MCS-150

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 as Form MCS-150B (for carriers that need an FMCSA Hazardous Materials Safety Permit) and Form MCS-150C (for intermodal equipment providers) (49 CFR §390.19T(a)). The power-unit figure on the MCS-150 is what UCR uses to set a carrier's fee bracket, so an inaccurate or stale MCS-150 directly causes wrong-bracket UCR filings.