v3.26.1
Financial Risk and Fair Value Disclosures
12 Months Ended
Dec. 31, 2025
Disclosure of detailed information about financial instruments [abstract]  
Financial Risk and Fair Value Disclosures
11.
FINANCIAL RISK AND FAIR VALUE DISCLOSURES
 
  (1)
Categories of financial instruments
 
     As of December 31,  
Financial Assets
   2024      2025  
     NT$      NT$  
     (In Thousands)      (In Thousands)  
Financial assets at fair value through profit or loss
   $ 18,456,932      $ 18,153,916  
Financial assets at fair value through other comprehensive income
     17,209,328        13,774,749  
Financial assets measured at amortized cost
     
Cash and cash equivalents (cash on hand excluded)
     104,993,968        110,653,397  
Receivables
     34,994,933        33,731,393  
Refundable deposits
     1,992,400        1,643,661  
Other financial assets
     3,739,224        12,506,177  
  
 
 
    
 
 
 
Total
   $ 181,386,785      $ 190,463,293  
  
 
 
    
 
 
 
 
     As of December 31,  
Financial Liabilities
   2024      2025  
     NT$      NT$  
     (In Thousands)      (In Thousands)  
Financial liabilities at fair value through profit or loss
   $ 901,000      $ 57,163  
Financial liabilities measured at amortized cost
     
Short-term loans
     8,515,000        8,408,772  
Payables
     42,259,798        45,297,553  
Bonds payable (current portion included)
     30,051,568        50,228,305  
Long-term loans (current portion included)
     36,476,909        14,331,790  
Lease liabilities
     6,419,016        6,000,846  
Guarantee deposits (current portion included)
     42,874,494        40,867,857  
  
 
 
    
 
 
 
Total
   $ 167,497,785      $ 165,192,286  
  
 
 
    
 
 
 
 
  (2)
Financial risk management objectives and policies
The Company’s risk management objectives are to manage the market risk, credit risk and liquidity risk related to its operating activities. The Company identifies, measures and manages the aforementioned risks based on policy and risk preference.
 
The Company has established appropriate policies, procedures and internal controls for financial risk management. Before entering into significant financial activities, approval process by the Board of Directors and Audit Committee must be carried out based on related protocols and internal control procedures. The Company complies with its financial risk management policies at all times.
 
  (3)
Market risk
Market risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risks comprise currency risk, interest rate risk and other price risk (such as equity price risk).
Foreign currency risk
The Company’s exposure to the risk of changes in foreign exchange rates relates primarily to the Company’s operating activities (when revenue or expense is denominated in a different currency from the Company’s functional currency) and the Company’s net investments in foreign subsidiaries.
The Company applies natural hedges on the foreign currency risk arising from purchases or sales, and utilizes spot or forward exchange contracts to manage foreign currency risk and the net effect of the risks related to monetary financial assets and liabilities is minor. The notional amounts of the foreign currency contracts are the same as the amount of the hedged items. In principle, the Company does not carry out any forward exchange contracts for uncertain commitments. Furthermore, as net investments in foreign subsidiaries are for strategic purposes, they are not hedged by the Company.
The foreign currency sensitivity analysis of the possible change in foreign exchange rates on the Company’s profit is performed on significant monetary items denominated in foreign currencies as of the end of the reporting period. When NTD strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2023, 2024 and 2025 decreases/increases by NT$620 million, NT$
1,095
 million and NT$
534
 million, respectively. When RMB strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2023, 2024 and 2025 decreases/increases by NT$582 million, NT$615 million and NT$175 million, respectively. When JPY strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2023, 2024 and 2025 decreases/increases by NT$290 million, NT$237 million and NT$206 million, respectively.
 
