Biennial Update (MCS-150)
Your MCS-150 keeps your carrier information current with FMCSA — things like fleet size, driver count and operation type. It generally needs to be updated on a recurring schedule tied to your USDOT number, even if nothing about your business has changed.
Start with your USDOT number
We'll confirm where you stand before anything else happens.
- We pull up your carrier record
- We show you what needs attention, in plain English
- Nothing gets filed or charged until you approve it
Don't have it handy? Talk to a specialist instead →
You don't have to use us. You can complete this yourself directly with FMCSA. Our fee is for preparing and filing it on your behalf.
Who typically needs this
- Any carrier with an active USDOT number
- Carriers whose fleet size, operation type or address has changed
- Carriers who aren't sure when their update is due
What DOT Compliance Partner handles
- Looking up when your update is due
- Preparing the update with your current operation details
- Filing it and confirming it went through
- Reminding you before your next one is due
What we'll need from you
- USDOT number
- Current fleet and driver counts
- Any changes to address or operation type
How it works
- 01
We check your due date
Enter your USDOT number and we'll confirm where your account stands.
- 02
Confirm your current details
You tell us what's changed, if anything, since your last update.
- 03
We file it
We submit the update and confirm it's been processed.
Deadlines & renewal
Generally due on a recurring schedule tied to your USDOT number, whether or not anything has changed. Missing it can affect your registration status.
Common mistakes
- Assuming no update is needed because nothing about the business changed
- Missing the window and having the registration flagged inactive
- Reporting fleet or driver counts that don't match reality
Frequently asked questions
How often do I need to file an MCS-150?+
It's generally on a recurring schedule tied to your USDOT number. We'll confirm your specific due date once we look up your carrier record.
What happens if I miss my update?+
Your registration can be marked inactive, which can affect your ability to operate. We'd rather catch it before that happens — that's the point of the reminder service.
Related services
Ready to get started?
Enter your USDOT number or talk to our compliance team.
DOT Compliance Partner is a private third-party service provider and is not affiliated with the U.S. Department of Transportation, FMCSA, the UCR Plan, or any other government agency.