Active Alerts: 1


MetroLink says it will resume 20-minute service between the Lambert Airport and North Hanley stations beginning Sunday, August 7.

Maintaining Your Certification

Online Portal

The department utilizes the Certification and Compliance Management System for our online certification process. This online certification system is developed and managed by B2G Now, Inc., which is currently used by a number of government agencies, airports, and other public entities. Use of the system allows for efficient and faster processing of applications and records management. 

We require businesses to use the Certification and Compliance Management System to complete all renewal applications for certifications.

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No-Change Affidavit

Step-by-Step Guides For Renewal

NAICS Code Expansion

Interstate Certification

Voluntary Withdrawal