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General Information (Tables)
 12 Months Ended
Dec. 31, 2022
Text block [abstract]  
Summary of Consolidated Subsidiaries
The consolidated subsidiaries as at December 31, 2021 and 2022, are as follows:
 
           
Controlling percentage
ownership
 1
(%)
      
Subsidiary
  
Type of business
  
Location
  
December 31,
2021
    
December 31,
2022
    
Closing
month
KT Linkus Co., Ltd.   Public telephone maintenance   Korea     92.4 %      92.4 %    December
KT Submarine Co., Ltd.
2,4
   Submarine cable construction and maintenance   Korea     39.3 %      32.9 %    December
KT Telecop Co., Ltd.   Security service   Korea     86.8 %      86.8 %    December
KT Alpha Co., Ltd. (KT Hitel Co., Ltd.)
4
   Data communication   Korea     73.0 %      73.0 %    December
KT Service Bukbu Co., Ltd.   Opening services of fixed line   Korea     67.3 %      67.3 %    December
KT Service Nambu Co., Ltd.   Opening services of fixed line   Korea     77.3 %      77.3 %    December
KT Commerce Inc.   B2C, B2B service   Korea     100.0 %      100.0 %    December
KT Strategic Investment Fund No.2   Investment fund   Korea     100.0 %      100.0 %    December
KT Strategic Investment Fund No.3   Investment fund   Korea     100.0 %      100.0 %    December
KT Strategic Investment Fund No.4   Investment fund   Korea     100.0 %      100.0 %    December
KT Strategic Investment Fund No.5   Investment fund   Korea     100.0 %      100.0 %    December
BC-VP Strategic Investment Fund No.1   Investment fund   Korea     100.0 %      100.0 %    December
BC Card Co., Ltd.   Credit card business   Korea     69.5 %      69.5 %    December
 
 
 
 
 
 
 
Controlling percentage
ownership
 1
(%)
 
 
 
Subsidiary
 
Type of business
 
Location
 
December 31,
2021
 
 
December 31,
2022
 
 
Closing
month
VP Inc.
4
   Payment security service for credit card, others   Korea     50.9 %      69.7 %    December
H&C Network   Call center for financial sectors   Korea     100.0 %      100.0 %    December
BC Card China Co., Ltd.   Software development and data processing   China     100.0 %      100.0 %    December
INITECH Co., Ltd.
4
   Internet banking ASP and security solutions   Korea     58.2 %      61.3 %    December
Smartro Co., Ltd.   VAN (Value Added Network) business   Korea     64.5 %      64.5 %    December
KTDS Co., Ltd.
4
   System integration and maintenance   Korea     95.5 %      95.6 %    December
KT M&S Co., Ltd.   PCS distribution   Korea     100.0 %      100.0 %    December
GENIE Music Corporation
3,4
   Online music production and distribution   Korea     36.2 %      36.0 %    December
KT MOS Bukbu Co., Ltd.
4
   Telecommunication facility maintenance   Korea     100.0 %      100.0 %    December
KT MOS Nambu Co., Ltd.
4
   Telecommunication facility maintenance   Korea     98.4 %      98.4 %    December
KT Skylife
4
   Satellite TV   Korea     50.3 %      50.2 %    December
Skylife TV Co., Ltd.   TV contents provider   Korea     100.0 %      100.0 %    December
KT Estate Inc.   Residential building development and supply   Korea     100.0 %      100.0 %    December
KT Investment Management
Inc
.
(KT AMC Co., Ltd.)
   Asset management, real estate and consulting services   Korea     100.0 %      100.0 %    December
NEXR Co., Ltd.   Cloud system implementation   Korea     100.0 %      100.0 %    December
KTGDH Co., Ltd.   Data center development and related service   Korea     100.0 %      100.0 %    December
KT Sat Co., Ltd.   Satellite communication business   Korea     100.0 %      100.0 %    December
Nasmedia, Co., Ltd.
3,4
   Solution provider and IPTV advertisement sales business   Korea     44.0 %      44.0 %    December
KT Sports Co., Ltd.   Management of sports teams   Korea     100.0 %      100.0 %    December
KT Music Contents Fund No.2   Music and contents investment business   Korea     100.0 %      100.0 %    December
KT-Michigan Global Content Fund   Content investment business   Korea     88.6 %      88.6 %    December
KTCS Corporation
2,4
   Database and online information provider   Korea     32.2 %      34.1 %    December
KTIS Corporation
2,4
   Database and online information provider   Korea     31.4 %      33.3 %    December
KT M Mobile Co., Ltd.   Special category telecommunications operator and sales of communication device   Korea     100.0 %      100.0 %    December
KT Investment Co., Ltd.   Financing business for new technology   Korea     100.0 %      100.0 %    December
PlayD Co., Ltd.   Advertising agency   Korea     70.4 %      70.4 %    December
Next Connect PFV   Residential building development and supply   Korea     100.0 %      100.0 %    December
KT Rwanda Networks Ltd.   Network installation and management   Rwanda     51.0 %      51.0 %    December
AOS Ltd.   System integration and maintenance   Rwanda     51.0 %      51.0 %    December
KT Japan Co., Ltd.   Foreign investment business and local counter work   Japan     100.0 %      100.0 %    December
East Telecom LLC   Wireless/fixed line internet business   Uzbekistan     91.6 %      91.6 %    December
 
