(a) A premium finance agreement may provide for the payment by the insured of a delinquency charge ranging in amount from $1.50 to a maximum of 5 percent of the delinquent payment on any payment which is in default for a period of five days or more. If the default results in the cancellation of any insurance contract listed in the agreement, the agreement may provide for the payment by the insured of a cancellation charge of $15.00 in the case of a commercial insurance premium finance agreement or $5.00 in the case of a consumer insurance premium finance agreement.
(b) A premium finance agreement may provide for a returned check fee of $20.00 for each installment payment check returned by the financial institution as the result of insufficient funds.