Compliance FAQ
What happens if I miss my MCS-150 deadline?
A missed biennial update can lead to civil penalties and deactivation of your USDOT number (49 CFR 390.19T(b)(4)). A USDOT number deactivated for a missed update is reactivated by filing the MCS-150 update (and an updated MCS-150B if you carry hazmat). Note: FMCSA has temporarily suspended enforcement of biennial updates and USDOT inactivation for updates due on or after June 1, 2026. The update is still required.
Reviewed by Korey Sharp-Paar · Updated
Why does it matter?
A deactivated USDOT number shows up when a broker or shipper looks up your company, and most won't tender loads until it's active again.
The fix is the same update you missed: file the MCS-150 with current fleet, driver and mileage data, and keep the next due date on your calendar.