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Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2023

Disclosure of subsidiaries [Line Items]


			Percentage of Ownership interests
			December 31
Name of Investor	Name of Investee	Main Businesses and Products	2022		2023		Note
Chunghwa Telecom Co., Ltd.	Senao International Co., Ltd. (“SENAO”)	Handset and peripherals retailer, sales of CHT mobile phone plans as an agent		28		28	a)
	Light Era Development Co., Ltd. (“LED”)	Planning and development of real estate and intelligent buildings, and property management		100		100
	Donghwa Telecom Co., Ltd. (“DHT”)	International private leased circuit, IP VPN service, and IP transit services		100		100
	Chunghwa Telecom Singapore Pte., Ltd. (“CHTS”)	International private leased circuit, IP VPN service, and IP transit services		100		100
	Chunghwa System Integration Co., Ltd. (“CHSI”)	Providing system integration services and telecommunications equipment		100		100
	Chunghwa Investment Co., Ltd. (“CHI”)	Investment		89		89
	CHIEF Telecom Inc. (“CHIEF”)	Network integration, internet data center (“IDC”), communications integration and cloud application services		56		56	b)
	CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”)	Digital information supply services and advertisement services		100		100
	Prime Asia Investments Group Ltd. (“Prime Asia”)	Investment		100		100
	Spring House Entertainment Tech. Inc. (“SHE”)	Software design services, internet contents production and play, and motion picture production and distribution		56		56
	Chunghwa Telecom Global, Inc. (“CHTG”)	International private leased circuit, internet services, and transit services		100		100
	Chunghwa Telecom Vietnam Co., Ltd. (“CHTV”)	Intelligent energy saving solutions, international circuit, and information and communication technology (“ICT”) services		100		100
	Smartfun Digital Co., Ltd. (“SFD”)	Providing diversified family education digital services		65		65
	Chunghwa Telecom Japan Co., Ltd. (“CHTJ”)	International private leased circuit, IP VPN service, and IP transit services		100		100
	Chunghwa Sochamp Technology Inc. (“CHST”)	Design, development and production of Automatic License Plate Recognition software and hardware		37		37	c)
	Honghwa International Co., Ltd. (“HHI”)	Telecommunications engineering, sales agent of mobile phone plan application and other business services, etc.		100		100
	Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”)	Production and sale of electronic components and finished products		75		75	d)
	Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”)	International private leased circuit, IP VPN service, ICT and cloud VAS services		100		100

(Continued)


			Percentage of Ownership interests
			December 31
Name of Investor	Name of Investee	Main Businesses and Products	2022		2023		Note
	CHT Security Co., Ltd. (“CHTSC”)	Computing equipment installation, wholesale of computing and business machinery equipment and software, management consulting services, data processing services, digital information supply services and internet identity services		73		69	e)
	International Integrated Systems, Inc. (“IISI”)	IT solution provider, IT application consultation, system integration and package solution		51		51
Senao International Co., Ltd.	Senao International (Samoa) Holding Ltd. (“SIS”)	International investment		100		—	f)
	Youth Co., Ltd. (“Youth”)	Sale of information and communication technologies products		96		96
	Aval Technologies Co., Ltd. (“Aval”)	Sale of information and communication technologies products		100		100
	Senyoung Insurance Agent Co., Ltd. (“SENYOUNG”)	Property and liability insurance agency		100		100
Youth Co., Ltd.	ISPOT Co., Ltd. (“ISPOT”)	Sale of information and communication technologies products		100		100
	Youyi Co., Ltd. (“Youyi”)	Maintenance of information and communication technologies products		100		—	g)
Aval Technologies Co., Ltd.	Wiin Technology Co., Ltd. (“Wiin”)	Sale of information and communication technologies products		100		100
Senyoung Insurance Agent Co., Ltd.	Senaolife Insurance Agent Co., Ltd. (“Senaolife”)	Life insurance services		100		—	h)
CHIEF Telecom Inc.	Unigate Telecom Inc. (“Unigate”)	Telecommunications and internet service		100		100
	Chief International Corp. (“CIC”)	Telecommunications and internet service		100		100
	Shanghai Chief Telecom Co., Ltd. (“SCT”)	Telecommunications and internet service		49		49	i)
Chunghwa Investment Co., Ltd.	Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”)	Production and sale of semiconductor testing components and printed circuit board		34		34	j)
Chunghwa Precision Test Tech. Co., Ltd.	Chunghwa Precision Test Tech. USA Corporation (“CHPT (US)”)	Design and after-sale services of semiconductor testing components and printed circuit board		100		100
	CHPT Japan Co., Ltd. (“CHPT (JP)”)	Related services of electronic parts, machinery processed products and printed circuit board		100		100
	Chunghwa Precision Test Tech. International, Ltd. (“CHPT (International)”)	Wholesale and retail of electronic materials, and investment		100		100
	TestPro Investment Co., Ltd. (“TestPro”)	Investment		100		100	k)