Interest rate risk
The Company is exposed to interest rate risk arising from borrowing at floating interest rates. All of the Company’s bonds have fixed interest rates and are measured at amortized cost. As such, changes in interest rates would not affect the future cash flows. On the other hand, as the interest rates of the Company’s short-term and long-term bank loans are floating, changes in interest rates would affect the future cash flows but not the fair value. Please refer to Note 6(11), (13) and (14) for the range of interest rates of the Company’s bonds and bank loans.
At the reporting dates, a change of 10 basis points of interest rate in a reporting period could cause the profit for the years ended December 31, 2023, 2024 and 2025 to decrease/increase by NT$36 million, NT$45 million and NT$23 million, respectively.
Equity price risk
The Company’s listed and unlisted equity securities, investments in convertible bonds and exchange right of the exchangeable bonds issued are susceptible to market price risk arising from uncertainties about future performance of equity markets. The Company’s equity investments are classified as financial assets at fair value through profit or loss and financial assets at fair value through other comprehensive income, the investments in convertible bonds which contain the right of conversion to equity instruments are classified as financial assets at fair value through profit or loss, and the exchange right of the exchangeable bonds issued is classified as financial liabilities at fair value through profit or loss as it does not satisfy the definition of an equity component. Please refer to Note 6(2), (3) and (12) for the relevant information.
The sensitivity analysis for the equity instruments is based on the change in fair value as of the reporting date. A change of 5% in the price of the aforementioned financial assets at fair value through profit or loss of listed companies could increase/decrease the Company’s profit for the years ended December 31, 2023, 2024 and 2025 by NT$270 million, NT$261 million and NT$268 million, respectively. A change of 5% in the price of the aforementioned financial assets at fair value through other comprehensive income of listed companies could increase/decrease the Company’s other comprehensive income (loss) for the years ended December 31, 2023, 2024 and 2025 by NT$722 million, NT$689 million and NT$531 million, respectively.
Please refer to Note 11(7) for sensitivity analysis information of other equity instruments or derivatives that are linked to such equity instruments whose fair value measurement is categorized under Level 3.
 
  (4)
Credit risk management
The Company only trades with approved and creditworthy third parties. Where the Company trades with third parties which have less credit, it will request collateral from them. It is the Company’s policy that all customers who wish to trade on credit terms are subject to credit verification procedures. In addition, notes and accounts receivable balances are monitored on an ongoing basis to decrease the Company’s exposure to credit risk.
The Company mitigates the credit risks from financial institutions by limiting its counter parties to only reputable domestic or international financial institutions with good credit standing and spreading its holdings among various financial institutions. The Company’s exposure to credit risk arising from the default of counter-parties is limited to the carrying amount of these instruments.
As of December 31, 2024 and 2025, accounts receivable from the top ten customers represent 66% and 61% of the total accounts receivable of the Company, respectively. The credit concentration risk of other accounts receivable is insignificant.
 
  (5)
Liquidity risk management
The Company’s objectives are to maintain a balance between continuity of funding and flexibility through the use of cash and cash equivalents, bank loans, bonds and lease.
The table below summarizes the maturity profile of the Company’s financial liabilities based on the contractual undiscounted payments and contractual maturity:
 
     As of December 31, 2024  
     Less than
1 year
    2 to 3
years
     4 to 5
years
     > 5 years      Total  
     NT$     NT$      NT$      NT$      NT$  
     (In Thousands)     (In Thousands)      (In Thousands)      (In Thousands)      (In Thousands)  
Non-derivative
financial liabilities
             
Short-term loans
   $ 8,683,215     $ —       $ —       $ —       $ 8,683,215  
Payables
     42,136,632       —         —         —         42,136,632  
Bonds payable (Note A)
     340,976       16,675,030        12,146,745        2,118,683        31,281,434  
Long-term loans
     6,354,561       11,490,087        21,478,391        93,106        39,416,145  
Lease liabilities
     830,618       1,509,438        1,437,870        4,442,706        8,220,632  
Guarantee deposits
     921,134       4,571,633        27,522,150        9,859,577        42,874,494  
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
Total
   $ 59,267,136     $ 34,246,188      $ 62,585,156      $ 16,514,072      $ 172,612,552  
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
Derivative financial liabilities
             
