Are MC Numbers Being Retired? What Trucking Companies Need to Know
The Federal Motor Carrier Safety Administration (FMCSA) is changing the way it identifies trucking companies. Starting October 1, 2025, the FMCSA will stop issuing and using MC numbers. Every motor carrier, broker, and freight forwarder will instead be tracked using only a USDOT number.
This change is part of the Unified Registration System (URS), which is designed to simplify the FMCSA’s registration process and reduce fraud in the trucking industry. Whether you’re new to the field or have years of experience, this update affects everyone engaged in interstate operations.
What Are MC Numbers?
An MC number is a unique ID the FMCSA uses to show that a motor carrier, broker, or freight forwarder has the legal right to operate in interstate commerce. For years, MC numbers have worked alongside USDOT numbers to help the agency monitor company status, safety performance, and authority status.
These numbers have traditionally been used in regulatory filings, insurance forms, and business materials. They’ve also been critical for verifying operating authority before a company could haul cargo or transport passengers for hire.
Why the FMCSA Is Ending MC Numbers
The FMCSA is simplifying its tracking systems to make the registration process easier for both the agency and the industry. Using one number instead of two eliminates confusion and helps prevent fraudulent activity, such as carriers using fake or duplicate identities.
In addition, merging everything under the USDOT number aligns with the agency’s long-term goals for system transparency and accountability.
Understanding the Unified Registration System
The Unified Registration System is FMCSA’s central database for keeping track of all company information. Under URS, each business will have only one ID: the USDOT number. The system will use internal tags to show whether the company is a motor carrier, broker, or freight forwarder.
This setup improves data accuracy and speeds up the registration and update process. It also helps ensure that each company has a single record that can be maintained and reviewed over time. Companies will still need to register for new authorities or make updates through the FMCSA portal, but the process will now be streamlined under one unified record.
What Happens to Current MC Numbers?
Existing MC numbers will not be converted or merged. Instead, they’ll simply be phased out. Your motor carrier authority will stay active, but your USDOT number will become your sole identifier.
If your company only had an MC number before, FMCSA will assign you a USDOT number to make sure you stay in compliance. This update applies to all types of companies involved in commercial transportation, including those moving freight or passengers.
What Trucking Companies Must Update
After October 1, 2025, you’ll need to remove all MC numbers from your materials and replace them with your USDOT number. This includes:
- Vehicle decals and signage
- Contracts and rate confirmations
- Insurance documents
- Registration forms and business licenses
- Marketing materials and websites
Companies that fail to update their documents may run into delays when working with shippers, brokers, or law enforcement inspecting commercial motor vehicles. Inspectors and compliance officers will only look for the USDOT number during roadside checks or compliance reviews.
How to Verify Operating Authority Going Forward
All carriers will have their operating authority and safety data tied to their USDOT number. Partners and enforcement agencies will use FMCSA’s online tools like SAFER and URS to check credentials.
This change means carriers will only need to manage one number across all parts of the registration and compliance process. Your USDOT profile will contain all the key information that used to be spread across multiple databases.
New Applicants: Registering Without MC Numbers
Anyone starting a trucking business will only receive a USDOT number. Whether you’re a motor carrier, broker, or freight forwarder, you’ll go through a single registration process to obtain authority and meet safety requirements.
The streamlined process will make it easier to register and get approved for operations, especially for small businesses or owner-operators trying to enter the market. It reduces paperwork and improves accuracy during FMCSA reviews.
Does This Include Exempt Carriers?
Yes, even exempt carriers, those not required to hold standard operating authority, must be listed under the USDOT system. Their status will still appear in FMCSA’s registration system and must be kept up to date.
This ensures consistency in the system and helps regulators verify that all motor carriers are accounted for, even if they operate under exemptions.
Brokers and Freight Forwarders Must Register Too
Brokers and freight forwarders also need to follow this change. If they previously operated with only an MC number, the FMCSA will assign a USDOT number. These companies must update all filings, contracts, and internal systems to reflect the new identifier.
Failure to update registration materials may result in delays in processing applications or hiring new carriers.
Why the Change Matters for Motor Carrier Safety
Using a single number across all types of commercial motor vehicles will make it easier to track safety records and prevent fraud. The FMCSA can act more quickly against bad actors, and carriers can spend less time managing administrative tasks.
It also helps law enforcement and brokers quickly verify a company’s credentials during roadside inspections or onboarding. Whether you transport cargo or passengers, this shift promotes better visibility and fewer opportunities for miscommunication.
How to Prepare for the Transition
To stay ahead of the transition, every motor carrier and broker should:
- Log in to FMCSA’s portal to confirm their registration is current
- Replace MC numbers on all public-facing and legal materials
- Train staff to use the USDOT number across the board
- Notify partners and customers about the change
This gives your business time to make changes gradually before the cutoff date. Being proactive will reduce headaches later.
Final Thoughts: Embrace the USDOT Number as Your Primary ID
The shift away from MC numbers may feel like a big adjustment, but it benefits carriers in the long run. It improves data accuracy, protects against fraud, and speeds up the registration and verification process.
By October 1, 2025, every motor carrier must use its USDOT number for all official business. Take steps now to review your materials, update your systems, and ensure continued access to federal systems and services. When the change takes effect, your USDOT number will be the key to maintaining operating authority, staying compliant with federal regulations, and continuing smooth operation within the commercial trucking industry.
For more information, you can read the FMCSA’s Registration Modernization FAQs
Related Articles: