Section 48-101-608 - Professional services limited by charter(a) A professional corporation may not render any professional service or engage in any business other than the professional service and business authorized by its charter.(b) Subsection (a) does not prohibit a professional corporation from investing its funds in real estate, mortgages, securities or any other type of investment.Acts 1992, ch. 698, § 1; T.C.A., § 48-3-608.