Forward exchange contracts
             
Net settlement-outflow
   $ (1,039 )    $ —       $ —       $ —       $ (1,039 ) 
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
     As of December 31, 2025  
     Less than
1 year
    2 to 3
years
     4 to 5
years
     > 5 years      Total  
     NT$     NT$      NT$      NT$      NT$  
     (In Thousands)     (In Thousands)      (In Thousands)      (In Thousands)      (In Thousands)  
Non-derivative
financial liabilities
             
Short-term loans
   $ 8,589,773     $ —       $ —       $ —       $ 8,589,773  
Payables
     45,055,193       —         —         —         45,055,193  
Bonds payable (Note A)
     17,033,209       25,278,203        7,958,238        2,104,403        52,374,053  
Long-term loans
(Note B)
     3,319,372       8,227,746        3,612,205        24,510        15,183,833  
Lease liabilities
     805,290       1,470,303        1,434,794        3,970,634        7,681,021  
Guarantee deposits
     1,061,929       19,143,652        13,847,566        6,814,710        40,867,857  
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
Total
   $ 75,864,766     $ 54,119,904      $ 26,852,803      $ 12,914,257      $ 169,751,730  
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
Derivative financial liabilities
             
Forward exchange contracts
             
Net settlement-outflow
   $ (2,512 )    $ —       $ —       $ —       $ (2,512 ) 
  
 
 
   
 
 
    
 
 
    
 
 
    
 
 
 
 
Note A: UMC issued unsecured exchangeable bonds where the bondholders may exchange the bonds at any time on or after October 8, 2021 and prior to June 27, 2026 into NOVATEK common shares which UMC holds and accounts for as equity instruments investments measured at fair value through other comprehensive income. The balances of equity instruments investments measured at fair value through other comprehensive income were NT$5,893 million and NT$4,630 million as of December 31, 2024 and 2025, respectively. Please refer to Note 6(13) for the terms of redemption.
Note B: For the long-term loans with contractual maturity within 2 to 3 years and 4 to 5 years in 2025, the Company made repayments in the amounts of NT$
1,039 
million and NT$800 million from January 1 to April 30, 2026.
 
  (6)
Foreign currency risk management
UMC entered into forward exchange contracts for hedging the exchange rate risk arising from the net monetary assets or liabilities denominated in foreign currency. The details of forward exchange contracts entered into by UMC are summarized as follows:
As of December
 31, 2024
 
Type
  
Notional Amount
  
Contract Period
Forward exchange contracts
  
Sell USD 24 million
   December 27, 2024 - January 21, 2025
As of December
 31, 2025
 
Type
  
Notional Amount
  
Contract Period
Forward exchange contracts
  
Sell USD 22 million
   December 8, 2025 –January 23, 2026
 
  (7)
Fair value measurement
Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or in the absence of a principal market, in the most advantageous market for the asset or liability.
The principal or the most advantageous market must be accessible by the Company.
The fair value of an asset or a liability is measured using the assumptions that market participants would use when pricing the asset or liability, assuming that market participants act in their economic best interest.
A fair value measurement of a
non-financial
asset takes into account a market participant’s ability to generate economic benefits by using the asset in its highest and best use or by selling it to another market participant that would use the asset in its highest and best use.
The Company uses valuation techniques that are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs.
All assets and liabilities for which fair value is measured or disclosed in the financial statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole:
Level 1 — Quoted (unadjusted) market prices in active markets for identical assets or liabilities,
Level 2 — Valuation techniques for which the lowest level input that is significant to the fair value measurement is directly or indirectly observable,
Level 3 — Valuation techniques for which the lowest level input that is significant to the fair value measurement is unobservable.
For assets and liabilities that are recognized in the financial statements on a recurring basis, the Company determines whether transfers have occurred between levels in the hierarchy by
re-assessing
categorization (based on the lowest level input that is significant to the fair value measurement as a whole) at the end of each reporting period.
 
