Okla. Stat. tit. 14A, § 14A-3-205: Loan finance charge on refinancing

With respect to a consumer loan, refinancing, or consolidation,

other than one made under Section 3-508B of this title, the lender

may by agreement with the debtor refinance the unpaid balance and

may contract for and receive a loan finance charge based on the

principal resulting from the refinancing at a rate not exceeding

that permitted by the provisions on loan finance charge for consumer

loans (Section 3-201) or the provisions on loan finance charge for

supervised loans (Section 3-508A), whichever is appropriate. For

the purpose of determining the loan finance charge permitted, other

than in relation to Section 3-508B, the principal resulting from the

refinancing comprises the following:

(1) if the transaction was not precomputed, the total of the

unpaid balance and the accrued charges on the date of the

refinancing, or, if the transaction was precomputed, the amount

which the debtor would have been required to pay upon prepayment

pursuant to the provisions on rebate upon prepayment (Section 3-210)

on the date of refinancing, except that for the purpose of computing

this amount no minimum charge (Section 3-210) shall be allowed; and

(2) appropriate additional charges (Section 3-202), payment of

which is deferred.