The opposition Tautua Samoa party is to go to court to seek the dissolution of the caretaker government.
Tautua Samoa cited the constitution's articles on collective responsibility and is claiming the caretaker government has breached its duty.
The court action will ask the head of state to appoint a new caretaker government.
The alleged misuse of power and public funds by the former finance minister is also cited in the court action.
The caretaker prime minister, Tuila'epa Sa'ilele Malielegaoi, dismissed the action as foolish and said the government will not be held hostage by a childish tactic.
He said the opposition's strategy shows their ignorance of the law.
The Tautua Samoa legal action will be called for mention in the Supreme Court next Monday.