  a.
Assets and liabilities measured and recorded at fair value on a recurring basis:
 
     As of December 31, 2024  
     Level 1      Level 2      Level 3      Total  
     NT$      NT$      NT$      NT$  
     (In Thousands)      (In Thousands)      (In Thousands)      (In Thousands)  
Financial assets:
           
Financial assets at fair value through profit or loss, current
   $ 606,016      $ 2      $ —       $ 606,018  
Financial assets at fair value through profit or loss, noncurrent
     5,703,325        18,800        12,128,789        17,850,914  
Financial assets at fair value through other comprehensive income, current
     5,893,377        —         —         5,893,377  
Financial assets at fair value through other comprehensive income, noncurrent
     7,879,553        —         3,436,398        11,315,951  
Financial liabilities:
           
Financial liabilities at fair value through profit or loss, current
     —         1,039        899,961        901,000  
     As of December 31, 2025  
     Level 1      Level 2      Level 3      Total  
     NT$      NT$      NT$      NT$  
     (In Thousands)      (In Thousands)      (In Thousands)      (In Thousands)  
Financial assets:
           
Financial assets at fair value through profit or loss, current
   $ 468,010      $ 1,859      $ 98,652      $ 568,521  
Financial assets at fair value through profit or loss, noncurrent
     5,838,381        20,600        11,726,414        17,585,395  
Financial assets at fair value through other comprehensive income, current
     4,630,441        —         —         4,630,441  
Financial assets at fair value through other comprehensive income, noncurrent
     5,990,762        —         3,153,546        9,144,308  
Financial liabilities:
           
Financial liabilities at fair value through profit or loss, current
     —         2,512        54,651        57,163  
 
Fair values of financial assets at fair value through profit or loss and financial assets at fair value through other comprehensive income that are categorized into Level 1 are based on the quoted market prices in active markets. If there is no active market, the Company estimates the fair value by using the valuation techniques (income approach and market approach) in consideration of cash flow forecast, recent fund raising activities, valuation of similar companies, individual company’s development, market conditions and other economic indicators.
If there are restrictions on the sale or transfer of a financial asset, which are a characteristic of the asset, the fair value of the asset will be determined based on similar but unrestricted financial assets’ quoted market price with appropriate discounts for the restrictions. To measure fair values, if the lowest level input that is significant to the fair value measurement is directly or indirectly observable, then the financial assets are classified as Level 2 of the fair value hierarchy, otherwise as Level 3.
During the years ended December 31, 2024 and 2025, there were
no
transfers between Level 1 and Level 2 fair value measurements.
 
Reconciliation for fair value measurement in Level 3 fair value hierarchy were as follows:
 
     Financial assets at fair value through profit or loss     Financial assets at fair value through
other comprehensive income
 
     Common stock     Preferred stock     Funds     Convertible
bonds
     Others     Total     Common stock      Preferred stock      Total  
     NT$     NT$     NT$     NT$      NT$     NT$     NT$      NT$      NT$  
     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)      (In Thousands)     (In Thousands)     (In Thousands)      (In Thousands)      (In Thousands)  
As of January 1, 2024
   $ 3,036,255     $ 2,786,634     $ 4,274,896     $ —       $ 153,300     $ 10,251,085     $ 3,062,325      $ 175,063      $ 3,237,388  
Recognized in profit (loss)
     (119,584 )      187,131       128,617       3,120        4,140       203,424       —         —         —   
Recognized in other comprehensive income (loss)
     —        —        —        —         —        —        104,499        29,817        134,316  
Acquisition
     505,538       639,779       1,133,312       51,191        —        2,329,820       64,694        —         64,694  
Disposal
     (78,234 )      (311,066 )      (81,371 )      —         (96,312 )      (566,983 )      —         —         —   
Return of capital
     (83 )      —        (12,405 )      —         —        (12,488 )      —         —         —   
Transfer out of Level 3
     (377,121 )      —        —        —         —        (377,121 )      —         —         —   
Exchange effect
     41,412       101,455       153,398       455        4,332       301,052       —         —         —   
  
