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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Text Block [Abstract]

Detail Information of Subsidiaries

The detail information of the subsidiaries at the end of reporting period was as follows:

Percentage of Ownership

Name of Investor

Name of Investee

Main Businesses and Products

Establishment

and Operating
Location

December 31,

2019

December 31,

2020

Note

TSMC

TSMC North America

Selling and marketing of integrated circuits and other semiconductor devices

San Jose, California, U.S.A.

100%

—

TSMC Europe B.V. (TSMC Europe)

Customer service and supporting activities

Amsterdam, the Netherlands

100%

TSMC Japan Limited (TSMC Japan)

Customer service and supporting activities

Yokohama, Japan

100%

TSMC Design Technology Japan, Inc. (TSMC JDC)

Engineering support activities

Yokohama, Japan

—

100%

a), b)

TSMC Korea Limited (TSMC Korea)

Customer service and supporting activities

Seoul, Korea

100%

TSMC

TSMC Partners, Ltd. (TSMC Partners)

Investing in companies involved in the design, manufacture, and other related business in the semiconductor industry and other investment activities

Tortola, British Virgin Islands

100%

TSMC Global, Ltd. (TSMC Global)

Investment activities

Tortola, British Virgin Islands

100%

—

TSMC China Company Limited (TSMC China)

Manufacturing, selling, testing and computer-aided design of integrated circuits and other semiconductor devices

Shanghai, China

100%

—

TSMC Nanjing Company Limited (TSMC Nanjing)

Manufacturing, selling, testing and computer-aided design of integrated circuits and other semiconductor devices

Nanjing, China

100%

VisEra Technologies Company Ltd. (VisEra Tech)

Engaged in manufacturing electronic spare parts and in researching, developing, designing, manufacturing, selling, packaging and testing of color filter

Hsin-Chu,

Taiwan

87%

—

TSMC Arizona Corporation (TSMC Arizona)

Manufacturing, selling and testing of integrated circuits and other semiconductor devices

Phoenix, Arizona, U.S.A.

—

100%

a), c)

VentureTech Alliance Fund II, L.P. (VTAF II)

Investing in new

start-up

technology companies

Cayman Islands

98%

VentureTech Alliance Fund III, L.P. (VTAF III)

Investing in new

start-up

technology companies

Cayman Islands

98%

TSMC Partners

TSMC Development, Inc. (TSMC Development)

Investing in companies involved in the manufacturing related business in the semiconductor industry

Delaware, U.S.A.

100%

—

TSMC Technology, Inc. (TSMC Technology)

Engineering support activities

Delaware, U.S.A.

100%

TSMC Design Technology Canada Inc. (TSMC Canada)

Engineering support activities

Ontario, Canada

100%

InveStar Semiconductor Development Fund, Inc. (ISDF)

Investing in new

start-up

technology companies

Cayman Islands

97%

—

a) , e)

InveStar Semiconductor Development Fund, Inc. (II) LDC. (ISDF II)

Investing in new

start-up

technology companies

Cayman Islands

97%

—

a) , e)

TSMC Development

WaferTech, LLC (WaferTech)

Manufacturing, selling and testing of integrated circuits and other semiconductor devices

Washington, U.S.A.

100%

—

VTAF III

Growth Fund Limited (Growth Fund)

Investing in new

start-up

technology companies

Cayman Islands

100%

Note a:

This is an immaterial subsidiary for which the consolidated financial statements are not audited by the Company’s independent auditors.

Note b:

TSMC JDC has been established in January 2020.

Note c:

TSMC Arizona has been established in November 2020. Under the terms of the development agreement entered into between TSMC Arizona and the City of Phoenix in March 2021, the City of Phoenix commits approximately US$205 million toward various public infrastructure projects in the area of the proposed manufacturing facility, conditioned on TSMC Arizona’s achieving a minimum project scale with defined spending and job

creation thresholds.

Note d:

Under the investment agreement entered into with the municipal government of Nanjing, China, the Company will make an investment in Nanjing in the amount of approximately US$3 billion to establish a subsidiary operating a 300mm wafer fab with the capacity of 20,000

12-inch

wafers per month, and a design service center. The aforementioned 300mm wafer fab has reached the capacity of 20,000

12-inch

wafers per month.

Note e:

ISDF and ISDF II have completed the liquidation procedures in November 2020.