Every other year, motor carriers must complete an updated Motor Carrier Identification Report, referred to as the MCS-150. But it can cause headaches, especially for small carriers, including independent owner-operators with their own operating authority.
If an MCS-150 form falls out of date, the Federal Motor Carrier Safety Administration could deactivate the carriers’ USDOT number, and the company could face penalties of up to $1,000 per day, not to exceed $10,000.
While there are third-party companies that will take on the responsibility of submitting the form for a carrier, if there are no major changes to an operation, keeping the MCS-150 up to date can be as simple as updating annual mileage.
The form includes information on the carrier, including the number of miles traveled the previous year, the commodities hauled, insurance information and more. To submit the update, carriers will need their USDOT number and a USDOT pin, so have it handy or plan to wait up to a week for authorities to send it by mail after it’s requested.
The number one reason motor carriers fall into noncompliance with the MCS-150 registration is failing to complete the mandatory biennial update, says FMCSA spokesman Duane DeBruyne. The second most common reason is a lapse in providing proof of the federally required minimum level of insurance.
To remain in compliance, carriers should implement a good system of reminders. It’s also important to remember that even though the form should be updated every other year, it also needs to be updated if there are any changes to how your company operates.
In addition, providing fraudulent or false information on the report is considered an acute violation.
What You May Not Know About the MCS-150
If a motor carrier does not keep on top of the biennial updates of its Motor Carrier Identification Report (MCS-150), it could face deactivation of its USDOT number and daily fines.

If a motor carrier does not keep on top of the biennial updates of its Motor Carrier Identification Report (MCS-150), it could face deactivation of its USDOT number and daily fines.
Graphic: HDT
When do I need to file my MCS-150?
The tricky part can be figuring out when to update the form. The deadline for when a carrier must submit an updated MCS-150 form is based on the last two digits of its USDOT number. The last digit in the USDOT number indicates what month a carrier should update their form (see chart). The next-to-last digit of the USDOT number indicates which year they must update the form (either every even year, or every odd year).

In order to find out the deadline for your MCS-150 biennial update, take a look at the last two digits of your USDOT number. The last digit indicates which month you must file in, and the next-to-last digit indicates whether you must file the form every even or every odd year.
Source: FMCSA
For example, let’s say a USDOT number ends in 34. The three (being an odd number) would indicate that the form is due every odd year. And the four would indicate that the carrier is due in the month of April. So, if your USDOT number ends in 34, you should have filed your MCS-150 form in April 2021.
Although carriers are required to update their MCS-150 every other year, they may want to update it sooner. According to DeBruyne, it is recommended that companies update their information whenever there are changes to the company’s record.
One reason to update it more frequently if operations change is that the information on the MCS-150, such as the number of power units and annualized vehicle miles traveled, are used in the Safety Measurement System in calculating a carrier’s safety performance under the CSA (Compliance, Safety, Accountability) program.
Keeping it updated can improve scores, according to an FMCSA FAQ. An out-of-date MCS-150 form could hurt scores if it’s underreporting the number of power units, if the number of tractor units vs. straight trucks is incorrect, or if the VMT is under- or over-reported.
“It is strongly recommended to update the company records as soon as there is a change,” DeBruyne recommends. “Also, file upon receipt of the Biennial Update letter.”
To fill out a MCS-150 form and to view instructions for submitting the form, visit fmcsa.dot.gov.
More Safety & Compliance

Freightliner Expands Detroit Assurance with New Intersection and Turning Safety Tech
Detroit’s next-generation ABA6 safety system adds cross-traffic detection and enhanced side guard assist with left-turn protection, targeting high-risk urban scenarios.
Read More →
'Beyond Compliance,' Regulations, Driver Coaching on ATRI’s 2026 Research List
The American Transportation Research Institute will examine driver coaching, regulatory impacts — including the "Beyond Compliance" concept —and weather disruptions that shape trucking operations.
Read More →
FMCSA Revamps DataQs to Improve Fairness, Speed of Reviews
New requirements add firm deadlines and independent review steps, addressing long-standing complaints about inconsistent rulings and slow response times.
Read More →
FMCSA Extends Paper Medical Card Exemption … Again
Five states still aren't ready to accept commercial driver medical exam information directly from the medical examiner's registry.
Read More →
HDT Honors the Best New Products of 2025 at TMC [Photos]
Heavy Duty Trucking's Top 20 Products awards recognize the best new products and technologies. Check out the award presentations at the 2026 Technology & Maintenance Council annual meeting.
Read More →
Detroit Engines: Trusted Performance, Built for What's Next
The Detroit® Gen 6 engine platform proves that real progress doesn’t require a complete redesign. Built on 20 years of trusted technology, these engines are designed for efficiency, stronger performance, and greater reliability than before. And they do it all while complying with 2027 EPA standards on every mile.
Read More →
Aperia Expands Halo Platform with Steer-Tire Inflation System, Fifth-Wheel Integration
Aperia Technologies introduced a new automatic tire inflation system for steer axles and a partnership with Fontaine Fifth Wheel to integrate coupling status into its Halo Connect platform.
Read More →
Fleetworthy and HAAS Alert Expand Partnership Stopped Truck Protection Alerts
Fleetworthy and HAAS Alert expanded their partnership to deliver real-time digital alerts that warn motorists when commercial trucks are stopped roadside and notify truck drivers when approaching emergency responders.
Read More →
New Entrants, Chameleon Carriers, and Safety: Is It Too Easy to Start a Trucking Company?
More than 100,000 new trucking companies enter the industry each year, but regulators manage to audit only a fraction of them. That churn creates opportunities for inexperienced startups — and for “chameleon carriers” that shut down after safety violations and reappear under new identities. Read more from Deborah Lockridge in this commentary.
Read More →
Mack Introduces Mack Protect Collision Mitigation System for MD Series
Mack Trucks has expanded its proprietary Mack Protect collision mitigation platform to the Mack MD Series, bringing heavy-duty safety technology to medium-duty trucks operating in urban and regional environments.
Read More →