 
 
   
 
 
   
 
 
   
 
 
    
 
 
   
 
 
   
 
 
    
 
 
    
 
 
 
As of December 31, 2024
   $ 3,008,183     $ 3,403,933     $ 5,596,447     $ 54,766      $ 65,460     $ 12,128,789     $ 3,231,518      $ 204,880      $ 3,436,398  
  
 
 
   
 
 
   
 
 
   
 
 
    
 
 
   
 
 
   
 
 
    
 
 
    
 
 
 
 
     Financial liabilities at fair
value through profit or loss
 
     Derivatives  
     NT$  
     (In Thousands)  
As of January 1, 2024
   $ 1,019,362  
Recognized in loss (profit)
     (119,401 ) 
  
 
 
 
As of December 31, 2024
   $ 899,961  
  
 
 
 
 
     Financial assets at fair value through profit or loss     Financial assets at fair value through
other comprehensive income
 
     Common stock     Preferred stock     Funds     Convertible
bonds
    Others     Total     Common stock     Preferred stock     Total  
     NT$     NT$     NT$     NT$     NT$     NT$     NT$     NT$     NT$  
     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)     (In Thousands)  
As of January 1, 2025
   $ 3,008,183     $ 3,403,933     $ 5,596,447     $ 54,766     $ 65,460     $ 12,128,789     $ 3,231,518     $ 204,880     $ 3,436,398  
Recognized in profit (loss)
     (38,312 )      298,725       (565,008 )      194       (2,760 )      (307,161 )      —        —        —   
Recognized in other comprehensive income (loss)
     —        —        —        —        —        —        (270,121 )      (2,072 )      (272,193 ) 
Acquisition
     264,125       281,776       292,459       147,571       9,903       995,834       150,000       —        150,000  
Disposal
     (10,142 )      (66,319 )      (372,135 )      (103,104 )      —        (551,700 )      —        —        —   
Return of capital
     —        —        (19,777 )      —        —        (19,777 )      (160,659 )      —        (160,659 ) 
Transfer out of Level 3
     (194,460 )      —        —        —        —        (194,460 )      —        —        —   
Exchange effect
     (29,257 )      (77,041 )      (119,443 )      (775 )      57       (226,459 )      —        —        —   
  
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
As of December 31, 2025
   $ 3,000,137     $ 3,841,074     $ 4,812,543     $ 98,652     $ 72,660     $ 11,825,066     $ 2,950,738     $ 202,808     $ 3,153,546  
  
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
 
     Financial liabilities at fair
value through profit or loss
 
     Derivatives  
     NT$  
     (In Thousands)  
As of January 1, 2025
   $ 899,961  
Recognized in loss (profit)
     (845,310 ) 
  
 
 
 
As of December 31, 2025
   $ 54,651  
  
 
 
 
The total profit (loss) of NT$(1,329) million, NT$128 million and NT$(311) million for the years ended December 31, 2023, 2024 and 2025, were included in profit or loss that is attributable to the change in unrealized gains or losses relating to those financial assets without quoted market prices held at the end of the reporting period.
The total profit (loss) of NT$(581) million, NT$119 million and NT$845 million for the years ended December 31, 2023, 2024 and 2025, were included in profit or loss that is attributable to the change in unrealized gains or losses relating to those financial liabilities without quoted market prices held at the end of the reporting period.
The Company’s policy to recognize the transfer into and out of fair value hierarchy levels is based on the event or changes in circumstances that caused the transfer.
 
