Closing a DOT number should be handled carefully. Many carriers think that if they sold their truck, stopped hauling freight, paused operations, or closed the business, the DOT number automatically stops being active. That is not always the case. If a USDOT number remains active in FMCSA records, the company may still appear as an active regulated entity. That can create confusion around MCS-150 updates, UCR registration, SAFER profile status, operating authority, insurance filings, drug and alcohol testing requirements, Clearinghouse obligations, and future compliance notices.
For owner-operators, small fleets, private carriers, brokers, freight forwarders, and commercial vehicle businesses, closing a DOT number is not just a checkbox. It should be reviewed as part of a full shutdown, pause, restructuring, sale, or transition process. The main federal filing used to inactivate a USDOT number is the MCS-150. If the company also has active operating authority, FMCSA may require Form OCE-46 to inactivate or revoke that authority. The important point is simple: closing a DOT number is paperwork, and the paperwork should match what actually happened to the business.
What Does It Mean to Close a DOT Number?
When people say they need to “close a DOT number,” they may mean several different things. They may mean:
- Deactivate DOT number
- Close DOT number
- Inactivate USDOT number
- File out of business notification
- Stop operating commercial motor vehicles
- Revoke operating authority
- Suspend operations
- Deactivate MC number
- Shut down a trucking company
- Pause a DOT record
- Update FMCSA profile
- Update SAFER status
- Cancel authority
- Stop UCR filing obligations
- The correct paperwork depends on the situation.
A company that only has a USDOT number may need one type of filing. A company with active operating authority may need additional paperwork. A broker may have different issues than a motor carrier. A private fleet may need to update DOT records but not operating authority. A carrier that may restart later may need to think differently from a company that is permanently closing. This is why the first step is identifying exactly what the business is trying to do.
When Should a DOT Number Be Closed?
A company may need to close or deactivate a DOT number when it no longer operates commercial motor vehicles requiring a USDOT number. Common reasons include:
- The business shut down.
- The company sold its trucks.
- The owner-operator stopped hauling freight.
- The company merged into another entity.
- The business changed structure.
- The company no longer operates interstate.
- The company no longer operates commercial motor vehicles.
- The company filed out of business.
- The carrier wants to avoid future filing obligations.
- The owner is retiring.
- The company no longer needs DOT registration.
- The business moved operations to another USDOT record.
- The company is cleaning up old public records.
The carrier should not leave an active DOT number open by accident. If the company no longer operates, the public record should generally be updated to reflect that status.
Closing a DOT Number vs. Letting It Go Inactive
Some carriers miss the MCS-150 biennial update and later discover their DOT number became inactive. That is different from intentionally closing the DOT number. A missed biennial update can lead to FMCSA deactivation of the USDOT number. But allowing a DOT number to go inactive because of a missed filing is not the same as properly notifying FMCSA that the company is out of business or no longer needs the USDOT number.
If the company is truly closing, the cleaner approach is to file the proper out-of-business notification rather than simply ignore future filing obligations. Ignoring notices can create confusion, possible penalties, and unresolved public record issues.
The Main Form: MCS-150 Out of Business Notification
FMCSA states that to inactivate a USDOT number, a company must submit Form MCS-150 and select the reason for filing as “Out of Business.” This is the federal filing that tells FMCSA the company is no longer using the USDOT number. The MCS-150 is also the form used for other USDOT record updates, including:
- MCS-150 update
- MCS-150 filing
- MCS-150 biennial update
- FMCSA biennial update
- DOT biennial update
- USDOT biennial update
- DOT number update
- USDOT number update
- FMCSA profile update
- SAFER update
- MCS-150 reactivation
- Reactivate DOT number
- Deactivate DOT number
- Close DOT number
- Change DOT number address
- Change DOT company name
Because the MCS-150 can be used for different purposes, the reason for filing matters. A carrier trying to close the DOT number should not accidentally file a routine update or reactivation instead of an out-of-business notification.
If You Have Active Operating Authority
A USDOT number and operating authority are related but separate. A USDOT number identifies the company for safety registration and monitoring. Operating authority, often connected to an MC number, authorizes certain for-hire transportation, broker, or freight forwarder activities. If a company has active operating authority connected to the USDOT number, closing the DOT number may require additional paperwork.
FMCSA states that if there is active operating authority linked to the USDOT number, the company must submit Form OCE-46 along with the MCS-150. Form OCE-46 must be notarized or signed in the presence of an FMCSA staff member. This can apply to:
- Motor carrier authority
- MC number
- Operating authority
- Broker authority
- Freight forwarder authority
- FMCSA operating authority
A carrier should not assume that filing the MCS-150 automatically resolves active authority. The authority record should be reviewed separately.
DOT Number vs. MC Number Closure
A DOT number and an MC number are not the same. A company may need to close the USDOT number, revoke operating authority, or both. For example:
- A private fleet may have a USDOT number but no MC number.
- A for-hire motor carrier may have both a USDOT number and MC authority.
- A broker may have broker authority but no trucks.
- A freight forwarder may have authority and separate registration concerns.
- A company may stop hauling freight but keep another transportation function.
- A company may sell trucks but keep broker authority.
- A company may pause carrier operations but intend to return.
The correct filing depends on the full record. A carrier should review both USDOT status and operating authority before assuming the closure is complete.
What About UCR?
UCR is separate from the MCS-150 and operating authority. UCR stands for Unified Carrier Registration. It is an annual registration requirement for many interstate motor carriers, motor private carriers, brokers, freight forwarders, and leasing companies. If a company is closing, it should review whether UCR is still due for the current year or whether prior filings are missing. A company should review:
- UCR
- UCR registration
- UCR filing
- UCR renewal
- Unified Carrier Registration
- File UCR online
- UCR registration online
- UCR renewal online
- 2026 UCR filing
- 2027 UCR filing
- UCR fees
- UCR filing deadline
- Who needs UCR
- Do private carriers need UCR
- Do brokers need UCR
- UCR for owner operators
- UCR for intrastate carriers
- UCR power unit count
- UCR interstate commerce
- UCR compliance
- UCR penalties
- UCR registration lookup
- UCR participating states
- UCR non-participating states
Closing a DOT number does not automatically answer every UCR question. The business should review whether it operated during the registration year and whether any filing obligation remains.
What About Insurance Filings?
Insurance should also be reviewed before closing a DOT number or operating authority. A motor carrier with active authority may have insurance filings connected to that authority. If the company is revoking authority, insurance filings may need to be addressed. If the company is only pausing operations, the company should consider whether insurance should be canceled, changed, or maintained.
This is not just a cost decision. It can affect authority status, contracts, claims, and future operations. A carrier should coordinate with its insurance provider before making changes.
What About BOC-3?
BOC-3 is a process agent filing commonly required for companies with FMCSA operating authority. If the company revokes operating authority and closes the business, BOC-3 may no longer be needed for future operations. However, the carrier should still keep historical records.
A company should not assume that BOC-3 filing, insurance cancellation, and authority revocation all happen automatically together. Each item should be reviewed.
What About MOTUS Access?
MOTUS is FMCSA’s newer registration system and account management environment. Even if a company is closing its DOT number, MOTUS access may still matter. The company may need to manage registration actions, confirm account control, update company status, remove authorized users, or preserve confirmation records. A company should review:
- MOTUS registration
- MOTUS enrollment
- FMCSA MOTUS support
- Login.gov access
- Company Official information
- Authorized users
- USDOT number status
- Whether a prior vendor controls access
- Whether former employees have access
- Whether the account can be accessed for future records
If the company cannot access its account, a closing filing can become delayed.
What About SAFER?
SAFER is one of the public systems where FMCSA information can be viewed. After filing to close or deactivate a DOT number, the company should monitor SAFER to confirm the public record reflects the correct status.
SAFER may be reviewed by brokers, shippers, insurers, state agencies, lenders, factoring companies, and future business partners. A company should verify:
- USDOT status
- Operating status
- Company name
- Address
- Phone number
- MCS-150 date
- Power units
- Driver count
- Authority status
- Safety rating, if any
Public record accuracy matters even after a business stops operating.
