(a) Subject to rules adopted by the finance commission, a savings bank may lend or invest not more than 40 percent of the savings bank's total assets in commercial loans.
(b) In this section, "commercial loan" means a loan that:
(1) is for business, commercial, corporate, or agricultural purposes;
(2) is not a real property loan; and
(3) is not a qualified thrift asset under Section 92.204.