(Continued)

           
          Percentage of Ownership interests

           
          December 31

          Name of Investor

          Name of Investee

          Main Businesses and Products

          2022

          2023

          Note

TestPro Investment Co., Ltd.

NavCore Tech. Co., Ltd. 
     (“NavCore”)

Sale and manufacturing of smart equipment, 
     smart factory software and hardware 
     integration and technical consulting service

54

54

l)

Senao International 
     (Samoa) Holding Ltd.

Senao International HK 
     Limited (“SIHK”)

International investment

100

—

m)

Prime Asia Investments 
     Group Ltd.

Chunghwa Hsingta Co., Ltd. 
     (“CHC”)

Investment

100

100

Chunghwa Hsingta Co., 
     Ltd.

Chunghwa Telecom (China) 
     Co., Ltd. (“CTC”)

Integrated information and communication 
     solution services for enterprise clients, 
     and intelligent energy network service

—

—

n)

Chunghwa Precision 
     Test Tech. 
     International, Ltd.

Shanghai Taihua Electronic 
     Technology Limited 
     (“STET”)

Design of printed circuit board and related 
     consultation service

100

100

Su Zhou Precision Test Tech. 
     Ltd. (“SZPT”)

Assembly processed of circuit board, 
     design of printed circuit board and 
     related consultation service

100

100

International Integrated 
     Systems, Inc.

Infoexplorer International Co., 
     Ltd.(“IESA”)

Investment

100

—

o)

IISI Investment Co., Ltd. 
     (“IICL”)

Investment

—

—

p)

Unitronics Technology Corp. 
     (“UTC”)

Development and maintenance of 
     information system

99.96

100

q)

Infoexplorer 
     International Co., 
     Ltd.

International Integrated 
     Systems (Hong Kong) 
     Limited (“IEHK”)

Investment and technical consulting service

100

—

r)

IISI Investment Co., 
     Ltd.

Leading Tech Co., Ltd. 
     (“LTCL”)

Investment

—

—

p)

Leading Tech Co., Ltd.

Leading Systems Co., Ltd. 
     (“LSCL”)

Investment

—

—

p)

(Concluded)

Chunghwa continues to control seven out of thirteen seats of the Board of Directors of SENAO through the support of large beneficial stockholders. As a result, the Company treated SENAO as a subsidiary.

CHIEF issued new shares in March 2022, December 2022 and December 2023 as its employees exercised options. Therefore, the Company’s ownership interest in CHIEF decreased to 58.67% and 58.63% as of December 31, 2022 and 2023, respectively.

Chunghwa did not participate in the capital increase of CHST in November 2022. Therefore, the Company’s ownership interest in CHST decreased to 37.09% as of December 31, 2023. However, Chunghwa continues to control three out of five seats of the Board of Directors of CHST. As a result, the Company treated CHST as a subsidiary.

CLPT issued new shares in May 2023 as its employees exercised options. Therefore, the Company’s ownership interest in CLPT decreased to 74.56% as of December 31, 2023.

CHTSC issued new shares in February 2022, May 2022, February 2023 and May 2023 as its employees exercised options. Therefore, the Company’s ownership interest in CHTSC decreased to 73.09% and 69.28% as of December 31, 2022 and 2023, respectively.