           
Controlling percentage
ownership
 1
(%)
      
Subsidiary
  
Type of business
  
Location
  
December 31,
2021
    
December 31,
2022
    
Closing
month
KT America, Inc.   Foreign investment business and local counter work   USA     100.0 %      100.0 %    December
PT. BC Card Asia Pacific   Software development and supply   Indonesia     99.9 %      99.9 %    December
KT Hongkong Telecommunications Co., Ltd.    Fixed line telecommunication business   Hong Kong     100.0 %      100.0 %    December
Korea Telecom Singapore Pte. Ltd.   Foreign investment business and local counter work   Singapore     100.0 %      100.0 %    December
Texnoprosistem LLC   Fixed line internet business   Uzbekistan     100.0 %      100.0 %    December
Nasmedia Thailand Co., Ltd.   Internet advertising solution   Thailand     99.9 %      99.9 %    December
KT Huimangjieum   Manufacturing   Korea     100.0 %      100.0 %    December
K-REALTY RENTAL HOUSING REIT 3   Residential building   Korea     88.6 %      88.6 %    December
Storywiz Co., Ltd.   Contents and software development and supply   Korea     100.0 %      100.0 %    December
KT Engineering Co., Ltd.   Telecommunication facility construction and maintenance   Korea     100.0 %      100.0 %    December
KT Studio Genie Co., Ltd.   Data communication service and data communication construction business   Korea     100.0 %      90.9 %    December
KHS Corporation   Operation and maintenance of facilities   Korea     100.0 %      100.0 %    December
Lolab Co., Ltd.   Truck transportation and trucking arrangement business   Korea     80.0 %      79.8 %    December
HCN Co., Ltd.   Cable television service   Korea     100.0 %      100.0 %    December
Millie Seojae
3
   Book contents service   Korea     38.6 %      38.6 %    December
KT ES Pte. Ltd.   Foreign investment business   Singapore     57.6 %      57.6 %    December
Epsilon Global Communications
PTE. Ltd.
   Network service industry   Singapore     100.0 %      100.0 %    December
Epsilon Telecommunications
(SP) PTE. Ltd.
   Fixed line telecommunication business   Singapore     100.0 %      100.0 %    December
Epsilon Telecommunications
(US) PTE. Ltd.
   Fixed line telecommunication business   Singapore     100.0 %      100.0 %    December
Epsilon Telecommunications Limited   Fixed line telecommunication business   UK     100.0 %      100.0 %    December
Epsilon Telecommunications
(HK) Limited
   Fixed line telecommunication business   Hong Kong     100.0 %      100.0 %    December
Epsilon US Inc.   Fixed line telecommunication business   USA     100.0 %      100.0 %    December
Epsilon Telecommunications
(BG) EOOD
   Employee support service   Bulgaria     100.0 %      100.0 %    December
Epsilon M E A General Trading LLC
3
 
