Surplus Lines

W hen Montana is the home state at the time of the surplus lines insurance transaction, surplus lines filings are made on approved forms provided by the Montana Commissioner of Securities and Insurance, Office of the State Auditor (CSI).

Rules regarding Surplus Lines are outlined in Montana Code Annotated. Montana imposes a 2.75% premium tax that is calculated on the total premium. A 2.5% fire tax pertains to the portion of the policy on which fire coverage premium is being charged.

On-Line Submissions

You can review your entries for the past year and enter your submissions, endorsements and cancellations. Note:  you are still responsible to keep copies for your internal recordkeeping. Surplus line taxes and fees are due annually on April 1. See our End of Year Filing Procedures for more information.


To submit suggested changes to the Surplus Line Approved Risk List or if you have any questions about Montana Surplus Lines, please call Pam Daugherty at (406) 444-9751 or email Pam at

You can enter transactions, review your account and access your annual statement online, posted March 1st each year. If you are a first time user, contact Pam Daugherty at (406) 444-9751 to get assistance signing on.

Filing Forms
Refund of Surplus Lines Taxes and Fees

All refunds issued by the Office of the Commissioner of Securities and Insurance, Montana State Auditor must have a completed form W-9 with a year-end surplus lines tax statement that supports the refund. The W-9 form must be completed annually by either an agency (which may be used for more than one agent) or for each individual agent.