K.S.A. 16a-2-104: (UCCC) Payment credit date.

(1) A creditor shall credit a payment to the consumer's account on the date of receipt, except when a delay in crediting does not result in a finance charge or other charge.

(2) Notwithstanding subsection (1), if a creditor specifies, in a writing delivered to the consumer, reasonable requirements for the consumer to follow in making payments, but accepts a payment that does not conform to those requirements, then the creditor shall credit the payment within five days after receipt.