Registering an out-of-state LLC in Montana
An LLC formed in another state pays $70 to register in Montana, then files the same recurring reports as a Montana LLC.
Foreign LLC in Montana
Source-linkedState fees only · retrieved 2026-10-20
Certificate of Authority (Foreign LLC)source$70
Annual Reportsource$0
Year one$70
Every year after (average)$0
5-year total$70
When you need to register
If your LLC was formed in another state but "transacts business" in Montana — an office, employees, or regular in-state operations — Montana generally requires you to register before you do business here. You file Certificate of Authority (Foreign LLC) with the Montana Secretary of State, Business Services; see the official fee.
Your home state keeps charging its own fees too, so the true cost is both states added together.