If you have a USDOT number, the FMCSA Biennial Update is one of those jobs you can’t just ignore until something breaks. It’s usually filed on Form MCS-150, and it keeps your carrier registration record current with the Federal Motor Carrier Safety Administration.
This guide is about maintaining your USDOT registration record. It’s not a guide to getting new operating authority, filing a BOC-3, or buying trucking insurance, and it doesn’t treat every carrier as if the rules are identical.
FMCSA Biennial Update FAQ: What Owner-Operators Need to Know#
The FMCSA Biennial Update is a recurring USDOT registration update that carriers generally file through Form MCS-150, even if nothing has changed. Your filing requirement depends on your registration status and operation, so check your own record before you assume you’re due or not due.
A USDOT number is the identification number FMCSA uses to track a carrier’s safety and registration record. An MCS-150 is the Motor Carrier Identification Report used to update that record.
The short answer#
If you’re an owner-operator or small fleet with an active USDOT number, this is usually a routine registration maintenance task. It’s about keeping FMCSA’s record accurate, not about turning authority on, changing your insurance, or replacing state requirements.
Who this guide is for#
This article is for carriers trying to figure out whether they’re due, how the deadline works, and the cleanest way to file. If your business changed since your last filing, review the details carefully before you submit anything.
What Is the FMCSA Biennial Update?#
The FMCSA Biennial Update is the required periodic update of your carrier identification record with FMCSA, usually made on Form MCS-150. FMCSA expects carriers to update this information on schedule even when the details on file have not changed, according to FMCSA’s MCS-150 instructions.
A Motor Carrier Identification Report is the form that reports who you are, how you operate, and basic fleet and business details tied to your USDOT record. An MC number is a separate operating authority identifier for carriers that need federal operating authority.
Why FMCSA requires registration updates#
FMCSA uses this reporting to keep its registration and safety data current. Under 49 CFR Part 390 and specifically 49 CFR §390.19, carriers have to maintain current identification information with the agency.
What information the MCS-150 confirms#
Expect to review your legal business name, DBA name, physical address, mailing address, phone and email contact details, driver count, power unit count, mileage, cargo classifications, and type of operation. If any of those changed since the last filing, update them to match your actual operation now, not what you used to do or hope to do later.
A DBA means “doing business as” and is the trade name your company uses if it’s different from the legal business name. Cargo classifications are the categories that describe what you actually haul.
What the update does not do#
A Biennial Update does not apply for a new MC number, file your BOC-3 process agent designation, or make insurance filings under 49 CFR Part 387. It also does not automatically change your operating authority status.
Don’t assume that filing MCS-150 fixes everything connected to your registration. You still need to verify each separate requirement on its own.
When to File MCS-150 Biennial Update#
Your MCS-150 Biennial Update deadline is based on the last two digits of your USDOT number. The next-to-last digit sets the month, and the last digit tells you whether you file in an odd-numbered or even-numbered year, as laid out in 49 CFR §390.19 at eCFR.
Use the last two USDOT digits to find the due date#
The next-to-last digit sets the month like this: digits 1 through 9 match January through September, and 0 means October. So if your USDOT number ends in 34, the next-to-last digit is 3, which means March.
How the filing year is determined#
The final digit sets the year type. If the last digit is odd, the filing is due in an odd-numbered calendar year. If the last digit is even, the filing is due in an even-numbered calendar year.
Here are two simple examples:
- If your USDOT number ends in 57, your filing month is May and your filing year is an odd-numbered year.
- If your USDOT number ends in 20, your filing month is February and your filing year is an even-numbered year.
Why filing early is safer than waiting#
Waiting until the deadline week creates problems fast. Account access issues, bad contact data, or confusion about cargo and operation classifications can turn a simple update into a scramble.
That matters even more if your operation changed. If you’ve added interstate work, changed cargo, or switched how you run for-hire, your registration record and your insurance may no longer line up. If you’re not sure your current operation still matches your policy,
A for-hire carrier is a carrier that transports property or passengers for compensation. Interstate means transportation that crosses state lines or is part of interstate commerce, even if one leg stays inside one state.
Can I Do My Biennial Update Online?#
Yes, eligible carriers can generally complete the FMCSA Biennial Update through FMCSA’s official online registration tools. Use FMCSA’s own systems, prepare your business details before you log in, and keep proof of submission after you file, based on FMCSA registration guidance at FMCSA.
The FMCSA Registration System is FMCSA’s official channel for carrier registration actions and updates. SAFER is FMCSA’s public system where you can review basic carrier record information at SAFER.
Prepare your information before logging in#
Have your USDOT number ready first. Then gather your legal business name, mailing and physical address, current contact details, mileage, driver count, vehicle count, cargo details, and operation classifications.
This step matters because a rushed guess is how bad data ends up on your record. If you changed address, equipment, freight type, or business structure, confirm the details before you start clicking through the update.
Complete the update through FMCSA’s registration system#
For a standard biennial identification update, many carriers can use FMCSA’s online tools. Use only official FMCSA channels, and review each field before you submit.
Don’t rely on memory if you haven’t looked at your record in a while. Check what FMCSA already shows for your carrier, then correct what’s outdated instead of repeating old errors.
Use the paper MCS-150 option when online filing is unavailable#
Some carriers hit login or access problems, and some registration changes don’t fit a simple online update path. In those cases, FMCSA may require a different filing route, including using the paper MCS-150 form and instructions.
That doesn’t mean you should jump to a paid service automatically. First confirm what kind of change you’re actually making and whether it’s just a biennial identification update or something broader.
Save confirmation after submission#
After you file, save the confirmation page or any submission proof you receive. Then recheck your carrier record after processing to make sure the update posted correctly.
