Do Not Sell, Purchase, or Lease Your USDOT or MC Number - FMCSA’s Warning Is Clear — and the Consequences Are Immediate. Here’s What Every Carrier, Buyer, and Broker Needs to Know.

By SafetyLane Magazine Editorial Staff

There is a market for them. There are companies openly advertising them for sale. Some go for as much as $30,000. And every single transaction — whether you are the buyer, the seller, or the broker in the middle — can destroy your operating authority, trigger criminal referrals, and end your career in trucking.

We are talking about USDOT Numbers and MC Numbers — the federal identifiers that define who you are in the eyes of the Federal Motor Carrier Safety Administration. And FMCSA’s position on trading them could not be clearer: don’t.

“The USDOT Number belongs to the same legal person forever and may not be sold, transferred, rented, or leased.” — FMCSA Official Guidance

In a regulatory environment where FMCSA is aggressively dismantling chameleon carrier networks, modernizing its registration infrastructure through MOTUS, and scrutinizing every affiliation disclosure filed under penalty of perjury, understanding this rule is not optional. It is survival.

What Are USDOT Numbers and MC Numbers — and Why Do They Matter?

If you operate a commercial motor vehicle in interstate commerce, you know your USDOT Number. It is your company’s identity in the federal system — the number FMCSA uses to track your safety performance, your crash history, your inspection record, and your compliance posture. Every carrier, broker, freight forwarder, and other regulated entity in the FMCSA ecosystem is identified by one.

Think of it the way FMCSA itself does: like a driver’s license number. It is assigned to a specific legal person. It travels with that person’s safety history. It cannot be handed off any more than you can hand off your Social Security number.

The MC Number — Motor Carrier Number, or Operating Authority — is a related but distinct registration. It authorizes for-hire carriers, brokers, and freight forwarders to conduct interstate commercial operations. Historically, MC numbers carried route-specific restrictions under the old Interstate Commerce Commission system, which made transfers common and commercially valuable. That world no longer exists. Since Congress eliminated route limitations, operating authority has no geographic ceiling. You can haul anywhere. That largely eliminates the business rationale for a legitimate transfer — and it leaves behind only one reason people still want to buy them: your safety history and shipper relationships.

That is precisely the problem.

The Rule: A USDOT Number Cannot Be Sold. Period.

FMCSA’s guidance is explicit. Upon discovery of any attempt to sell, purchase, or lease a USDOT Number or Operating Authority outside of a legitimate corporate transaction, the agency will initiate proceedings to inactivate the USDOT Number and revoke all related registrations, including safety registration under 49 U.S.C. § 31134 and operating authority under 49 U.S.C. §§ 13901–13905.

There are no warnings. There is no grace period. There is no “we’ll look the other way if you’re small.” The agency will inactivate your number the moment it discovers the number is being used by anyone other than the assigned legal person.

Let’s walk through the three main scenarios FMCSA addresses:

Scenario 1: The Sole Proprietor

If you operate as a sole proprietor — think John Doe d/b/a Doe Trucking — your USDOT Number is yours and only yours, for life. There is no mechanism by which another person can ever use it. If John Doe retires, stops hauling, or simply wants to get out of the business, that USDOT Number dies with his operating entity. It cannot be sold to a buyer, rented to a nephew, or leased to a new startup.

Full stop.

Scenario 2: The Corporation

Corporations are different legal entities from their owners. When John Doe incorporates as John Doe, Inc., the company — not John personally — holds the USDOT Number. If John sells the company as a going concern, including its trucks, contracts, safety management systems, and operations, the USDOT Number goes with the company. That is a legitimate corporate transaction.

But here is where carriers frequently get tripped up: if what is actually being sold is just the number — stripped of its real operational context, packaged as a commodity with a clean safety record and a prized Amazon Relay relationship — FMCSA does not recognize that as a legitimate transfer. And the agency is paying close attention.

