Montana Title 40. Family Law § 40-5-417. Modification or termination of withholding orders

(1) The department may at any time modify the order to withhold income to:

(2) If an arrearage occurs while the department is collecting an amount of money necessary to pay current installments of support as they become due and payable, the department may adjust the amount of income required to be withheld to also satisfy the arrearage, as provided in this part.

(3) An income-withholding order terminates only when the department is no longer authorized under the law to collect support or, when appropriate, services rendered under 40-5-203 have come to an end or when the obligation to pay support is terminated and all arrearages are paid in full, whichever occurs first.

(4) The payment in full of any arrearage amount may not be the sole basis for termination of withholding as long as there is a support obligation enforceable by the department.