Section 422.408 - Interlocking loans(1) The lender in an interlocking consumer loan is subject to the claims and defenses the consumer may have against the seller or lessor in the consumer transaction for which the proceeds of the loan are used, subject to sub. (3).(2) For purposes of this section, a consumer transaction pursuant to a seller credit card shall be deemed to be a consumer loan transaction if the transaction is other than a purchase or lease of goods or services from the issuer of the seller credit card, from a person related to such issuer or from others licensed or franchised to do business solely under the business or trade name or designation of such issuer.(3) For purposes of this section, a consumer loan transaction is an "interlocking consumer loan" if the creditor knows or has reason to know that all or a meaningful part of the proceeds of the loan are used to pay all or part of the customer's obligations to the seller or lessor under a consumer sale or lease, and if: (a) The lender is a person related to the seller or lessor;(b) The lender supplies to the seller or lessor, or the seller or lessor prepares, documents used to evidence the loan, other than sales slips or drafts used to evidence purchases pursuant to an open-end credit plan;(c) The lender directly or indirectly pays to the seller or lessor any commission, finder's fee or other similar consideration based upon or measured by the consumer loan;(d) The lender has recourse to the seller or lessor for nonpayment of the consumer loan transaction through a guaranty, maintenance of a reserve account or otherwise, but this paragraph shall not apply to transactions pursuant to a credit card issued by a lender not related to the seller or lessor;(e) The lender has knowledge, including knowledge from the lender's course of dealing with other customers of the seller or lessor or from the lender's records, or written notice of substantial complaints by such other customers, that such seller or lessor fails or refuses to perform the seller's or lessor's contracts with them and that such merchant fails to remedy such complaints within a reasonable time; or(f) The loan exceeds $100, is disbursed directly to the seller or lessor and is made pursuant to a credit card to finance a purchase from a seller's or lessor's place of business in this state, if the seller or lessor has a direct or indirect contractual relationship with the issuer permitting the seller or lessor to honor the credit card.(4) To the extent that a lender under an interlocking consumer loan is subject to claims or defenses of the customer against a merchant under this section, the lender's liability is limited to claims or defenses arising from the consumer transaction financed by the proceeds of the loan, and may not exceed that portion of the unpaid balance of the loan at the time the lender has notice of the claim or defense, which the proceeds used to pay all or part of the customer's obligation on which the claim is based bears to the entire amount financed of the loan, unless the customer has obtained a judgment against the merchant and execution thereon has been returned unsatisfied, in which event the lender shall in addition be liable in a similar manner for the proportionate amount paid by the customer to the lender with respect to the interlocking consumer loan before the lender received notice of the claim or defense of the customer.(5) With respect to a loan which constitutes an interlocking consumer loan solely by reason of sub. (3) (f), the lender shall be liable as provided in sub. (4) only if the lender receives notice of the customer's claim or defense within 12 months after the transaction is charged against the customer's account, and the unpaid balance of such a loan for purposes of sub. (4) shall be determined pursuant to the method set forth in s. 422.418.(6) This section shall not apply to consumer loans extended for the purpose of acquiring residential real property which are secured by a first lien mortgage or equivalent security interest on such property and on which the annual percentage rate disclosed pursuant to subch. III is less than 12 percent.1971 c. 239; 1991 a. 316. The lender liability limits under sub. (4) do not limit the liability of lenders subject to the Home Improvement Trade Practices Code promulgated under s. 100.20. Jackson v. DeWitt, 224 Wis. 2d 877, 592 N.W.2d 262 (Ct. App. 1999), 98-0493. Consumer defenses in interlocking loans and credit card transactions; recent statutes, policies and a proposal. Littlefield, 1973 WLR 471.