| 1893 | May |
Founded Taiyo Life as Nagoya Life Insurance Co., Ltd. 
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|---|---|---|
| 1902 | July |
Founded Daido Life Insurance Company through the merger of Asahi Life, Gokoku Life and Hokkai Life. 
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| 1947 | July |
Daido Life reestablished as a mutual company. |
| 1948 | February |
Taiyo Life reestablished as a mutual company. |
| 1999 | January |
Taiyo Life and Daido Life announced broad business alliance. 
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| June |
The group name, "T&D Life Group" was announced. ※ The group name changed from"T&D Life Group" to "T&D Insurance Group."（2019） |
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| October |
Launched T&D Taiyo Daido Asset Management Co., Ltd., |
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Launched T&D Confirm, Ltd., by integrating the operations of policy confirmation. |
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| 2001 | October |
Taiyo Life and Daido Life jointly completed the acquisition of former Tokyo Life Insurance Company, renamed T&D Financial Life Insurance Company. 
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Launched T&D Information Systems, Ltd., through a merger of the Group system divisions. |
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| 2002 | April |
Demutualized Daido Life to a joint stock company and listed its shares on the Tokyo Stock Exchange and the Osaka Securities Exchange. 
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| July |
Launched T&D Asset Management Co., Ltd., through a merger of T&D Taiyo Daido Asset Management Co., Ltd., and Daido Life Investment Trust Management Co., Ltd. |
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| August |
Launched T&D Taiyo Daido Lease Co., Ltd., through a merger of Group leasing business. |
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| 2003 | April |
Demutualized Taiyo Life to a joint stock company and listed its shares on the Tokyo Stock Exchange. 
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| 2004 | March |
Delisted Taiyo Life and Daido Life from the Tokyo Stock Exchange and the Osaka Securities Exchange. |
| April |
Established T&D Holdings, Inc., and listed on the Tokyo Stock Exchange and the Osaka Securities Exchange. (Taiyo Life, Daido Life and T&D Financial Life became wholly owned subsidiaries of T&D Holdings.) |
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Launched T&D Customer Services Co., Ltd., through a merger of group administrative services. |
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| 2006 | July |
Concentrated and relocated the headquarters of T&D Holdings, Taiyo Life, Daido Life, T&D Financial Life, and T&D Asset Management. |
| 2007 | January |
T&D Holdings made Japan Family Insurance Planning, Ltd. (renamed Pet & Family Small-amount Short-term Insurance Company) a subsidiary. |
| March |
T&D Holdings made T&D Asset Management Co., Ltd. a direct subsidiary. |
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| 2016 | January |
Head offices of three Group companies (T&D Holdings, Taiyo Life and Daido Life) relocated to Nihonbashi, Chuo-ku, Tokyo. 
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| 2019 | April |
Pet & Family Small-amount Short-term Insurance Company converted to nonlife insurance company. Renamed to Pet & Family Insurance Co., Ltd. |
| July |
T&D United Capital Co., Ltd. begins operations. |
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| 2022 | October |
All Right Co., Ltd. begins operations. |
| 2024 | September |
T&D Holdings made T&D INFORMATION SYSTEM Co., Ltd. a direct subsidiary. |