How to Deactivate Your USDOT and MC Numbers (Without Getting Fined)

What Are USDOT and MC Numbers?

Before we dive into the shutdown process, let’s quickly define what these numbers are and why they matter.

USDOT Number

Issued by the FMCSA, your USDOT number is used to track your company’s safety record, inspections, and compliance status. It’s required for any company that:

• Operates commercial vehicles in interstate commerce
• Transports passengers or cargo across state lines
• Handles hazardous materials

MC Number (Operating Authority)

If you stop operating but don’t formally deactivate these numbers, you’re still legally responsible for:

• Filing your biennial MCS-150 updates
• Maintaining safety and compliance programs
• Being subject to audits or reviews
• Renewing insurance coverage

Worse, the FMCSA may continue to show your company as “active” in the SAFER System, which can lead to regulatory penalties and miscommunications with brokers or clients.

According to the Moving Authority Association, violations tied to inactive DOT numbers can result in fines between $1,000 and $75,000, depending on the issue.

When Should You Deactivate?

You should deactivate your USDOT and MC numbers if:

• You’ve permanently stopped operations
• You’ve sold or transferred your fleet
• You’ve changed business models and no longer need interstate operating authority
• You’re dissolving or closing your company

If you’re unsure about whether your business still qualifies, it’s best to err on the side of caution and deactivate.

How to Deactivate Your USDOT Number

The FMCSA requires that you submit an updated MCS-150 form and indicate your intent to go out of business.

Steps:

1. Visit the FMCSA’s official guide on USDOT deactivation.
2. Complete the MCS-150 form — select “Out of Business” in the appropriate section.
3. Submit the form online through the FMCSA Portal, or by mail/fax (slower).
4. Keep your PIN number handy — you’ll need it to access your account.

There is no fee to deactivate a USDOT number, but it’s critical that you do it correctly.

How to Deactivate Your MC Number

To cancel your MC number (operating authority), you must submit a Voluntary Revocation of Authority through the FMCSA’s registration system.

Steps:

1. Log in to your FMCSA Registration Portal.
2. Select Voluntary Revocation of Operating Authority.
3. Submit the request digitally or by fax/mail (as outlined on the portal).
4. Wait 3–5 business days for confirmation of cancellation.

If you're unable to access the portal, you may need to submit a written request with your MC number, USDOT number, business name, and reason for deactivation.

Pro tip: Don’t assume that deactivating one automatically cancels the other. You must deactivate both your USDOT and MC numbers separately.

What Happens If You Don’t Deactivate?

Leaving your authority active can create a legal and financial mess — even if you’ve stopped driving or sold your trucks.

You Could Be Hit With:

• Fines for non-compliance (e.g., failure to update MCS-150)
• Insurance violations if policies lapse but your authority stays open
• Random FMCSA audits because your business still appears active
• Ongoing registration responsibilities (you’re still expected to file and renew)

According to Moving Authority, the financial risk is real, with fines for DOT-related violations ranging from $1,000 to $75,000.

Final Tips for a Clean Deactivation

Here’s how to ensure your shutdown is thorough and compliant:

• Cancel your insurance policies only after FMCSA has acknowledged your revocation.
• Notify any brokers or clients who have your authority on file.
• Save your confirmation emails or letters from the FMCSA for your records.
• Close out other state-level registrations as needed (IRP, IFTA, etc.).

If you're dissolving your business entirely, start the legal process of LLC or corporation dissolution next.

If this feels like a lot, you’re not alone. At Starcycle, we specialize in helping transportation founders shut down the right way. From deactivation to final filings, we create custom shutdown plans that keep you compliant and give you peace of mind.

Start Shutting Down Today