Local counter work
 
United Arab Emirates
 
 
49.0
% 
 
 
49.0
% 
 
December
Nasmedia-KT Alpha Future Growth
Strategic Investment Fund
 
Investment fund
 
Korea
 
 
100.0
 % 
 
 
100.0
% 
 
December
KT Strategic Investment Fund 6
 
Investment fund
 
Korea
 
 
100.0
 % 
 
 
100.0
% 
 
December
Altimedia Corporation
 
Software development and delivery
 
Korea
 
 
100.0
 % 
 
 
100.0
% 
 
December
Alticast B.V.
 
Software development and delivery
 
Netherlands
 
 
100.0
 % 
 
 
100.0
% 
 
December
Alticast Company Limited
 
Software development and delivery
 
Vietnam
 
 
100.0
 % 
 
 
100.0
% 
 
December
BCCARD VIETNAM LTD.
 
Software sales business
 
Vietnam
 
 
100.0
 % 
 
 
100.0
% 
 
December
KTP SERVICES INC.
 
Fixed line telecommunication business
 
Philippines
 
 
100.0
 % 
 
 
100.0
% 
 
December
KT RUS LLC
 
Foreign investment business
 
Russia
 
 
—  
 
 
 
100.0
% 
 
December
Hangang Real Estate Investment Trust No. 24
 
Investment fund
 
Korea
 
 
—  
 
 
 
75.0
% 
 
December


 
 
 
 
 
 
Controlling percentage
ownership
 1
(%)
 
 
 
Subsidiary
 
Type of business
 
Location
 
December 31,
2021
 
 
December 31,
2022
 
 
Closing
month
KT DX Vietnam Company Limited
 
Software development
 
Vietnam
 
 
—  
 
 
 
100.0
% 
 
December
kt cloud Co., Ltd.
 
Information telecommunication business
 
Korea
 
 
—  
 
 
 
100.0
% 
 
December
Pocheon Jeonggyori Development Co., Ltd.
 
Residential building development
 
Korea
 
 
—  
 
 
 
80.9
% 
 
December
Alpha DX Solution Co., Ltd.
 
Data communication service
 
Korea
 
 
—  
 
 
 
100.0
% 
 
December
PT CRANIUM ROYAL ADITAMA
 
Software development
 
Indonesia
 
 
—  
 
 
 
67.0
% 
 
December
KT Primorye IDC LLC
 
Data processing and associated service delivery
 
       Russia      
 
 
—  
 
 
 
99.0
% 
 
December
Juice Inc.
3
 
Online information provider/Software development and delivery
 
Korea
 
 
—  
 
 
 
41.2
% 
 
December
SPARK AND ASSOCIATES INC.
 
Network service industry
 
Korea
 
 
—  
 
 
 
100.0
% 
 
December
 
1
Sum of the ownership interests owned by the Controlling Company and subsidiaries.
2
Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company can exercise the majority voting rights in its decision-making process at all times considering the historical voting pattern at the shareholders’ meetings.
3
Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company holds the majority of voting right based on an agreement with other investors.
4
The number of subsidiaries’ treasury stock is deducted from the total number of shares when calculating the controlling percentage ownership.
 
