Since 1976, Koehler has worked in the Federal Ministry of Economic Affairs, the Schleswig-Hollstein Governor's Office and the Federal Ministry of Finance. From 1990, he served as State Secretary of the Federal Ministry of Finance; From 1993, he is the chairman of the German Savings Bank Association. From 65438 to 0998, Koehler was the president of the European Bank for Reconstruction and Development, the eighth president and chairman of the executive board of the International Monetary Fund in March 2000, and the ninth president of postwar Germany in July 2004, with a five-year term.
Koehler attaches great importance to relations with China. Koehler visited China four times in 2000, 200 1 year, 2002 and 2003 during his tenure as managing director of the International Monetary Fund. In May 2007, he paid a state visit to China.
Wife: Eva Louise Koehler is a teacher. They have a son and a daughter.