MCS-150 Form: FMCSA Biennial Update Requirements
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Last Updated: June 4, 2026
The MCS-150 Form, officially called the Motor Carrier Identification Report, is a filing required by the Federal Motor Carrier Safety Administration (FMCSA) for most businesses operating under a USDOT Number. The form is used to maintain accurate carrier information, including business details, fleet size, mileage, and operating classifications. Most carriers must submit a biennial MCS-150 update every two years, even when no company information has changed.
The FMCSA uses MCS-150 filings to maintain federal motor carrier records and monitor regulated carriers. Missing a required update can lead to USDOT Number deactivation and other compliance issues that may affect your ability to operate legally.
Key Takeaways
- The MCS-150 Form is the FMCSA’s Motor Carrier Identification Report used to maintain carrier registration records.
- Most carriers operating under a USDOT Number must file a biennial MCS-150 update every two years.
- Filing deadlines are based on the last two digits of your USDOT Number.
- Carriers must also update the form whenever certain business information changes.
- Failure to file can result in USDOT Number deactivation and other enforcement actions.
- The MCS-150 can be filed directly through the FMCSA or completed with assistance from a compliance service provider.
What Is the MCS-150 Form?
The MCS 150 form is a federal registration and reporting requirement used by the FMCSA. It allows the agency to track regulated entities involved in transportation and interstate operations.
The form collects company name, address, carrier’s DOT number, vehicle miles traveled, fleet size, and cargo classifications. It also covers passengers transported and quantities of hazardous materials hauled. This information supports overall safety performance monitoring and compliance oversight.
Motor carriers, freight forwarders, and intermodal equipment providers must file the form to remain compliant. The information collected helps the FMCSA maintain carrier records, monitor safety performance, and support various compliance and enforcement programs.
Carriers operating under FMCSA regulations must also ensure they meet applicable DOT insurance requirements when operating authority or insurance filings are required.
Who Must File the MCS-150 Form?
Any regulated entity operating commercial motor vehicles in interstate commerce must submit Form MCS-150. Businesses operating commercial motor vehicles must also comply with vehicle safety regulations, including carrying required documentation and DOT-required equipment when applicable. This includes for-hire carriers, private carriers, freight forwarders, owner-operators, and other carriers engaged in interstate operations.
Even if a trucking business has stopped operating, the FMCSA requires carriers to complete a biennial update unless the DOT number has been officially deactivated. Accurate filings are also critical during an operating authority reapplication or when registration and authority details change.
If you’re unsure whether your company is due for a biennial update, FCCR can help review your registration status and determine whether an MCS-150 filing is required.
When Do You Need to File an MCS-150 Biennial Update?
The MCS-150 biennial update must be filed every two years. According to 49 CFR § 390.19, carriers operating under a USDOT Number must maintain current registration information and complete required biennial updates. This requirement applies even if no business or operational details have changed.
Failure to complete a biennial update can result in penalties or loss of authority. The FMCSA enforces this requirement to maintain accurate federal records.
Your filing deadline is based on the last two digits of your DOT number. The next-to-last digit determines whether you file in an odd-numbered calendar year or an even-numbered calendar year. The last digit determines the filing month.
| USDOT Number Ending In: | Must File by Last Day of: |
|---|---|
| 1 | January |
| 2 | February |
| 3 | March |
| 4 | April |
| 5 | May |
| 6 | June |
| 7 | July |
| 8 | August |
| 9 | September |
| 0 | October |
Example:
If a carrier’s DOT number ends in 34, the second-to-last digit (3) means filing occurs in an odd-numbered year. The last digit (4) sets the filing deadline as April. Always determine your filing date using your DOT number to stay compliant.
How Do You File an MCS-150 Form?
Carriers can file an MCS-150 update through the FMCSA’s online registration system or by submitting a paper form to the agency. Most carriers choose online filing because updates are processed immediately.
To complete an MCS-150 filing, you will generally need:
- Your USDOT Number
- Legal business name
- Principal business address
- Contact information
- Vehicle and driver counts
- Vehicle miles traveled information
- Operating classifications and cargo types
Before submitting the form, review all information carefully to ensure it matches your current operation. Incorrect information can create compliance issues and may require additional corrections later.
What Happens If You Fail to File an MCS-150 Update?
Failing to submit your MCS 150 biennial update on time can lead to serious penalties. The FMCSA may deactivate your DOT number or suspend operating authority. Civil penalties of up to $10,000 may also apply.
Missed filings affect a carrier’s ability to transport freight, passengers, or hazardous materials. They can also impact safety performance records tied to roadside inspections and state-reported crashes. Inaccurate data may lower a safety score and delay reinstatement of authority or safety permit eligibility.
When Should You Update Your MCS-150 Information?
Carriers must submit an updated MCS-150 form whenever circumstances change. This includes changes to address, ownership, contact details, insurance coverage, fleet size, or type of operation.
Updates are also required if your business begins hauling quantities requiring hazardous materials registration. Keeping records current supports financial responsibility, compliance status, and long-term operational stability.
Many carriers discover outdated addresses, ownership records, or operational classifications only after a compliance review. Keeping your MCS-150 current can help avoid unnecessary complications and registration issues.
How Do You File an MCS-150 Form?
Online submissions are processed immediately. Mailed forms may take three to four weeks to process.
Paper filings must be received by the FMCSA on or before the filing deadline. Late submissions can result in enforcement action. Mail submissions are sent to 1200 New Jersey Avenue SE, Washington, D.C.
When filing online, the official FMCSA website displays a secure site icon and the official U.S. government icon. These indicators confirm submission through an authorized federal platform. While online filing is free, many carriers choose to obtain compliance services to avoid errors.
FAQ: MCS-150 Form and Biennial Updates
In addition to required biennial updates, carriers should update their MCS-150 whenever certain business information changes, such as ownership, address, fleet size, or operating classifications.
Carriers must complete a biennial update every 24 months based on their DOT number.
Your DOT number may be deactivated, and your authority to operate may be suspended.
Yes. The FMCSA requires all active carriers to complete a biennial update, even if no details have changed.
Yes. However, many carriers use compliance services to avoid mistakes, missed deadlines, or authority disruptions.
FCCR Compliance Assistance
Missing an MCS-150 filing deadline can lead to unnecessary compliance problems and potential disruptions to your operating status. If you’re unsure when your update is due or want help completing the filing correctly, FCCR’s compliance specialists can assist.
FCCR helps carriers manage MCS-150 biennial updates, registration changes, and other FMCSA compliance requirements so you can focus on running your business.
Ready to file your MCS-150?
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He is the Lead Content Specialist at FCCR, where he develops educational content focused on trucking compliance, DOT regulations, and FMCSA registration requirements. He works closely with compliance processes and industry systems to provide clear, accurate guidance for owner-operators and carriers.