12 Pa.C.S. § 6244
(a) General rule.—
(1) A holder of an installment sale contract may:
(b) Rates and computation.—
(1) For a motor vehicle under section 6243(d)(1) and (e), the refinance charge shall be determined by either of the following:
(i) Subject to subsection (c), the refinance charge on the amount of a refinanced full or partial installment payment for which each full or partial payment is extended or deferred may not exceed the equivalent of the following rates:
(ii) Subject to subsection (d), the refinance charge on the amount obtained shall be determined by:
(f) Permissible contents.— A holder under subsection (e) may include the following in the refinance contract:
(g) Loan.—