Montana New Filing Addendum is a document that must be submitted when filing a new business entity in Montana. It contains additional information that must be included in the filing, such as the entity type, registered agent information, and the name and address of the incorporated. There are three types of Montana New Filing Addendum: the Entity Type Addendum, the Registered Agent Addendum, and the Incorporated Addendum. The Entity Type Addendum requires information such as the type of entity being formed (i.e. corporation, LLC, etc.), the effective date, and the state of formation. The Registered Agent Addendum requires information about the registered agent including the name and address. The Incorporated Addendum requires the name and address of the incorporated.