Ohio Revised Code Title XIII. Commercial Transactions § 1321.15

(A) No licensee shall knowingly induce or permit any person, jointly or severally, to be obligated, directly or contingently or both, under more than one contract of loan at the same time for the purpose or with the result of obtaining a higher rate of interest or greater charges than would otherwise be permitted upon a single loan made under sections 1321.01 to 1321.19 of the Revised Code.

(B) No licensee shall charge, contract for, or receive, directly or indirectly, interest and charges greater than such licensee would be permitted to charge, contract for, or receive without a license under sections 1321.01 to 1321.19 of the Revised Code on any part of an indebtedness for one or more than one loan of money if the amount of such indebtedness is in excess of five thousand dollars.

(C) For the purpose of the limitations set forth in this section, the amount of any such indebtedness shall be determined by including the entire obligation of any person to the licensee for principal, direct or contingent or both, as borrower, indorser, guarantor, surety for, or otherwise, whether incurred or subsisting under one or more than one contract of loan, except that any contract of indorsement, guaranty, or suretyship that does not obligate the indorser, guarantor, or surety for any charges in excess of eight per cent per annum, is not included in such entire obligation. If a licensee acquires, directly or indirectly, by purchase or discount, bona fide obligations for goods or services owed by the person who received such goods or services to the person who provided such goods or services, then the amount of such purchased or discounted indebtedness to the licensee shall not be included in computing the aggregate indebtedness of such borrower to the licensee for the purpose of the prohibitions set forth in this section.