Montana Title 7. Local Government § 7-6-617. Payment of fees and taxes by credit card and other commercially acceptable means

(2)(a) If the payment is made by credit card, debit card, charge card, or similar method, the tax or fee liability is not discharged and the person has not paid the tax or fee until the local government entity receives payment or credit from the institution responsible for making the payment or credit. Upon receipt of the payment or credit, the amount is considered paid on the date on which the charge was made by the person paying the tax or fee.

(b) Upon notice of nonpayment, the local government entity may charge the person who attempted the payment of the tax or fee an amount not to exceed the costs of processing the claim for payment of the tax or fee. The amount that the local government entity charges must be added to the tax or fee due and collected in the same manner as the tax or fee due.

(3)(a) A person who makes payments to a local government entity as provided in this section may be required to pay a convenience fee of up to 3% of the amount of the payment.

(b) The local government entity shall deposit the convenience fees collected in the appropriate fund.

(4)(a) The local government entity may negotiate and enter into agreements with and pay required fees to financial institutions or credit card companies as necessary to facilitate implementation of this section.

(b) A financial institution or credit card company may not prohibit collection of the convenience fee provided for in subsection (3).

(c) Fees paid to a financial institution or credit card company must be paid from an appropriate fund of the local government entity.