Louisiana Revised Statutes Tit. 9, § 3500. Rates of legal and conventional interest; usury

(3)(a) The owner or discounter of any note or bond or other written evidence of debt for the payment of money, payable to order or bearer or by assignment, shall have the right to claim and recover the full amount of such note, bond, or other written evidence of debt and all interest not beyond twelve percent per annum interest that may accrue thereon, notwithstanding that the rate of interest or discount at which the same may be or may have been discounted has been beyond the rate of twelve percent per annum interest or discount.

(b) This provision shall not apply to the banking institutions of this state in operation under existing laws or to a consumer credit transaction as defined by the Louisiana Consumer Credit Law.

(4)(a) The owner of any promissory note, bond, or other written evidence of debt for the payment of money to order or bearer or transferable by assignment shall have the right to collect the whole amount of such promissory note, bond, or other written evidence of debt for the payment of money, notwithstanding such promissory note, bond, or other written evidence of debt for the payment of money may include a greater rate of interest or discount than twelve percent per annum; such obligation shall not bear more than twelve percent per annum after maturity until paid.

(b) This provision shall not apply to a consumer credit transaction as defined by the Louisiana Consumer Credit Law.

(c) Where usury is a defense to a suit on a promissory note or other contract of similar character, it is permissible for the defendant to show the usury whether same was given by way of discount or otherwise, by any competent evidence.