Online Services - Missouri Secretary of State
Corporations Online Portal
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Welcome to the Missouri Online Business Filing System

The Corporations Unit of the Secretary of State is responsible for the creation and maintenance filings for all domestic and out-of-state business entities doing business in Missouri.

These business entities include for-profit and nonprofit corporations, specialized business entities such as professional corporations, close corporations, agricultural cooperatives and mutual associations, and limited liability companies, limited partnerships and others. We strive to provide accurate and current information for all customers.

Normal office hours are Monday-Friday 8:00am-5:00PM excluding state and federal holidays.

All customers must have an account to file a corporate filing. Searching is free to the public. Please contact our office at or call toll free 1-866-223-6535 if you have any questions.

My Account
Enter user ID and password. Do not have an account? Click "Create Account" below to create one.
Business Search
Search for a business entity registered in Missouri.
Verify Certificates
Verify validity of a certificate issued by the MO SOS.