N.J. Stat. Ann. § 17:18-16

The directors or trustees of any corporation organized or existing under any general or special law of this State for the purpose of transacting the business of insurance of any kind or class are authorized to pay, and to appropriate money to pay, such taxes, charges and fees as have been or may be imposed against the property, business, income or franchises of such corporation by the laws of this or any other State, or territory of the United States, or the District of Columbia, in which such corporation is doing business unless, prior to the payment of any such tax, charge or other fee, the law imposing the same shall have been expressly held invalid by the State court having final appellate jurisdiction in the premises or by the Supreme Court of the United States.