In a merger or acquisition, FMCSA will record a transfer of operating authority only if motor carrier operations will continue with the same safety management oversight and controls after the transaction. In many cases, a simple ownership update is all that is required. In others, the surviving entity will need its own USDOT Number. Failing to follow those rules correctly can result in revocation of authority regardless of the intent of the parties.

Key Rule: FMCSA will only recognize a transfer of operating authority if motor carrier operations continue with the same safety management oversight and controls after the corporate transaction.

Scenario 3: The MC Number — Not a Commodity

Some compliance professionals are surprised to learn that MC Numbers can, under specific circumstances, be transferred. FMCSA does allow recorded transfers following legitimate business transactions — mergers, acquisitions, and restructurings where genuine business operations continue under a new controlling entity.

What FMCSA does not allow — and what the agency is actively cracking down on — is the gray and black market that has developed around MC numbers with clean records and valuable shipper onboarding. Freight fraud watchdogs have documented networks setting up MC registrations in the hundreds and even thousands, sometimes purchasing them from existing carriers to avoid detection by vetting software and FMCSA itself.

The attraction is straightforward: a carrier with two years of clean operation and an approved relationship with a major load platform is worth real money to someone who has a bad safety history and can’t get through the front door legitimately. Platforms like Amazon Relay have made their position clear: the transfer of a carrier’s agreement or account without prior consent is prohibited. And FMCSA has made its position equally clear: the agency wants to take a hard look at every MC number sale, even when the transaction is not directly a violation of the regulations.

The Enforcement Environment in 2026: This Is Not the Time to Test the Rule

If you were operating in 2015 and wondered whether FMCSA was really watching, you might have had some legitimate doubt. Today, that doubt is not reasonable.

The agency’s crackdown on chameleon carriers — operators who accumulate safety violations, shut down, and reopen under new identities to escape their enforcement history — is one of the most aggressive enforcement campaigns in FMCSA’s recent history. The Indiana crash involving a non-domiciled driver and an interconnected network of carriers, including entities with undisclosed cross-ownership, has become the agency’s rallying case. FMCSA Administrator Derek Barrs stated it plainly: “We’ve got to unmask chameleon carriers.”

The tools the agency is now deploying include:

●      MOTUS: FMCSA’s new registration modernization platform, adding photo ID verification, physical business location validation, and multi-factor authentication to the registration process. The system is designed to prevent fraudulent operators from cycling back in under new identities.

●      PPOB Enforcement: The agency is restoring aggressive Principal Place of Business enforcement, requiring that registered business addresses be real, inspectable locations. Carriers must be able to produce records for FMCSA inspection within 48 hours. Ghost offices are being shut down.

●      Severity Scoring: An internal DOT memo revealed that the agency is developing a behavioral risk scoring model that flags carriers exhibiting patterns associated with fraud — shared addresses, rapid DOT number turnover, duplicate contact information, equipment reported under multiple numbers in short time spans.

●      Affiliation Disclosure: All URS applicants must disclose affiliations to other FMCSA-regulated entities under penalty of perjury. The agency has signaled its intent to enforce this aggressively, and proposed federal legislation would green-light $10,000 fines per violation.

●      Cross-Agency Referrals: FMCSA is now routinely referring suspected fraud to DOT’s Office of Inspector General. These are not regulatory violations with a compliance pathway. They are criminal referrals.

Against this backdrop, any carrier, buyer, or broker engaging in a USDOT or MC number transaction outside of a clean, properly documented corporate event is not just bending a rule. They are stepping directly into the center of a federal enforcement bulls-eye.

What a Legitimate Corporate Transfer Actually Looks Like

Not every business transfer involving a USDOT Number is illegal. FMCSA contemplates and accommodates legitimate corporate events. If you are involved in one, here is what proper compliance looks like:

●      The entire operating business — trucks, operations, employees, safety management systems, contracts — is being transferred, not just the number.

●      The acquiring entity will operate with the same or equivalent safety management oversight that existed under the prior owner. If safety culture and management are being replaced wholesale, that is a material change FMCSA cares about.

●      FMCSA records are updated immediately following the transaction. The new owners must update ownership information, corporate officer changes, and all applicable demographic data in the agency’s systems as soon as the transaction closes.