 
1.3
Changes in Scope of Consolidation
Subsidiaries
newly
included and excluded in the consolidation during the year ended December 31, 2022:
 
Changes
   
Location
   
Name of Subsidiary
   
Reason
Included
    Russia    KT RUS LLC    Newly established
Included
    Korea    Hangang Real Estate Investment Trust No. 24    Newly established
Included
    Vietnam    KT DX Vietnam Company Limited    Newly established
Included
    Korea    kt cloud Co., Ltd.    Newly established
Included
    Korea    Pocheon Jeonggyori Development Co., Ltd.    Newly established
Included
    Korea    Alpha DX Solution Co., Ltd.    Split-off
Included
    Indonesia    PT CRANIUM ROYAL ADITAMA    Transferred
Included
    Russia    KT Primorye IDC LLC    Newly established
Included
    Korea    SPARK AND ASSOCIATES INC.    Transferred
Included
    Korea    Juice Inc.    Transferred
Excluded
    Korea    MEDIA GENIE Co., Ltd.    Merged
Excluded
    Korea    kt seezn Co., Ltd.    Merged
Excluded
    UK    7D Digital Limited    Liquidated
Excluded
    Korea    Whowho&Company Co., Ltd.    Merged
 
Summarized information for consolidated subsidiaries as at and for the years ended December 31, 2020, 2021 and 2022 is as follows:
 
(
in
 
millions of Korean won)
   
December 31, 2020
  
    
Total assets
     
Total
liabilities
     
Operating
revenues
    
Profit (loss)
for the year
  
KT Powertel Co., Ltd.
   
￦
 119,694     
￦
 18,833     
￦
 65,897    
￦
 3,809  
KT Linkus Co., Ltd.
      58,372        54,022        84,519       (3,212 ) 
KT Submarine Co., Ltd.
      116,813        14,032        110,201       1,197  
KT Telecop Co., Ltd.
      318,456        193,737        392,489       212  
KT Alpha Co., Ltd.
(KT Hitel Co., Ltd.)
      288,949        92,599        350,231       2,080  
KT Service Bukbu Inc.
      60,825        56,554        217,451       (871 ) 
KT Service Nambu Inc.
      58,182        51,460        264,776       (456 ) 
BC Card Co., Ltd.
1
      3,084,398        1,778,751        3,387,640       39,455  
H&C Network
1
      269,651        61,365        322,690       2,413  
Nasmedia Co., Ltd.
1
      422,039        221,371        113,136         23,134  
KTDS Co., Ltd.
1
      183,297        133,129        499,990       10,635  
KT M Hows Co., Ltd.
      104,704        76,315        44,860       6,935  
KT M&S Co., Ltd.
      231,260        197,306        661,533       (485 ) 
GENIE Music Corporation
      250,538        88,488        247,237       9,472  
KT MOS Bukbu Co., Ltd.
      32,167        26,070        67,975       1,473  
KT MOS Nambu Co., Ltd.
      33,765        24,947        71,259       1,639  
KT Skylife Co., Ltd.
1
      919,476        175,039        706,631       58,190  
KT Estate Inc.
1
      1,689,601        325,429        365,335       14,370  
KTGDH Co., Ltd.
(KTSB Data Service)
      11,003        1,669        4,282       538  
KT Sat Inc.
      630,740        92,791        173,693       14,753  
KT Sports Inc.
      26,572        14,940        46,608       (2,516 ) 
KT Music Contents Fund No.1
      4,844        1,525        243       84  
KT Music Contents Fund No.2
      15,021        285        169       (116 ) 
KT-Michigan Global Contents Fund
      10,382        175        111       (1,420 ) 
Autopion Co., Ltd.
      4,903        4,961        6,174       (2,459 ) 
KT M Mobile Inc.
      129,011        27,281        163,472       (3,617 ) 
KT Investment Co., Ltd.
1
      115,627        93,695        47,801       4,680  
KTCS Corporation
1
      384,919        215,175        933,006       11,323  
KTIS Corporation
      294,289        126,894        454,172       7,387  
Next Connect PFV Inc.
      394,268        37,271        26       (7,101 ) 
KT Japan Co., Ltd.
1
      2,694        2,622        1,853       1  
Korea Telecom China Co., Ltd.
      381        21        618       (492 ) 
KT Dutch B.V.
1
      29,585        10,109        26,782       6,061  
KT AMERICA, INC
      4,498        125        6,808       712  
KT Rwanda Networks Ltd.
2
      114,768        191,781        17,870       (34,610 ) 
KT Belgium
      87,608        —          (81 )      (81 ) 
KBTO sp.z o.o.
      438        117        490       (2,823 ) 
AOS Ltd.
2
      11,812        3,875        5,719       296  
KT Hong Kong Telecommunications Co., Ltd.
      6,159        2,800        16,386       1,308  
KT Hopemate
      3,720        2,787        5,239       (13 ) 
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co.
      5,703        1,165        333       83  
Storywiz Co., Ltd
      21,594        10,065        19,209       (1,954 ) 
KT Engineering Co., Ltd.
(KT ENGCORE Co., Ltd.)
      138,220        102,963        346,040       (8,461 ) 
 
