The MCS-150 biennial update helps the Federal Motor Carrier Safety Administration maintain accurate information about commercial transportation businesses.
The form identifies a company’s legal name, addresses, operations, vehicles, drivers, and mileage. It is part of maintaining a USDOT registration, but it does not replace operating authority, insurance filings, or motor carrier safety obligations.
For 2026, carriers must also understand FMCSA’s temporary enforcement suspension and the transition to the Motus registration system.
What Is Form MCS-150?
Form MCS-150, the Motor Carrier Identification Report, is used to maintain information associated with a USDOT number.
The report helps FMCSA administer registrations and maintain information used in federal safety oversight.
The MCS-150 is not an annual operating license. It is also not a substitute for vehicle inspections, driver qualification requirements, or Unified Carrier Registration.
Who Must File a Biennial Update?
Entities subject to FMCSA’s USDOT biennial update requirement must maintain their registration information.
This includes covered motor carriers and other regulated registrants.
A company does not become exempt from the normal biennial requirement simply because it operates one truck or has not changed its information.
The underlying rule requires the biennial update even when company information remains unchanged.
What Information Is Reported?
An MCS-150 update generally includes:
- USDOT number and applicable registration identifiers
- Legal business name and DBA
- Physical and mailing addresses
- Telephone and other contact information
- Operating classification
- Cargo classifications
- Number of power units and drivers
- Vehicle mileage information
Companies should verify these details against current business records before submitting.
When Is the MCS-150 Due?
The normal filing schedule is based on the final two digits of the USDOT number.
The last digit determines the month.
| Last digit | Filing month |
| 1 | January |
| 2 | February |
| 3 | March |
| 4 | April |
| 5 | May |
| 6 | June |
| 7 | July |
| 8 | August |
| 9 | September |
| 0 | October |
The second-to-last digit determines the filing year.
An odd digit means odd-numbered years. An even digit means even-numbered years.
The normal deadline is the last day of the assigned month.
For example, a USDOT number ending in 46 normally has a June deadline in even-numbered years.
What If the Company Filed Recently?
FMCSA recognizes a qualifying MCS-150 or MCS-150C update completed within the 12 months immediately before the scheduled deadline as satisfying that biennial update.
A carrier should confirm the accepted filing date.
The filing does not permanently change the month or odd/even-year cycle assigned to the USDOT number.
When Must Company Changes Be Reported?
FMCSA generally requires reportable registration changes to be updated within 30 days.
Relevant changes may involve business addresses, telephone numbers, operating classifications, power units, drivers, or other reported information.
Legal-name changes, changes in ownership, or entity restructuring may require additional documentation or a separate transaction.
Do not assume every change can be completed using the same routine filing process.
What Changed in September 2026?
FMCSA temporarily suspended enforcement of biennial updates and related USDOT-number inactivation for filings due on or after June 1, 2026.
The agency announced this relief while addressing the transition to Motus.
Covered registrants receive additional time and will not have their USDOT numbers inactivated solely for failing to complete those biennial updates during the suspension.
The underlying requirement remains in place.
Does the Suspension Apply to Every Late Filing?
No.
The announced relief concerns updates due on or after June 1, 2026.
A company with an earlier missed deadline should review its actual registration status and applicable FMCSA instructions.
The suspension does not automatically reinstate a previously inactive USDOT number or resolve unrelated safety violations.
How Do You File an MCS-150 Update?
FMCSA launched Motus on May 19, 2026.
Visit the official registration system at MOTUS .
An authorized company official can create an individual profile, complete required identity verification, and claim the existing USDOT record.
After accessing the company account, review the business information and use the applicable update transaction.
FMCSA also provides specific instructions for transactions requiring supporting documentation or another submission method.
Can a Third Party File for a Carrier?
Yes, when properly authorized.
Motus supports designated companies that assist registrants with applicable filings.
Carriers should not share individual The public’s one account for government. | Login.gov passwords.
The business remains responsible for the accuracy of information submitted on its behalf.
Is There a Government Filing Fee?
FMCSA does not charge a federal processing fee for a routine MCS-150 biennial update.
Private service providers may charge for optional administrative assistance.
Those charges should be distinguished from official government fees.
What Happens If the Update Is Missed?
Under the normal enforcement framework, a missed required update can result in USDOT-number inactivation and possible civil penalties.
However, FMCSA’s current temporary suspension changes the enforcement consequences for updates due on or after June 1, 2026.
A missed deadline does not necessarily mean the company’s USDOT number is inactive.
Verify the actual status through official FMCSA records.
Can an MCS-150 Reactivate an Inactive USDOT Number?
Some reactivation transactions involve updating registration information.
However, the appropriate procedure depends on why the number became inactive.
A USDOT-number inactivation, driver out-of-service order, and operating authority revocation are not interchangeable.
An ordinary biennial filing does not automatically resolve all three.
Does an MCS-150 Update Correct Safety Violations?
No.
Accurate power-unit and mileage information can affect certain FMCSA safety calculations.
However, a registration update does not erase valid roadside inspections, crash records, or enforcement findings.
Those matters must be addressed through the appropriate safety or review process.
Does Filing MCS-150 Renew UCR?
No.
Unified Carrier Registration is a separate annual requirement for covered interstate transportation entities.
The 2027 UCR registration season opened October 1, 2026.
A completed MCS-150 does not pay the annual UCR fee.
Frequently Asked Questions
Is the MCS-150 required every two years?
Yes, under the normal rule for covered USDOT registrants.
Must I update the form if nothing changed?
Yes, under the underlying biennial requirement, subject to current enforcement relief.
Is an MCS-150 filing free?
FMCSA charges no government processing fee for a routine biennial update.
Can I submit the filing through Motus?
Yes. Motus supports applicable biennial update transactions.
Will my USDOT number automatically be deactivated if I miss the deadline?
Not necessarily. FMCSA temporarily suspended related inactivation for covered deadlines beginning June 1, 2026.
Does filing the MCS-150 renew operating authority?
No. Operating authority is a separate regulatory matter.
Maintain Accurate FMCSA Registration Information
Keeping USDOT information current supports registration accuracy and broader compliance management.
MCS-150 Biennial Update Filing Services – Fmcsa.com provides private education and assistance with federal motor carrier requirements, including MCS-150 updates and related registration questions.
Visit MCS-150 Biennial Update Filing Services – Fmcsa.com or call (800) 454-2522 for assistance understanding your MCS-150 filing responsibilities.
MCS-150 Biennial Update Filing Services – Fmcsa.com is a private compliance resource and is not the Federal Motor Carrier Safety Administration or an official government website. Private assistance is optional.