SIS reduced 96.26% of its capital to offset accumulated deficits in November 2022. The Company’s ownership interest in SIS remained the same. SIS completed its liquidation in September 2023.

Youyi completed its liquidation in November 2023.

In order to coordinate with financial planning and adjustment of organizational resources, the Board of Directors of SENYOUNG approved the merger with Senaolife. SENYOUNG was the surviving company. The merger was completed on May 1, 2023.

CHIEF has two out of three seats of the Board of Directors of SCT according to the mutual agreements among stockholders and gained control over SCT; hence, SCT is deemed as a subsidiary of the Company.

Though the Company’s ownership interest in CHPT is less than 50%, the management considered the absolute and relative size of ownership interest, and the dispersion of shares owned by the other stockholders and concluded that the Company has a sufficiently dominant voting interest to direct the relevant activities; hence, CHPT is deemed as a subsidiary of the Company.

CHPT invested and established TestPro in March 2022. CHPT obtained 100% ownership interest of TestPro.

TestPro invested and established NavCore in May 2022. TestPro obtained 54.25% ownership interest of NavCore.

SIHK completed its liquidation in July 2023.

CTC completed its liquidation in October 2022.

IESA completed its liquidation in September 2023.

IICL, LTCL and LSCL completed liquidation in September 2022.

IISI purchased shares of UTC in August 2023. Therefore, the Company’s ownership interest in UTC increased to 100% as of December 31, 2023.

IEHK completed its liquidation in June 2023.

Detailed Information of Equity Transactions

The detailed information of the equity transactions for the years ended December 31, 2021, 2022 and 2023 was as follows:


	Year Ended December 31, 2021
	CHIEF Share-Based Payment			CHTSC Share-Based Payment			IISI Share-Based Payment
	NT$			NT$			NT$
	(In Millions)
Cash consideration received from noncontrolling interests	$	29		$	21		$	4
The proportionate share of the carrying amount of the net assets of the subsidiary transferred to noncontrolling interests		(17	)		(19	)		(1	)
Differences arising from equity transactions	$	12		$	2		$	3

Line items for equity transaction adjustments
Additional paid-in capital - arising from changes in equities of subsidiaries	$	12		$	2		$	3


	Year Ended December 31, 2022
	CHIEF Share-Based Payment			CHTSC Share-Based Payment			Chunghwa Not Proportionately Participating in the Capital Increase of CHST
	NT$			NT$			NT$
	(In Millions)
Cash consideration received from noncontrolling interests	$	39		$	35		$	15
The proportionate share of the carrying amount of the net assets of the subsidiary transferred to noncontrolling interests		(17	)		(30	)		(10	)
Differences arising from equity transactions	$	22		$	5		$	5

Line items for equity transaction adjustments
Additional paid-in capital - arising from changes in equities of subsidiaries	$	22		$	5		$	5


	Year Ended December 31, 2023
	CHIEF Share-Based Payment			CHTSC Share-Based Payment			CLPT Share-Based Payment			Purchasing UTC shares
	NT$			NT$			NT$			NT$
	(In Millions)
Cash consideration received from (paid to) noncontrolling interests	$	8		$	15		$	1		$	—
The proportionate share of the carrying amount of the net assets of the subsidiary transferred from (to) noncontrolling interests		(2	)		(13	)		(1	)		—
Differences arising from equity transactions	$	6		$	2		$	—		$	—

Line items for equity transaction adjustments
Additional paid-in capital - arising from the difference between the consideration received or paid and the carrying amount of the subsidiaries’ net assets during actual disposal or acquisition	$	—		$	—		$	—		$	—
Additional paid-in capital - arising from changes in equities of subsidiaries	$	6		$	2		$	—		$	—

Less than wholly owned subsidiaries that have material noncontrolling interests [Member]

Disclosure of subsidiaries [Line Items]

Detail Information of Subsidiaries


	Place of Incorporation	Proportion of Ownership Interests and Voting Rights Held by Noncontrolling Interests
	and Principal	December 31
Subsidiaries	Place of Business	2022	2023
SENAO	Taiwan	72%	72%
CHPT	Taiwan	66%	66%