1
These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.
2
At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.
 
(In millions of Korean won)
   
December 31, 2021
  
    
Total assets
    
Total
liabilities
    
Operating
revenues
 3
    
Profit (loss)
for the year
 3
  
KT Linkus Co., Ltd
   
￦
 54,219    
￦
 53,316    
￦
 81,434    
￦
 (3,095 ) 
KT Submarine Co., Ltd.
      110,390       10,736       31,374       (3,183 ) 
KT Telecop Co., Ltd.
      363,224       233,797       515,456       3,985  
KT Alpha Co., Ltd.
(KT Hitel Co., Ltd.)
      390,671       172,767       471,870       (8,692 ) 
KT Service Bukbu Inc.
      59,341       54,070       231,602       1,128  
KT Service Nambu Inc.
      62,513       52,695       271,174       1,430  
BC Card Co., Ltd.
1
      3,933,427       2,481,004        3,580,970        120,308  
H&C Network Co., Ltd.
1
      88,616       4,993       227,604       11,995  
Nasmedia Co., Ltd.
1
      490,394       268,618       125,876       27,120  
KTDS Co., Ltd.
1
      341,358       199,831       632,899       21,464  
KT M&S Co., Ltd.
      241,377       203,051       710,634       3,496  
KT MOS Bukbu Co., Ltd.
      32,511       25,402       70,212       1,637  
KT MOS Nambu Co., Ltd.
      36,741       26,053       71,940       2,016  
KT Skylife Co., Ltd.
1
      1,275,645       469,694       772,950       62,309  
KT Estate Inc.
1
      2,370,940        791,884       577,578       213,203  
KTGDH Co., Ltd.
      11,464       1,560       4,423       553  
KT Sat Inc.
      593,616       34,169       174,750       20,830  
KT Sports Inc.
      29,524       19,740       67,612       (2,039 ) 
KT Music Contents Fund No.2
      14,985       278       253        (30 ) 
KT-Michigan Global Contents Fund
      3,552       112       13,592       10,032  
KT M Mobile Inc.
      144,175       40,749       204,641       5,918  
KT Investment Co., Ltd.
1
      87,366       66,108       21,040       (697 ) 
KTCS Corporation
1
      416,750       234,172       968,499       19,034  
KTIS Corporation
      369,361       177,619       487,801       24,944  
Next Connect PFV Inc.
      518,441       167,963       —         (6,519 ) 
KT Japan Co., Ltd.
1
     1,474       2,633       1,298       (142 ) 
KT America, Inc.
      4,884       101       6,508       201  
KT Rwanda Networks Ltd.
2
      125,860       236,389       23,328       (28,770 ) 
AOS Ltd.
2
      11,539       2,812       6,942       823  
KT Hong Kong Telecommunications Co., Ltd.
      6,613       1,346       18,825       1,313  
KT Hopemate
1
      6,311       2,978       12,538       116  
KT Engineering Co., Ltd.
(KT ENGCORE Co., Ltd.)
      185,850       144,832       284,998       366  
KT Studio Genie Co., Ltd.
1,
      648,534       276,933       90,047       (16,443 ) 
Lolab Co., Ltd.
      26,726       897       2,107       (134 ) 
East Telecom LLC
1
      35,904       22,088       11,960       2,487  
KT ES Pte. Ltd.
1
      240,331       80,597       15,157       (6,355 ) 
KT Philippines
      3,641       1,243       —         —    
Altimedia Corporation
1
      32,338       9,742       6,968       1,037  
 
(
i
n millions of Korean won)
   
December 31, 2022
  
    
Total assets
    
Total
liabilities
    
Operating
revenues
 3
    
Profit (loss)
for the year
 3
  
KT Linkus Co., Ltd.
   
