The current discussions started last week when DFB president Gerhard Mayer-Vorfelder questioned the sanity of the amount of money being spent in German football.
Werder Bremen midfielder Marco Bode added to the controversy by comparing his salary and the importance of his job unfavourably to that of a nurse.
But writing in newspaper Bild am Sonntag, Kahn dismissed the notion of a salary cap.
"Demands for salary limits are simply not in keeping with the times," he said.
"We should only consider this if we really want to take a step backwards to communist times and ideologies.
"So much is demanded from players at the top clubs, who are under continual pressure to succeed and get results.
"I, for one, can say that I really deserve every penny I earn."
Kahn is one of the top earners in the Bundesliga, reportedly on a salary of around é¼4.75 million (£2.9 million) per year.