UEFA president Michel Platini has warned Italian clubs to break even, or face odd treatment.
Platini will introduce new rules from 2012 onwards in which clubs will have to operate within the financial fair play guidelines set out by the governing body.
And the former Juventus ace has reminded clubs to pull the handbrake in what he describes as "prudent management".
"This is the proof that makes it necessary to intervene rapidly," Platini told La Gazzetta dello Sport after they published a report which showed Serie A's wage bill could break the €1 billion barrier.
"Clubs must start to act with more discipline. You break even with more prudent management by reducing costs, developing new management strategies where possible, and increasing revenues. From 2012 clubs can only spend what they earn."
And Platini says UEFA will not be acting lightly with clubs facing punitive action if they don't adhere to the new laws.
"They will be subjected to the rigorous verifications of the Club Financial Control panel presided over by Jean Luc Dehaene and they will incur the risk of being sanctioned.
"The Bundesliga is the only league that regularly breaks even. This is the proof that a rigorous management of costs, and in particular of wages, will allow clubs to respect the new criteria of financial fair play.
"The clubs who spend too much today must intervene quickly and in a rigorous way if they don’t want to find themselves in difficulty when the new rules come into vigour."