February 14, 1966 | DATEV founded |

| - 65 tax consultants from Nuremberg's regional chamber establish a cooperative self-help organization.
- Chairman is founder Heinz Sebiger.
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January/February 1969 | Official opening of DATEV's own computer center |

| - DATEV computer center established.
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September 1974 | Introducing remote data transmission |

| - With remote data transmission the cooperative allows its members to transmit the data recorded at their terminals on magnetic tape to the DATEV computer center in Nuremberg via telephone lines.
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June 1976 | Setup and development of the electronic data transfer network |

| - DATEV sets up its own network for electronic data transmission between the tax consultants' offices and the computer center.
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September 1982 | Cooperation agreement with the Japanese partner firm TKC |

| - In a cooperation agreement the Japanese firm TKC (Tochigiken-Keisan-Center) and DATEV document the alliance of the two companies which began in 1972.
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1990 | Establishing DATEV in the new federal states |

| - Opening its first Information Center in the new federal states.
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June/July 1996 | Transition in the office of chairman of the board |

| - The founder and chairman of the executive board, Dr. Heinz Sebiger, retires at the age of 73 years.
- His successor as of July, 1996 is Prof. Dieter Kempf.
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1999 | Conversion to Windows product line |

| - Gradual conversion from the DOS system to the 32 bit operating system Windows from 1997 to 1999.
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September 2000 | First opening of the European market |

| - Founding the cooperative KDP-DATEV, družstvo by the Czech chamber of tax consultants and DATEV.
- Joining together with other partners in Brno in December to form the marketing company DATEV.cz s.r.o.
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2001 | Market expansion to Austria and Italy |

| - Foundation of the marketing company in Austria (DATEV.at GmbH).
- Founding the market opening company D&K s.r.l. in Italy.
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January 2002 | Euro conversion |

| - Internal conversion.
Calculations of payments as well as outstanding debts and the quotation of amounts are made in the euro currency only.
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2003 | Further development of the European market |

| - Founding DATEV Symfonia Sp. z o.o. in Poland.
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2005 | Extending its involvement in Italy |

| - In July DATEV extends its involvement in Italy by founding the development company DATEV.it S.p.A.
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2007 | Joint venture with the spanish company SINFOPAC S.L. |
| - With this joint venture DATEV extends its European activities in 2007 to the Spanish market.
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2010 | Expansion of our committment in Poland - Foundation of DATEV.pl |
| - DATEV becomes sole proprietor of the Polish associated company, which is re-titled as DATEV.pl
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December 31, 2010 | Business development |
| turnover | members | employees |
December 31, 1967 | DM 1.2 million | 993 | 5 |
December 31, 1976 | DM 82 million | 11,839 | 739 |
December 31, 1989 | DM 400 million | 27,041 | 2,361 |
December 31, 1996 | DM 989 million | 35,530 | 4,723 |
December 31, 2009 | €672.4 million | 39,625 | 5,738 |
December 31, 2010 | €698.6 million (preliminary figure) | 39,756 | 5,844 |