 Geir was born in the Icelandic capital Reykjavík, to Tomas Haarde, a Norwegian from Rogaland, and an Icelandic mother.He received his bachelor's degree in the United States at Brandeis University as a Wien Scholar, graduating with a degree in economics, then went on to earn two Master's degrees – in international relations from the School of Advanced International Studies of The Johns Hopkins University and in economics from the University of Minnesota.Prior to entering the Althing (the Icelandic Parliament), Geir was an economist at the Central Bank of Iceland from 1977 to 1983 and was a political adviser to the Icelandic Minister of Finance from 1983 to 1987.