Mont. Code Ann. § 33-2-111
(1) An insurer may not be authorized to transact insurance in this state unless it makes and maintains in trust in this state through the commissioner for the protection of all its policyholders or of all its policyholders and creditors a deposit of cash or securities eligible for deposit under 33-2-603 in an amount not less than the minimum paid-in capital stock, if a stock insurer, or minimum surplus, if a mutual or reciprocal insurer, other than special surplus, required to be maintained for authority to transact the kinds of insurance to be transacted, except as to:
(c) alien insurers, in lieu of the deposit or part of the deposit in this state, the commissioner shall accept evidence satisfactory to the commissioner that the insurer maintains within the United States by way of trust deposits with public depositaries or in trust institutions approved by the commissioner assets available for discharge of its United States insurance obligations. The assets must be in an amount not less than the outstanding liabilities of the insurer arising out of its insurance transactions in the United States, together with the larger of the following sums:
History: En. Sec. 54, Ch. 286, L. 1959; R.C.M. 1947, 40-2809; amd. Sec. 1, Ch. 238, L. 1979; amd. Sec. 1070, Ch. 56, L. 2009.