If the update reflects a major business change, that’s also a good time to review whether your trucking coverage still matches how you operate now. Registration and insurance are separate, but they should describe the same real-world operation.
How Much Does It Cost to Update USDOT Biennial?#
FMCSA does not charge a filing fee for the required MCS-150 Biennial Update. If you pay someone to help you file, that’s a separate service charge from a third party, not an FMCSA fee.
FMCSA’s filing fee#
For the biennial MCS-150 update itself, the key point is simple: FMCSA does not charge a fee to submit the required update. That’s different from assuming every registration-related task is free.
Avoid unnecessary third-party filing charges#
Some companies charge to file the form for you or to help with access and paperwork. That may be useful in some situations, but make sure you know exactly what they’re filing before you pay or share account access.
Know when a different registration change may have separate requirements#
A no-fee biennial update is not the same as applying for authority, hiring a compliance service, or handling other registration changes. Those can involve different steps, support fees, or separate federal and state requirements.
Avoid These MCS-150 Update Mistakes#
Most MCS-150 mistakes come from treating the update like a formality instead of a real record check. Use current business details, keep registration separate from insurance filings, and confirm the update actually posted after submission.
Do not confuse registration updates with insurance filings#
An MCS-150 update does not replace required insurance filings for carriers subject to FMCSA financial responsibility rules under 49 CFR Part 387. Updating your USDOT record doesn’t by itself activate authority or prove your insurance is set up correctly.
Do not report outdated operational details#
Don’t reuse old mileage, driver counts, vehicle counts, cargo classes, or addresses just because they were on the last filing. Your operation classifications should match what you actually do now, not a generic category that felt close enough.
If you report general freight but you’re now hauling something else, or you mark a for-hire operation differently than how you really run, that mismatch can create trouble later.
Do not miss the confirmation step#
Always save proof that you filed. Then check your updated record through official FMCSA channels to make sure the change processed the way you intended.
What to do after you file#
Keep your confirmation with your compliance records. If you notice an error after filing, correct it through the appropriate FMCSA process instead of assuming it will sort itself out.
If you’re adding interstate for-hire work, changing cargo, or updating equipment, it’s smart to review whether your coverage still fits your actual operation. LogRock specializes in trucking insurance for owner-operators and small fleets. If you’re not sure what coverage fits your operation,
FAQ#
Can I do my biennial update online?
Yes, eligible carriers can generally complete the biennial update through FMCSA’s official online registration tools. Before you start, gather your USDOT number, legal business details, addresses, contact information, mileage, power unit and driver counts, cargo classifications, and operation type. Use only official FMCSA systems, not random third-party sites that look similar. If your issue goes beyond a standard identification update or you can’t access the online system, FMCSA may direct you to another filing path, including paper forms. Save your confirmation when you’re done and recheck your record after processing.
What is the FMCSA biennial update?
The FMCSA biennial update is the recurring update of your carrier identification record with FMCSA, usually filed on Form MCS-150. It tells FMCSA who the carrier is and how the business currently operates, including contact details, fleet size, mileage, cargo, and operation type. In many cases, carriers still need to file on their schedule even if nothing has changed. It is not the same thing as applying for an MC number, maintaining operating authority, filing a BOC-3, or making insurance filings. Think of it as USDOT record maintenance, not a catch-all compliance renewal.
How much does it cost to update USDOT biennial?
FMCSA does not charge a fee for the required MCS-150 Biennial Update. If someone offers to complete it for you and charges a fee, that charge is for their assistance, not for FMCSA’s filing itself. That’s why it helps to read carefully before paying any service. Ask what exact filing they’re making, whether they’re using official FMCSA channels, and whether they need access to your registration account. A paid helper may be useful in some situations, but the required biennial update itself is not an FMCSA fee-based filing.
When to file mcs-150 biennial update?
Your filing deadline is based on the last two digits of your USDOT number. The next-to-last digit sets the month: 1 through 9 mean January through September, and 0 means October. The last digit sets the year type: odd means an odd-numbered calendar year, and even means an even-numbered calendar year. For example, a USDOT ending in 57 would be due in May of an odd-numbered year. A USDOT ending in 20 would be due in February of an even-numbered year. Filing early helps if you run into access or data issues.
Do I need to file an MCS-150 update if nothing has changed?
In general, yes. The biennial update requirement is about keeping the carrier identification record current on FMCSA’s schedule, not only about reporting changes when they happen. That means many carriers still have to file the MCS-150 on their assigned biennial deadline even when the business details remain the same. It’s easy to assume no change means no filing, but that’s a common mistake. Review your registration status, verify your due date, and submit the update through the proper FMCSA channel so your record stays current.
Does an MCS-150 Biennial Update renew my MC authority?
No. An MCS-150 Biennial Update updates your USDOT registration record, but it does not renew or replace your MC operating authority requirements. Those are separate compliance items with different purposes. The MCS-150 handles carrier identification details like contact information, operation type, mileage, and equipment counts. Authority status, BOC-3 process agent filings, and required insurance filings must still be handled separately where they apply. Don’t assume one update covers all federal registration duties. Verify each item on its own so you don’t mistake a completed MCS-150 for full authority maintenance.
What happens if I miss my FMCSA Biennial Update deadline?
Missing the biennial update deadline can create compliance problems because FMCSA expects carriers to keep their identification record current under the required filing schedule. If you realize you’re overdue, the practical move is to submit the required update promptly through the appropriate official FMCSA channel rather than waiting longer. Then save the confirmation and monitor your record to make sure the filing posts correctly. If your business details changed while you were overdue, use current information, not stale data from the last filing. Late filing is a problem, but filing bad information creates another one.
