Tex. Fin. Code § 353.301

A person may acquire a retail installment contract or an outstanding balance under a contract from another person on the terms, including the price, to which they agree. Notwithstanding any other law of this state, a person acquiring or assigning a retail installment contract, or any balance under a contract, does not have a duty to disclose to any other person the terms on which a contract or balance under a contract is acquired or assigned, including the consideration for the acquisition or assignment and any discount or difference between the rates, charges, or balance under the contract and the consideration rates, charges, or balance acquired or assigned, as applicable.