In the negotiations to form a coalition government following the 2009 federal elections, Fahrenschon was a member of the working group on taxes, national budget and financial policy, led by Thomas de Maizière and Hermann Otto Solms.
In October 2011, it became known that both Fahrenschon and Steffen Kampeter, Parliamentary State Secretary at the German Finance Ministry would be seeking the presidency of the DSGV after incumbent Heinrich Haasis stepped down [REF].