   
 
 
 
Contributions from the employer
     -       (584,566 )     (584,566 )
Benefits paid from
      
the pension fund
     (610,507 )     610,507       -  
the Group
     (76,194 )     -       (76,194 )
Liabilities extinguished on settlements
     (4,307 )     -       (4,307 )
Exchange differences on foreign plans
     24,185       (53,967 )     (29,782 )
  
 
 
   
 
 
   
 
 
 
Balance at December 31, 2025
   $ 11,431,170     $ (7,819,145 )   $ 3,612,025  
  
 
 
   
 
 
   
 
 
 
 
 
  
Present Value

of the Defined
Benefit
Obligation
 
 
Fair Value of the
Plan Assets
 
 
Net Defined
Benefit

Liabilities
(Assets)
 
 
  
US$ (Note 4)
 
 
US$ (Note 4)
 
 
 US$ (Note 4) 
 
Balance at December 31, 2024
   $ 322,725     $ (231,249 )   $ 91,476  
  
 
 
   
 
 
   
 
 
 
Service cost
      
Current service cost
     4,183       -       4,183  
Past service cost and loss on settlements
     173       -       173  
Net interest expense (income)
     6,942       (5,021 )     1,921  
  
 
 
   
 
 
   
 
 
 
Recognized in profit or loss
     11,298       (5,021 )     6,277  
  
 
 
   
 
 
   
 
 
 
Remeasurement
      
Return on plan assets (excluding amounts included in net interest)
     -       (12,091 )     (12,091 ) 
Actuarial (gain) loss
      
Changes in financial assumptions
     1,514       -       1,514  
Experience adjustments
     50,363       -       50,363  
Changes in demographic assumptions
     (246 )      -       (246 )
  
 
 
   
 
 
   
 
 
 
Recognized in other comprehensive income
     51,631       (12,091 )     39,540  
  
 
 
   
 
 
   
 
 
 
Contributions from the employer
     -       (18,635 )      (18,635 )
Benefits paid from
      
the pension fund
     (19,461 )     19,461       -  
the Group
     (2,429 )     -       (2,429 )
 
 
  
Present Value

of the Defined
Benefit
Obligation
 
 
Fair Value of the
Plan Assets
 
 
Net Defined
Benefit

Liabilities
(Assets)
 
 
  
US$ (Note 4)
 
 
US$ (Note 4)
 
 
 US$ (Note 4) 
 
Liabilities extinguished on settlements
   $ (137 )  $ -   $ (137 )
Exchange differences on foreign plans
     771     (1,720 )    (949 ) 
 
 
 
      
 
 
      
 
 
 
Balance at December 31, 2025
   $ 364,398   $ (249,255 ) $ 115,143  
 
 
 
 
 
 
      
 
 
 
Summary of Fair Value of the Plan Assets by Major Categories
  5)
The fair value of the plan assets by major categories at each balance sheet date was as follows:
 
   
December 31
 
   
2024
    
2025
 
   
NT$
    
NT$
    
US$ (Note 4)
 
Cash
  $    2,394,070      $    2,409,488      $ 76,809  
Equity instruments
    3,305,989        3,810,844        121,480  
Debt instruments
    1,246,361        1,370,940        43,702  
Others
    307,890        227,873        7,264  
 
 
 
    
 
 
    
 
 
 
Total
  $ 7,254,310      $ 7,819,145      $      249,255  
 
 
 
    
 
 
    
 
 
 
Summary of Key Assumptions Used for the Actuarial Valuations
  8)
The present value of the defined benefit obligation and the related current service cost and past service cost were measured using the Projected Unit Credit Method. Except the pension plans for executive managers, the key assumptions used for the actuarial valuations were as follow:
 
    
December 31
    
  2024  
  
  2025  
Discount rates (%)
  
0.81-6.50
  
1.08-6.15
Expected rates of salary increase (%)
   1.00-5.00    1.00-5.00
Summary of Sensitivity Analysis on Defined Obligations
    
December 31
 
    
2024
   
2025
 
    
   NT$   
   
   NT$   
   
US$ (Note 4)
 
Discount rate
      
0.5% higher
   $ (641,795 )    $ (739,299 )    $ (23,567 ) 
  
 
 
   
 
 
   
 
 
 
0.5% lower
   $ 687,690     $ 794,986     $ 25,342  
  
 
 
   
 
 
   
 
 
 
Expected rates of salary increase
      
0.5% higher
   $ 646,395     $ 757,187     $ 24,137  
  
 
 
   
 
 
   
 
 
 
0.5% lower
   $     (607,402 )    $     (707,930 )    $      (22,567 ) 
  
 
 
   
 
 
   
 
 
 
Summary of Maturity Analysis of Undiscounted Pension Benefit
  9)
Maturity analysis of undiscounted pension benefit
 
    
December 31
 
    
2024
   
2025
 
    
   NT$   
   
   NT$   
   
US$ (Note 4)
 
No later than 1 year
   $ 677,634     $ 760,181     $ 24,233  
Later than 1 year but not later than 5 years
     2,870,872       2,931,962       93,464  
Later than 5 years
     9,579,301       13,133,817       418,674  
  
 
 
   
 
 
   
 
 
 
   $    13,127,807      $    16,825,960      $      536,371