The FMCSA mandates an MCS 150 update, also known as the Biennial Update, every two years at least for acquiring and keeping your USDOT number. You also need to file MCS-150 if you make any changes:

  • Biennial (every 2 years) Update
  • Changed your business address
  • Changed your company name
  • Changed your operating authority

  • Reapplication (after revocation of new entrant)

  • Reactivate USDOT
  • Become a hazardous materials carrier

  • Added to or reduced the number of vehicles or drivers in your fleet

  • Notify FMCSA that the company is no longer operating
  • Make any other changes to your business

Whenever you make changes to your trucking business and operations, you need to submit an MCS-150 update.