Significant unobservable inputs of fair value measurement in Level 3 fair value hierarchy were as follows:
 
As of December 31, 2024
Category
  
Valuation technique
  
Significant
unobservable inputs
  
Quantitative
information
  
Interrelationship
between inputs and fair
value
  
Sensitivity analysis of
interrelationship between
inputs and fair value
Unlisted stock    Market approach   
Discount for lack of marketability
   0% - 50%   
The greater degree of lack of marketability, the lower the estimated fair value is determined.
  
A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) for the year ended December 31, 2024 by NT$309 million and NT$244 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2024 by NT$239 million.
Fund    Net asset value approach   
N/A
   N/A   
N/A
  
N/A
Convertible bonds
  
Binomial tree valuation model
  
Volatility
   54.85%   
The higher the volatility, the higher the estimated fair value is determined.
  
A change of 5% in the volatility could increase/decrease the Company’s profit (loss) for the year ended December 31, 2024 by NT$
0.3
 million and NT$
0.4
 million, respectively.
Embedded derivatives in exchangeable bonds
  
Binomial tree valuation model
  
Volatility
   28.06%   
The higher the volatility, the higher the estimated fair value is determined.
  
A change of 5% in the volatility
could
decrease/increase the Company’s profit (loss) for the year ended December 31, 2024 by NT$
97
million and NT$
113
 million, respectively.
 
 
As of December 31, 2025
Category
  
Valuation technique
  
Significant
unobservable inputs
  
Quantitative
information
  
Interrelationship
between inputs and fair
value
  
Sensitivity analysis of
interrelationship between
inputs and fair value
Unlisted stock    Market approach   
Discount for lack of marketability
   0% - 60%   
The greater degree of lack of marketability, the lower the estimated fair value is determined.
  
A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) for the year ended December 31, 2025 by NT$337 million and NT$306 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2025 by NT$213 million.
Fund    Net asset value approach   
N/A
   N/A   
N/A
  
N/A
Embedded derivatives in exchangeable bonds
  
Binomial tree valuation model
  
Volatility
  
25.06
%
  
The higher the volatility, the higher the estimated fair value is determined.
  
A change of 5% in the volatility could decrease/increase the Company’s profit (loss) for the year ended December 31, 2025 by NT$41 million and NT$31 million, respectively.
 
  b.
Assets and liabilities not recorded at fair value but for which fair value is disclosed:
The fair value of bonds payable is estimated by the market price or using a valuation model. The model uses market-based observable inputs including share price, exchange price, volatility, risk-free interest rates and risk discount rates. The fair value of long-term loans is determined using discounted cash flow model, based on the Company’s current incremental borrowing rates of similar loans.
The fair values of the Company’s cash and cash equivalents, receivables, refundable deposits, other financial assets, short-term loans, payables and guarantee deposits approximate their carrying amount.
        
As of December 31, 2024
                                 
            Fair value measurements during
reporting period using
        
Items
   Fair value      Level 1     Level 2      Level 3      Carrying
amount
 
     NT$
(In Thousands)
     NT$
(In Thousands)
    NT$
(In Thousands)
     NT$
(In Thousands)
     NT$
(In Thousands)
 
Bonds payable (current portion included)
   $ 30,020,005      $ 24,409,952     $ 5,610,053      $ —       $ 30,051,568  
Long-term loans (current portion included)
     36,476,909        —        36,476,909        —         36,476,909  
 
 
        
As of December 31, 2025
  
 
 
  
 
 
 
 
 
  
 
 
  
 
 
 
  
 
 
  
Fair value measurements during
reporting period using
 
  
 
 
Items
  
Fair value
 
  
Level 1
 
 
Level 2
 
  
Level 3
 
  
Carrying
amount
 
 
  
NT$
(In Thousands)
 
  
NT$
(In Thousands)
 
 
NT$
(In Thousands)
 
  
NT$
(In Thousands)
 
  
NT$
(In Thousands)
 
Bonds payable (current portion included)
   $ 50,253,543      $ 44,541,910     $ 5,711,633      $ —       $ 50,228,305  
Long-term loans (current portion included)
     14,331,790        —        14,331,790        —         14,331,790