The court fee for filing a private complaint in court is generally minimal, though it differs from state to state. For example, the court fee for filing a private complaint case in the Metropolitan Magistrate court in Delhi is only about ₹ 1.25 (one rupee and twenty-five paise).
If you are engaging an advocate for the purpose of filing (and arguing) your private criminal complaint, then of course, such advocate may charge his professional fee, which may differ from advocate to advocate.
But, if you are filing the private complaint yourself, in person, without engaging any advocate, then there would not be any other legal expenses for filing the private complaint in the court.
Dr. Ashok Dhamija is a New Delhi based Supreme Court Advocate and author of law books. Read more about him by clicking here. List of his Forum Replies. List of his other articles. List of his Quora Answers. List of his YouTube Videos.