| 1876年06月 |
Mitsui Bank is established as a private bank.(Capital stock: ¥ 2 million) |
| 1893年06月 |
Mitsui Bank reorganizes itself as an unlimited partnership. |
| 1895年11月 |
Sumitomo Bank is established as a private enterprise. |
| 1909年11月 |
Mitsui Bank reorganizes into a limited company.(Capital stock: ¥ 20 million) |
| 1912年03月 |
Sumitomo Bank reorganizes into a limited company.(Capital stock: ¥ 15 million) |
| 1936年12月 |
The seven major banks of Hyogo Prefecture are merged into Kobe Bank. |
| 1940年12月 |
Dai Nihon Mujin is established. |
| 1943年04月 |
Mitsui Bank merges with Dai-Ichi Bank to form Teikoku Bank. |
| 1944年08月 |
Teikoku Bank merges with Jugo Bank. |
| 1945年07月 |
Sumitomo Bank merges with Hannan and Ikeda Jitsugyo Banks. |
| 1948年04月 |
Dai Nihon Mujin is renamed Nihon Mujin. |
| 1948年10月 |
Teikoku Bank is re-established by Dai-Ichi Bank's separation. |
| 1949年05月 |
Teikoku Bank's shares become listed on the Tokyo and Osaka stock exchanges. |
| 1950年04月 |
Listed on Sapporo Securities Exchange in April 1950 and Nagoya Stock Exchange in March 1989 thereafter |
| 1951年10月 |
Nihon Mujin is renamed Nihon Sogo Bank. |
| 1952年12月 |
Osaka Bank's name is restored to Sumitomo Bank. |
| 1954年01月 |
Teikoku Bank's name is restored to Mitsui Bank. |
| 1960年04月 |
Kobe Bank's trust division is transferred to Toyo Trust and Banking. |
| 1965年04月 |
Sumitomo Bank merges with Kawachi Bank. |
| 1968年04月 |
Mitsui Bank merges with Toto Bank. |
| 1968年12月 |
Nihon Sogo Bank converts to an ordinary bank and is renamed Taiyo Bank. |
| 1973年10月 |
Kobe Bank and Taiyo Bank merge to form Taiyo Kobe Bank. |
| 1986年10月 |
Sumitomo Bank merges with Heiwa Sogo Bank. |
| 1989年01月 |
Sumitomo Bank's shares become listed on London Stock Exchange. |
| 1989年03月 |
Listed on Sapporo Securities Exchange in April 1950 and Nagoya Stock Exchange in March 1989 thereafter |
| 1990年04月 |
Mitsui Bank and Taiyo Kobe Bank merge to form Mitsui Taiyo Kobe Bank. |
| 1992年04月 |
Mitsui Taiyo Kobe Bank is renamed Sakura Bank. |
| 1996年06月 |
THE WAKASHIO BANK ,LTD.("Wakashio Bank") is established, and starts operation in September. |
| 2001年04月 |
Sakura Bank and Sumitomo Bank merge to form Sumitomo Mitsui Banking Corporation.(Capital stock: ¥ 1,276,7 billion) |
| 2002年12月 |
Sumitomo Mitsui Banking Corporation (SMBC) establishes a holding company named Sumitomo Mitsui Financial Group, Inc.(SMFG) through a share transfer, and SMBC then becomes a wholly-owned subsidiary of SMFG. |
| 2003年03月 |
SMBC merges with Wakashio Bank(merged bank's name: Sumitomo Mitsui Banking Corporation) |
| 2009年10月 |
Nikko Cordial Securities Inc.(current SMBC Nikko Securities Inc.) becomes a wholly-owned subsidiary of SMBC. |
