38 Ill. Adm. Code 160.70
Payments
Section 160
Section 160.70 Payments
a) All payments shall be credited on the account card as of the
date received.
b) A receipt shall be issued to the obligor for each payment
received.
c) When the finance charge is precomputed, the receipt for each
payment shall show the date of payment, the amount applied to the balance of
the contract and the amount applied to any other charges permissible under the
applicable State law. Payments shall be applied in the order in which they
become due.
d) The receipt for each payment on an interest-bearing account
shall show the date of payment, amount applied to interest, amount applied to
insurance, amount applied to principal, balance due on the account, amount
applied to any other charges permissible under the applicable State law and any
amount of interest earned by not collected.
e) No licensee may retain any portion of a payment processing
fee.