●      If a new entity is formed through the transaction, FMCSA is notified and the question of whether to record a transfer or obtain new authority is addressed proactively — not ignored until the agency discovers the discrepancy.

●      All affiliations between the new entity and any other FMCSA-regulated entity are disclosed in the URS application.

If you are uncertain whether your corporate transaction meets these standards, consult a qualified transportation compliance consultant or attorney before you close. Getting the analysis wrong after the fact is far more costly than getting it right before the transaction executes.

The Fraud and Identity Theft Angle: Are You a Victim?

USDOT Number fraud is not always perpetrated by the carrier who holds the number. In a growing number of cases, carriers discover that their number is being used without their knowledge — by freight fraudsters impersonating their company, by bad actors who have obtained their FMCSA portal credentials, or by shell companies operating in the shadows of their registration data.

FMCSA treats this as the criminal act it is. If you suspect your company’s USDOT Number or identity is being used fraudulently, take these steps immediately:

●      Do not click suspicious links referencing your USDOT number, company name, or FMCSA registration.

●      Verify your company’s information in the FMCSA SAFER system at safer.fmcsa.dot.gov to confirm your phone numbers, address, and contact data are accurate and have not been altered.

●      Contact the FMCSA Contact Center at 1-800-832-5660.

●      Report to the DOT Office of Inspector General OIG Hotline at 1-800-424-9071 or online at oig.dot.gov/hotline.

●      File a complaint with FMCSA’s National Consumer Complaint Database at nccdb.fmcsa.dot.gov.

●      Notify your insurance carrier, factoring company, and any load boards where your MC or USDOT number is registered.

The window for response matters. The longer fraudulent use continues, the more compliance and enforcement history attaches to your number.

FMCSA’s Enforcement Response at a Glance

Violation	FMCSA Action
Selling or buying a USDOT Number as a standalone transaction	Immediate inactivation of the USDOT Number and revocation of all related registrations
Leasing or renting a USDOT Number to another party	Inactivation of USDOT Number; potential referral to law enforcement
Using an affiliate to circumvent enforcement history	Revocation of operating authority; enforcement proceedings under 49 U.S.C. 13901
Corporate transfer without proper FMCSA notification	Revocation of operating authority; requirement to obtain new authority
Failure to disclose affiliations in URS under penalty of perjury	Perjury exposure; deactivation; proposed legislation allows $10,000 fine per violation
Operating under another carrier's USDOT Number	Criminal fraud referral; immediate out-of-service

Bottom Line for Carriers, Buyers, and Brokers

The appeal of buying a clean USDOT or MC number is understandable. Building compliance history from scratch takes time. Getting on major load platforms takes time. Avoiding an Unsatisfactory or Conditional safety rating takes work. The gray market for established numbers offers a shortcut.

But FMCSA’s modernized registration environment, its behavioral risk scoring systems, its MOTUS identity verification requirements, and its renewed appetite for criminal referrals have collectively made that shortcut one of the most dangerous moves a carrier can make in 2026.

If you are buying a number, you are not buying a clean slate. You are buying an enforcement target.

Legitimate growth in this industry is built on operational excellence, documented safety management, and a compliance record that survives scrutiny. There is no substitute, and there is no shortcut that FMCSA is not now equipped to find.

Build it right. Register it right. And if you are in the middle of a corporate transaction that involves a USDOT Number, get qualified compliance counsel before you close.

About SafetyLane Magazine

SafetyLane Magazine is an independent publication covering federal motor carrier safety regulation, compliance, and industry developments. This article is provided for informational purposes and does not constitute legal advice. Carriers with specific questions about USDOT or MC number transactions should consult a qualified transportation attorney or compliance consultant.

Additional resources: FMCSA — Do Not Sell, Purchase, or Lease a USDOT or MC Number: fmcsa.dot.gov ● FMCSA SAFER System: safer.fmcsa.dot.gov ● DOT OIG Hotline: 1-800-424-9071 ● FMCSA Contact Center: 1-800-832-5660