How to Complete Your Biennial DOT Number Renewal

The biennial DOT number renewal is a free update every USDOT-registered carrier must file with the Federal Motor Carrier Safety Administration every two years, using Form MCS-150. You file it even if nothing has changed, even if you’ve stopped operating, and even if you never received a reminder. Miss the deadline and FMCSA can deactivate your USDOT number and assess civil penalties up to $1,584 per day, capped at $15,846.¹

When Your Update Is Due

Your deadline is encoded in your USDOT number itself.²

The last digit gives you the month. 1 is January, 2 is February, on through 9 for September. A 0 means October.
The next-to-last digit gives you the year. Odd means you file in odd-numbered years (2025, 2027). Even means even-numbered years (2026, 2028).

A USDOT number ending in 54 is due by the last day of April in even years. One ending in 31 is due by the last day of January in odd years. This filing is required even if your company information hasn’t changed, you’ve halted interstate operations, or you’ve gone out of business without telling FMCSA.³

What to Have Ready Before You File

The form is the Motor Carrier Identification Report, MCS-150. Before you start, pull together your legal business name, any DBA name, the physical address where your safety records are kept, your mailing address, phone, and email. You’ll need your Employer Identification Number. Sole proprietors without an EIN may use a Social Security number, though FMCSA encourages getting an EIN.⁴

On the operations side, be ready to report your carrier type, cargo classifications, number of commercial motor vehicles broken out by owned, term-leased, and trip-leased, total driver count including part-time and leased drivers, and vehicle miles traveled over the past 12 months. The mileage number matters beyond the form itself: it feeds directly into your Safety Measurement System scores.⁴

If You Hold a Hazmat Safety Permit

Hazardous materials safety permit holders file Form MCS-150B instead. It combines the identification report with the HM permit application. Hazmat carriers also must be registered with PHMSA and must report any changes to their MCS-150B information within 30 days, not just at the biennial cycle.⁵

Filing Online Through the FMCSA Portal

FMCSA recommends filing online, and the primary route is the FMCSA Portal at portal.fmcsa.dot.gov. To use it you need a Login.gov account and your USDOT PIN. The company official listed on your USDOT record uses the PIN one time to link Login.gov to the portal; after that the PIN isn’t needed for routine access.⁶

One detail causes most first-time login failures: the email on your Login.gov account has to match the email in your FMCSA Portal profile exactly. Set up Login.gov at secure.login.gov first, then sign in through the FMCSA Portal login page.⁷

Getting Your PIN

Request a USDOT PIN through the SAFER website at safer.fmcsa.dot.gov. FMCSA can email or text the PIN, or mail it to the address on file. Mail delivery takes 7 to 10 business days, so choose electronic delivery if you’re close to your deadline. For PIN problems, FMCSA technical support is at 1-800-832-5660.

Uploading Instead

If the portal doesn’t work for you, download the MCS-150 from fmcsa.dot.gov, complete it, and upload it through the Ask FMCSA ticketing system at ask.fmcsa.dot.gov. You’ll get a confirmation number by email.³

Filing by Mail

If you can’t file electronically, mail the completed MCS-150 to:

Federal Motor Carrier Safety Administration
Attention: USDOT Number Application
1200 New Jersey Avenue SE, Room W65-206
Washington, DC 20590⁴

Paper takes longer, potentially eight or more business days for review. Only use the current form downloaded from fmcsa.dot.gov. Expired versions are rejected.⁸

After You Submit

Portal submissions often process the same day. Save your submitted form and any confirmation number. Mailed submissions need at least eight business days before checking status.

Your updated fleet size and mileage won’t appear in the Safety Measurement System right away. SMS refreshes monthly, so new data shows up at the next cycle.⁹ To confirm your USDOT number status at any time, use the Company Snapshot tool on the SAFER website, searchable by USDOT number, MC/MX number, or company name.¹⁰ If something looks wrong, call FMCSA at 1-800-832-5660 (Monday through Friday, 8 AM to 8 PM Eastern) or open a ticket at ask.fmcsa.dot.gov.

What Happens If You Miss the Deadline

Two things follow a missed biennial update. FMCSA can deactivate your USDOT number, which cuts off your authorization to operate.¹¹ And civil penalties accrue at up to $1,584 per day the violation continues, up to $15,846.¹ For-hire carriers of passengers and freight, freight forwarders, and brokers may face additional penalties under separate statutory authority. The amounts are adjusted periodically for inflation.

Reactivating a Deactivated USDOT Number

If your number has already been deactivated for a missed update, the fix is filing the MCS-150. FMCSA reactivates your number once the filing is processed. Check current status on the Company Snapshot tool before you file, and download the form directly from fmcsa.dot.gov because third-party copies may be outdated and expired versions are rejected.⁸

If your deactivation came from a New Entrant Safety Audit revocation rather than a missed biennial update, the reinstatement process is different and you should contact FMCSA directly.⁸ And if you also need to reinstate operating authority (an MC or FF number), that’s a separate application with its own fee; online reinstatement is typically active within a week of receipt.¹²

If You’ve Stopped Operating

Closing the business doesn’t cancel the biennial update. Stop interstate operations without notifying FMCSA and you still owe the update, and you’re still exposed to penalties for missing it.³ The cleaner move is to ask FMCSA to deactivate your USDOT number, either through the FMCSA Portal or by calling 1-800-832-5660. Once it’s formally deactivated at your request, the biennial obligation ends with it.

How to Spot Renewal Scams

Every renewal cycle brings mailers, emails, and calls from companies impersonating government agencies. They charge fees, commonly around $149, for a filing FMCSA does for free.³ Some use official-sounding names like “FMCSA Compliance Processing Group” and threaten daily fines or out-of-service orders to force a quick payment.

FMCSA has stated it never initiates contact asking for immediate payment or sensitive information, never uses telemarketers or robocalls, and never asks for credit card numbers over the phone. All FMCSA forms are free on the official website.¹³ If someone demands payment to process your biennial update, it isn’t the government. File directly through fmcsa.dot.gov or the FMCSA Portal.

1
Federal Register. Civil Penalties Schedule Update
2
Federal Motor Carrier Safety Administration. When Am I Required to File a Biennial Update
3
Federal Motor Carrier Safety Administration. Updating Your Registration or Authority
4
Federal Motor Carrier Safety Administration. FMCSA Form MCS-150 Instructions – Motor Carrier Identification Report
5
eCFR. 49 CFR 385.405T – Application for Safety Permit
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Federal Motor Carrier Safety Administration. FMCSA Portal Registration User Guide
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Federal Motor Carrier Safety Administration. How To Create Your Login.gov Account
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Federal Motor Carrier Safety Administration. How Do I Reactivate My USDOT Number
9
CSA – Compliance, Safety, Accountability. Attention Commercial Motor Carriers: Update Your VMT and PU Data Now
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Federal Motor Carrier Safety Administration. SAFER Web – Company Snapshot
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Federal Motor Carrier Safety Administration. What Are the Penalties for Failure to Submit My Biennial Update
12
Federal Motor Carrier Safety Administration. How Do I Reinstate My Operating Authority MC/FF/MX Number
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Federal Motor Carrier Safety Administration. Alert Recent Phishing Scheme Targets Motor Carriers