The punishment was issued following a board meeting of the Scottish game's governing body, and has seen the club drop to ninth spot in the First Division.
Dunfermline have also been placed under a transfer embargo which prevents them signing players aged over 21 until they are no longer in administration.
And they could face a further 10-point deduction and £150,000 fine at the start of next season if they fail to secure a Company Voluntary Arrangement.
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"We are fully aware of the impact this situation has had on all concerned, especially players, staff and fans of the club.
"The SFL has a duty to protect the integrity and on-going smooth-running of the league and therefore, following a thorough process, the SFL board has decided that Dunfermline Athletic Football Club Limited is guilty of conduct contrary to league rules, the interests of the league and its member clubs.
"In the face of current challenges, our ultimate aim is to ensure that clubs survive and communities continue to have a local team to support."
The club have the right to appeal the punishment.