Section 25A-8 - "Finance charge" defined(a) "Finance charge" means the sum of all charges payable directly or indirectly by the buyer and imposed by the seller as an incident to the extension of credit, including any of the following types of charges which are applicable: (1) Interest, time price differential, service, carrying or other similar charge however denominated;(2) Premium or other charges for any guarantee or insurance protecting the seller against the buyer's default or other credit loss;(3) Loan fee, finder's fee or similar charge; and(4) Fee for an appraisal, investigation or credit report.(b) Finance charge does not include transfer of equity fees, substitution of collateral fees, default or deferment charges, or additional charges for insurance as permitted by G.S. 25A-17 or charges for insurance excluded by Section 226.4(a) of Regulation Z promulgated pursuant to section 105 of the Consumer Credit Protection Act.(c) With respect to a transaction in which the seller acquires a security interest in real property, finance charge does not include charges excluded by section 226.4(e) of Regulation Z promulgated pursuant to section 105 of the Consumer Credit Protection Act.