He was elected on the CDU ticket and sits with the European People's Party group. In addition he is standing rapporteur on policy challenges and budgetary means of the enlarged Union 2007–2013. Böge served as vice-chairman of the Budget Committee and the Parliament’s lead negotiator on the EU’s financial framework for 2007-13.
Under his stewardship, the Parliament got an extra €4 billion and the chance to vote on the budget review. He later chaired the Budget Committee from 2007 to 2009, when he was succeeded by Alain Lamassoure. In 2010, he drafted the Parliament’s legislative bill on the extra financing needs of €1.4 billion for the International Thermonuclear Experimental Reactor (ITER).
In June 2013, Böge resigned as the EPP group’s budget negotiator in protest at an initial compromise deal between the European Parliament, the European Commission under the leadership of José Manuel Barroso and the European Council on a €960 billion budget for 2014-20. German Animal Breeders Federation (ADT), PresidentVereinigte Tierversicherung Gesellschaft a. Conseil Européen des Jeunes Agriculteurs, President (1977-80)German Federation of Rural Youth (BDL), Deputy Chairman (1973-77).
Böge is Vice-Chair of the Delegation for relations with Australia and New Zealand, member of the Committee on Budgets and the Special committee on the policy challenges and budgetary resources for a sustainable European Union after 2013 and substitute of the Committee on Foreign Affairs and the Delegation for relations with Japan. G., Member of the Supervisory Board.