Glossary · updated September 28, 2026
MCS-150
Also known as: Motor Carrier Identification Report
By Korey Sharp-Paar · Reviewed by the Fast Trucking Compliance team
Definition
MCS-150 is the FMCSA Motor Carrier Identification Report that every USDOT holder must update every 24 months under 49 CFR §390.19T. Free to file. Contents include carrier operation type, power-unit count, driver count, cargo classification, and annual mileage. Failing to file the biennial update can lead to civil penalties and deactivation of the USDOT number (49 CFR 390.19T(b)(4)). The due month follows the last digit of the USDOT number; the next-to-last digit sets odd or even years. The MCS-150 also exists in form MCS-150B (combined hazmat) and MCS-150C (intrastate hazmat) variants where applicable.
Authoritative source
Read more
MCS-150 Late Filing ConsequencesWhat happens when you miss the biennial update - civil penalties, USDOT deactivation and how to reactivate.
Related terms
- MCS-150B
- USDOT Number(DOT Number)