Buying a Trucking Company: What Happens to the USDOT Number and Operating Authority
When buying a trucking company with authority already in place, one of the most common questions is whether the buyer can keep the seller’s USDOT number and operating authority. Buyers want the company’s history with brokers and shippers, and they want to start hauling the day after closing. Sellers often assume their authority is an asset they can sell.
The answer depends on how the seller is organized and how the transaction is structured. The Federal Motor Carrier Safety Administration (FMCSA) has been direct on this point: USDOT numbers and operating authority are not commodities that can be bought, sold or leased on their own. This article explains, in plain terms, how that affects a trucking acquisition and how to plan the financing around it. It is not legal advice. Transactions involving registration and authority should be reviewed with transportation counsel and confirmed against current FMCSA guidance.
Why This Question Matters for Buyers
A buyer’s plan for the business often depends on authority and registration:
- Customer and broker relationships. Some shippers and brokers set up carriers based on their registration and history.
- Timing. If the buyer needs new registration and authority, the business may not be able to operate under the new owner immediately.
- Safety history. A company’s safety record is tied to its registration, which matters for insurance and customers.
- Deal structure. Whether the buyer purchases assets or the company itself can change what happens to registration and authority.
Lenders care about the same issues because they affect whether revenue continues after closing.
What FMCSA Says You Cannot Do
FMCSA has warned carriers not to sell, purchase or lease USDOT numbers or MC numbers from unknown parties or outside a legitimate corporate transaction. According to FMCSA, prohibited transfers can lead the agency to inactivate the USDOT number and revoke related registrations.
In practical terms, a buyer should not plan a transaction around “buying an MC number.” Registration and authority follow the legal entity and its operations, not a separate sale of the number.
If the Seller Is a Sole Proprietor
FMCSA’s guidance explains that when a motor carrier is a sole proprietor, the USDOT number belongs to that individual. A buyer purchasing the business from a sole proprietor cannot take over the seller’s USDOT number. The buyer needs its own registration.
For operating authority, FMCSA indicates that a sole proprietor selling the business files an out-of-business notification, rather than transferring the authority to the buyer.
What this means for a buyer:
- Plan to obtain your own registration and authority before you begin operating.
- Build the time needed to do so into the closing and transition schedule.
- Expect to set up with customers and brokers as a new carrier, even though you acquired the trucks, customers and staff.
- Consider working capital needs if revenue is interrupted during the transition.
If the Seller Is a Corporation or Other Legal Entity
When the carrier is a corporation, FMCSA’s guidance indicates the USDOT number belongs to the legal entity. If ownership of that entity changes through a legitimate sale or merger, the new owners should update FMCSA’s records to reflect the change in ownership.
FMCSA also explains that if the original entity dissolves and operations continue only under a different entity, the continuing company needs its own USDOT number.
For operating authority, FMCSA indicates it will record changes only following a legitimate business transaction in which operations continue with the same safety management oversight. Corporate transactions may require updated filings.
What this means for a buyer:
- Buying the ownership interests of the existing company may allow the company to keep its registration, with FMCSA records updated for the new ownership.
- Buying only the assets and operating through a different company generally means that company needs its own registration and authority.
- Whether the same safety management continues is relevant to how authority is treated.
Asset Purchase Versus Stock Purchase
Because of these rules, the choice between buying assets and buying the company itself has more consequences in trucking than in many industries.
Asset purchase:
- The buyer chooses which assets and liabilities it takes on.
- Past liabilities, such as prior accident claims, generally stay with the seller, subject to legal review.
- The buyer typically needs its own registration and authority.
- Customer and broker setups may need to be redone under the buyer’s company.
Purchase of the company’s ownership:
- The company continues to exist, which may preserve registration and history, with FMCSA records updated for the ownership change.
- The buyer inherits the company’s liabilities, including its safety history and any claims.
- More extensive due diligence is needed because liabilities come with the company.
- Contracts may still require consent if they include change-of-control provisions.
Neither approach is automatically better. The decision involves legal, tax, insurance and operating considerations and should be made with an attorney and CPA. Our trucking company due diligence checklist covers what to review in either structure.
How Structure Affects Financing
Lenders will want to understand the structure early because it affects both collateral and cash flow:
- Transition risk. If the buyer needs new authority, the lender will want to know how long revenue may be interrupted and how the business will cover expenses in the meantime.
- Liabilities. In a purchase of the company, the lender will look closely at claims, insurance history and safety record because they stay with the business.
- Customer continuity. The lender will want to understand whether customers and brokers will continue working with the company under new ownership.
- Working capital. Many acquisition structures include working capital so the buyer can pay fuel, payroll and insurance during the transition.
SBA-financed acquisitions follow SBA’s rules for changes of ownership, which address both asset purchases and purchases of ownership interests. Your lender will confirm what applies. See our guide to SBA loans for trucking companies.
Practical Steps for Buyers
- Confirm how the seller is legally organized before negotiating structure.
- Ask transportation counsel how registration and authority will be handled in your proposed structure.
- Review the company’s safety and insurance history, whichever structure you choose.
- Build any registration or setup time into your closing timeline and working capital plan.
- Plan how you will notify customers, brokers and insurers of the change.
- Discuss the structure with your lender before signing a letter of intent.
Warning Signs
- A seller offering to sell “just the MC number.”
- Advertisements for aged authority for sale with no underlying business.
- Proposals to lease another company’s authority.
- A deal structure designed mainly to avoid obtaining your own registration.
These approaches can put the registration at risk and may leave a buyer with equipment and no ability to operate.
Frequently Asked Questions
Can I buy an MC number?
FMCSA has warned against buying, selling or leasing USDOT or MC numbers outside a legitimate business transaction.
If I buy a sole proprietor’s trucking business, do I get their USDOT number?
According to FMCSA, a sole proprietor’s USDOT number stays with that individual. The buyer needs its own.
If I buy a trucking corporation, does the authority stay with the company?
FMCSA indicates the USDOT number belongs to the entity and that new owners should update records after a legitimate sale, with authority changes recorded only when operations continue under the same safety management oversight. Confirm your situation with counsel.
Does the structure affect my loan?
Yes. It affects liabilities, transition risk and working capital needs, all of which lenders evaluate.
US Professional Funding helps buyers finance trucking and logistics acquisitions, including working capital to support the transition. Learn more about trucking and logistics acquisition financing.
