> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.sosmt.gov/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I reinstate my Assumed Business Name (ABN)?

Expired Assumed Business Names (ABN) cannot be renewed; you must file a new application online through the Secretary of State portal at [https://biz.sosmt.gov/forms/business](https://biz.sosmt.gov/forms/business).