What About Drug and Alcohol Testing?
If the company employed CDL drivers subject to FMCSA drug and alcohol testing requirements, closing the DOT number should include review of drug and alcohol records. The company may need to preserve:
- DOT drug testing records
- DOT drug and alcohol testing policy
- DOT random testing consortium records
- Owner operator drug testing consortium records
- C/TPA records
- FMCSA Clearinghouse records
- Clearinghouse annual query records
- Clearinghouse pre-employment query records
- Clearinghouse consent records
- Clearinghouse violation records
- Clearinghouse return to duty records
- Reasonable suspicion training records
- Supervisor reasonable suspicion training records
- DOT alcohol testing records
- Pre-employment drug test CDL records
- Post-accident drug testing DOT records
- Return-to-duty process records
Closing the DOT number does not mean the company should destroy compliance records immediately. Record retention matters.
What About Driver Qualification Files?
Driver Qualification Files should also be reviewed and preserved according to applicable retention requirements. A company closing its DOT number may still need to keep:
- Driver Qualification File records
- DQ file records
- DOT driver file records
- Driver applications
- CDL copies or license verification
- MVR records
- Medical qualification records
- Prior employer safety performance history where required
- Annual review records
- Driver qualification requirements documentation
- CDL employer requirements documentation
- CDL compliance records
If the business is audited, sued, involved in a claim, or later restarts operations, these records may matter.
What About State and Local Requirements?
Closing the federal DOT number may not close every state or local requirement. A company may also need to review:
- State DOT number
- State motor carrier registration
- State operating permits
- IRP
- IFTA
- State fuel tax accounts
- State weight distance permits
- Business licenses
- Secretary of State entity status
- State tax accounts
- Local permits
- Vehicle registrations
- Apportioned plates
- IFTA decals
- Heavy vehicle use tax records
- Lease agreements
- Yard or facility permits
State-level requirements vary. A federal DOT closure should not be treated as a complete business shutdown checklist by itself.
What If I Might Restart Later?
Some companies want to close a DOT number permanently. Others only want to pause operations. This distinction matters. If the company may restart later, the owner should review whether full deactivation is the right step or whether other filings, insurance changes, authority status changes, or operational pauses are more appropriate. Questions to ask include:
- Will the same business operate again?
- Will the same equipment be used?
- Will the same authority be needed?
- Will insurance be restarted later?
- Will the company keep its entity active?
- Will the owner start a new company?
- Will the DOT number be reactivated later?
- Will the business keep broker or freight forwarder authority?
- Will UCR be needed next year?
A company that plans to restart should preserve records carefully and avoid unnecessary confusion in the public record.
What If I Sold My Truck?
Selling a truck does not automatically close a DOT number. A one-truck owner-operator who sells the truck should review whether the company still operates any commercial motor vehicles or expects to operate again. If there are no more commercial motor vehicles and the business is no longer operating, the owner may need to file the MCS-150 as out of business. The owner should also review:
- UCR
- Insurance
- Authority
- BOC-3
- SAFER
- MOTUS access
- Drug and alcohol testing program
- Clearinghouse
- Driver Qualification File
- Vehicle maintenance records
- State registration
- IFTA and IRP
Selling equipment is only one part of the compliance cleanup.
What If I Closed the Business Entity?
Closing the business entity with the State does not automatically close the DOT number with FMCSA. A company may dissolve an LLC, corporation, or partnership and still have an active USDOT record unless FMCSA is notified properly. The business should coordinate:
- Secretary of State dissolution
- Federal DOT number closure
- Operating authority revocation
- UCR review
- Insurance cancellation
- Tax account closure
- Vehicle registration cancellation
- IRP and IFTA closure
- State DOT closure
- Record retention
A state business filing and FMCSA filing are separate.
What If My DOT Number Is Already Inactive?
If the DOT number is already inactive, the company should review why. It may be inactive because:
- The biennial update was missed.
- An out-of-business notification was filed.
- New entrant registration was revoked.
- FMCSA records were not maintained.
- A prior filing changed the status.
- The company voluntarily stopped operating.