	Profit Allocated to Noncontrolling Interests						Accumulated Noncontrolling Interests
	Year Ended December 31						December 31
	2021		2022		2023		2022		2023
	NT$		NT$		NT$		NT$		NT$
	(In Millions)
SENAO	$	421	$	462	$	510	$	4,454	$	4,533
CHPT	$	588	$	496	$	15		5,235		4,994
Individually immaterial subsidiaries with noncontrolling interests								2,719		2,905
							$	12,408	$	12,432

Summarized Financial Information Before Intercompany Eliminations


	December 31
	2022		2023
	NT$		NT$
	(In Millions)
Current assets	$	7,249	$	6,540
Noncurrent assets	$	3,053	$	3,141
Current liabilities	$	3,714	$	2,982
Noncurrent liabilities	$	460	$	459
Equity attributable to the parent	$	1,674	$	1,707
Equity attributable to noncontrolling interests	$	4,454	$	4,533


	Year Ended December 31
	2021			2022			2023
	NT$			NT$			NT$
				(In Millions)
Revenues and income	$	31,302		$	31,602		$	31,675
Costs and expenses		30,715			30,958			30,964
Profit for the year	$	587		$	644		$	711

Profit attributable to the parent	$	166		$	182		$	201
Profit attributable to noncontrolling interests		421			462			510
Profit for the year	$	587		$	644		$	711

Other comprehensive income (loss) attributable to the parent	$	2		$	11		$	(9	)
Other comprehensive income (loss) attributable to noncontrolling interests		5			26			(23	)
Other comprehensive income (loss) for the year	$	7		$	37		$	(32	)

Total comprehensive income attributable to the parent	$	168		$	192		$	192
Total comprehensive income attributable to noncontrolling interests		426			488			487
Total comprehensive income for the year	$	594		$	680		$	679

Net cash flow from operating activities	$	654		$	(329	)	$	1,146
Net cash flow from investing activities		215			36			36
Net cash flow from financing activities		(690	)		(826	)		(873	)
Effect of exchange rate changes on cash and cash equivalents		—			1			—
Net cash inflow (outflow)	$	179		$	(1,118	)	$	309

Dividends paid to noncontrolling interests	$	278		$	371		$	408

Summarized financial information in respect of CHPT and its subsidiaries that has material noncontrolling interests is set out below. The summarized financial information below represented amounts before intercompany eliminations.


	December 31
	2022		2023
	NT$		NT$
	(In Millions)
Current assets	$	4,406	$	3,773
Noncurrent assets	$	4,631	$	4,499
Current liabilities	$	1,087	$	677
Noncurrent liabilities	$	26	$	23
Equity attributable to CHI	$	2,689	$	2,578
Equity attributable to noncontrolling interests	$	5,235	$	4,994


	Year Ended December 31
	2021			2022			2023
	NT$			NT$			NT$
				(In Millions)
Revenues and income	$	4,254		$	4,434		$	2,941
Costs and expenses		3,360			3,673			2,905
Profit for the year	$	894		$	761		$	36

Profit attributable to CHI	$	306		$	265		$	21
Profit attributable to noncontrolling interests		588			496			15
Profit for the year	$	894		$	761		$	36

Other comprehensive income (loss) attributable to CHI	$	(1	)	$	5		$	(1	)
Other comprehensive income (loss) attributable to noncontrolling interests		(2	)		7			(2	)
Other comprehensive income (loss) for the year	$	(3	)	$	12		$	(3	)

Total comprehensive income attributable to CHI	$	305		$	270		$	20
Total comprehensive income attributable to noncontrolling interests		586			503			13
Total comprehensive income for the year	$	891		$	773		$	33

Net cash flow from operating activities	$	1,090		$	1,401		$	325
Net cash flow from investing activities		(519	)		(1,011	)		(244	)
Net cash flow from financing activities		(414	)		(388	)		(409	)
Effect of exchange rate changes on cash and cash equivalents		(1	)		8			(2	)
Net cash inflow (outflow)	$	156		$	10		$	(330	)

Dividends paid to noncontrolling interests	$	259		$	293		$	253