About this Document
These instructions will assist in preparing a complete and accurate MCS-150C form.
Please note: After December 12, 2015, MCS-150 forms can ONLY be used to update a USDOT number, not for initial registration with FMCSA. First-time applicants must use the Unified Registration System (URS). For more information about URS, or to apply for the first time, click here.