He was chairman of the Swedish-American Chamber of Commerce from 1993 to 1995. In 1947, he married Ulla Leuhusen (born 1926), the daughter to colonel, "friherre" Nils Leuhusen and Liv (née Eyde). They had three children; Anna (born 1948), Christina (born 1949), and Erik (born 1955). Wachtmeister died on 3 February 2012 and was buried on 5 May 2012 at Gryt Cemetery in Östra Göinge Municipality.