￦
 47,734    
￦
 47,498    
￦
 76,135    
￦
 (614 ) 
KT Submarine Co., Ltd.
      120,255       7,884       42,848       (12,126 ) 
KT Telecop Co., Ltd.
      370,004       230,965       517,406       4,267  
KT Alpha Co., Ltd.
1
(KT Hitel Co., Ltd.)
      406,236       172,211       516,737       13,115  
KT Service Bukbu Co., Ltd.
      74,673       65,820       252,304       3,227  
KT Service Nambu Co., Ltd.
      80,450       66,479       301,720       3,067  
BC Card Co., Ltd.
1
      5,666,075        4,109,200        3,897,090        148,341  
H&C Network
      82,737       6,640       27,392       992  
Nasmedia Co., Ltd.
1
      516,945       275,730       153,211       27,691  
KTDS Co., Ltd.
1
      401,932       228,474       723,161       30,941  
KT M&S Co., Ltd.
      255,310       204,336       730,802       8,105  
KT MOS Bukbu Co., Ltd.
      38,684       22,553       83,085       4,607  
KT MOS Nambu Co., Ltd.
      42,011       25,416       83,330       5,035  
KT Skylife Co., Ltd.
1
      1,359,166       503,679       1,038,468       20,941  
KT Estate Inc.
1
      2,480,333       833,842       478,188       58,780  
KT GDH Co., Ltd.
      12,059       1,596       4,323       451  
KT Sat Co., Ltd.
      677,980       89,644       185,313       28,073  
KT Sports Co., Ltd.
      28,220       15,461       65,350       (7,302 ) 
KT Music Contents Fund No.2
      15,718       277       1,040       735  
KT-Michigan Global Content Fund
      2,371       27       33        (1,095 ) 
KT M Mobile Co., Ltd.
      152,114       49,816       262,918       4,731  
KT Investment Co., Ltd.
1
      103,354       79,182       15,136       2,840  
KTCS Corporation
1
      419,726       228,618       1,031,010       17,634  
KTIS Corporation
      396,208       199,204       536,229       15,917  
Next Connect PFV
      624,734       277,967       3       (3,712 ) 
KT Japan Co., Ltd.
1
     1,888       3,141       3,263       226  
KT America, Inc.
      5,945       843       8,070       37  
KT Rwanda Networks Ltd.
2
      126,721       267,369       30,834       (27,467 ) 
AOS Ltd.
2
      10,972       905       8,049       1,274  
KT Hong Kong Telecommunications Co., Ltd.
      10,505       4,768       20,413       51  
KT Huimangjieum
1
      6,984       2,582       22,860       494  
KT Engineering Co., Ltd.
(KT ENGCORE Co., Ltd.)
      141,463       89,853       258,435       10,302  
KT Studio Genie Co., Ltd.
1
      987,270       268,911       723,580       189,498  
Lolab Co., Ltd.
      35,091       17,247       74,881       (7,985 ) 
East Telecom LLC
1
      42,691       21,645       27,030       6,419  
KT ES Pte. Ltd.
1
      240,721       88,640       78,815       (23,957 ) 
KTP SERVICES INC.
      3,832       2,044       776       (255 ) 
Altimedia Corporation
1
      44,861       15,777       47,203       6,035  
KT RUS LLC
1
      967       16       5       (871 ) 
KT DX Vietnam Company Limited
      1,815       6       —         26  
kt cloud Co., Ltd.
1
      1,348,684       245,872       432,118       14,712  
 
1
These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.
2
At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.
3
Profit or loss is included from the date of acquisition of control to the end of the reporting period.