If the company is truly out of business, the owner should confirm whether the inactive status is correct and whether authority, UCR, insurance, state records, and other filings also need review. If the company wants to resume operations, the issue is no longer closure. It may require MCS-150 reactivation or a different registration action.
What Paperwork Is Usually Required?
The required paperwork depends on the carrier’s record, but a typical review may involve:
- MCS-150 form or applicable MCS-150 series form
- Out of Business Notification
- OCE-46 if active operating authority is linked to the USDOT number
- Supporting identification or company documentation, if requested
- MOTUS access review
- Operating authority review
- Insurance filing review
- BOC-3 review
- UCR status review
- SAFER status review
- State registration review
- IRP and IFTA review, if applicable
- Drug and alcohol program closure or record retention review
- Clearinghouse record review
- Driver Qualification File retention review
- Vehicle maintenance record retention review
The MCS-150 may be the main federal DOT number closure form, but it is rarely the only item the business should think about.
What Should You Save After Closing a DOT Number?
After closing a DOT number, the company should save proof of the filing and related records. Recommended records include:
- Copy of submitted MCS-150
- Proof of Out of Business filing
- OCE-46, if applicable
- Confirmation numbers
- Submission receipts
- FMCSA correspondence
- SAFER screenshot after status update
- Authority status confirmation
- Insurance cancellation or status records
- BOC-3 records
- UCR filings
- Drug and alcohol testing records
- Clearinghouse records
- Driver Qualification Files
- Vehicle maintenance records
- Inspection reports
- Accident register
- Tax and registration records
- State closure filings
- Business dissolution documents
Future questions are easier to answer when records are organized.
Common Mistakes When Closing a DOT Number
Common mistakes include:
- Assuming selling the truck closes the DOT number
- Assuming closing the LLC closes the DOT number
- Missing the MCS-150 Out of Business filing
- Forgetting active operating authority
- Forgetting Form OCE-46
- Canceling insurance before reviewing authority consequences
- Ignoring UCR
- Ignoring state registrations
- Failing to monitor SAFER after filing
- Destroying records too early
- Leaving old MOTUS users active
- Failing to preserve Clearinghouse and drug testing records
- Failing to close IRP or IFTA where needed
- Confusing DOT deactivation with DOT reactivation
- Letting the DOT number go inactive by missing the biennial update instead of filing correctly
These mistakes can create future administrative problems.
Why Professional Support Matters
Closing a DOT number sounds simple, but it can touch many parts of the business. The company may need to review MCS-150, operating authority, MC number, UCR, insurance, BOC-3, SAFER, MOTUS, state registrations, drug and alcohol testing, Clearinghouse, Driver Qualification Files, vehicle records, and tax accounts. That is why professional filing support can be helpful.
A compliance team can help determine whether the company should deactivate the DOT number, revoke authority, update records, preserve documents, review UCR, and make sure the public record reflects the actual status of the business. This is similar to working with a local accounting firm when closing a business account or filing a tax return. The form may be available online, but the value is in knowing which form applies, what information should be used, what else may be connected, and what records should be kept.
Dakota Group Can Help
If you need to close your DOT number, deactivate a USDOT number, file an MCS-150 Out of Business Notification, revoke operating authority, review an MC number, update SAFER, confirm UCR, or clean up FMCSA records, Dakota Group can help.
Dakota Group supports motor carriers, owner-operators, private fleets, brokers, freight forwarders, construction companies, utility fleets, and commercial vehicle businesses with DOT deactivation, Close DOT number filings, MCS-150 updates, FMCSA profile update, SAFER update, MOTUS registration, MOTUS enrollment, FMCSA MOTUS support, UCR registration, UCR filing, operating authority, BOC-3 filing, Drug and Alcohol Management, FMCSA Clearinghouse support, Driver Qualification File review, DOT audit checklist preparation, and broader trucking compliance paperwork.
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Dakota Group’s U.S.-based compliance specialists are available live Monday through Friday to help operators understand what paperwork is required, prepare the right filings, preserve the right records, and reduce the risk of public record issues, filing errors, penalties, and future operational delays.
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