FMCSA MCS-150 FORM
MCS-150 Filing Service & DOT Biennial Updates
Same-Day Filing · Biennial Reminders · DOT-Compliant · No Rejections
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What Is the MCS-150 Form?
The MCS-150 is the FMCSA’s Motor Carrier Identification Report. Every trucking company with a USDOT number must file an MCS-150 every two years to keep its DOT number active. This is called the biennial update, and missing it puts your operating authority at risk.
An MCS-150 filing service handles the form for you, confirms your information matches FMCSA records, and submits it directly to the federal portal the same day. The form covers your company name, address, mileage, vehicle count, driver count, and operation type.
What Information Is on the MCS-150 Form?
The MCS-150 is a 10-section Motor Carrier Identification Report. Understanding what each section asks for helps you gather the right information before filing and explains why errors in specific fields cause rejections.
USDOT Number
Your existing USDOT number. This links the update to your active carrier record. An incorrect or mistyped USDOT number causes the filing to be rejected or applied to the wrong carrier record.
Reason for Filing
You mark whether this is an initial filing, a biennial update, or an update due to changes in company information. Selecting the wrong reason code can cause processing delays.
Legal Business Name and DBA
Your legal entity name exactly as it appears in your state registration and on your Business Tax Assistance. The FMCSA cross-references this against your existing record. Name mismatches between the MCS-150 and the FMCSA record are one of the top rejection causes.
Principal Address
Your current business address including street, city, state, and ZIP. This must match the address on file with your state registration. P.O. boxes are not accepted as principal addresses.
Mileage (Most Common Error Field)
Total miles operated during the most recently completed calendar year. This is the most commonly misreported field on the MCS-150 and the one most likely to trigger an audit flag or rejection. The FMCSA compares your reported mileage against previous filings and against national averages for operations of your type. Reporting zero miles when your record shows active operations, or reporting implausibly high mileage, flags the filing for review. We coach every client on the correct way to report mileage before submission.
Driver Information
Total number of drivers, including CDL holders and non-CDL drivers. This count feeds into FMCSA safety statistics and is reviewed during compliance audits.
Carrier Operation
Whether you are an interstate or intrastate carrier, what type of commodities you haul (general freight, household goods, liquids/gases, hazmat, etc.), and whether you haul for hire or private use. Misclassifying your operation type here can affect your insurance requirements and authority type on FMCSA records.
Vehicle Information
Number and type of vehicles operated: straight trucks, truck tractors, trailers, semi-trailers, buses, and hazmat vehicles. Vehicle counts are used to determine your UCR fee bracket and are compared against your insurance filings. Mismatched vehicle counts between the MCS-150 and your insurance record can trigger an audit flag.
Cargo Type
General description of the cargo you haul. Select all categories that apply to your operation. Carriers who haul hazmat but do not check the hazmat box on the MCS-150 create a compliance record inconsistency.
Signature and Certification
Signed by the carrier or authorized representative. The signature certifies the accuracy of all information in the filing. Incorrect information that is later discovered can result in penalties beyond the original filing issue.
How to Find Your MCS-150 Biennial Due Date
Every carrier's biennial update schedule is based on the last two digits of their USDOT number. The FMCSA assigns filing months based on this system so that carrier updates are spread across the year rather than all arriving at once. Here is how to find your specific due date.
Use the FMCSA USDOT Number Schedule
Go to the FMCSA website and search for the MCS-150 biennial update schedule. The published schedule shows which months correspond to which USDOT number endings. For example, DOT numbers ending in 00 and 01 may file in January, numbers ending in 02 and 03 in February, and so on through December. Once you find the month assigned to your DOT number, your filing is due by the last day of that month in your biennial year.
Check Your FMCSA Carrier Record
Log into your FMCSA account at portal.fmcsa.dot.gov. Your carrier record shows the date of your last MCS-150 filing. Add 24 months to that date to calculate your next due date. If your last MCS-150 was filed in March 2024, your next filing is due by the end of March 2026.
Call or Email Start 4 Truckers
Provide us your USDOT number and we look up your specific due date within minutes. We also enroll you in our biennial reminder system so you receive alerts 30, 14, and 7 days before your deadline. You focus on driving we make sure you never miss the update.
USDOT Last 2 Digits | Filing Month | Example Due Date (2026) |
00 and 01 | January | January 31, 2026 |
02 and 03 | February | February 28, 2026 |
04 and 05 | March | March 31, 2026 |
06 and 07 | April | April 30, 2026 |
08 and 09 | May | May 31, 2026 |
10 and 11 | June | June 30, 2026 |
12 and 13 | July | July 31, 2026 |
14 and 15 | August | August 31, 2026 |
16 and 17 | September | September 30, 2026 |
18 and 19 | October | October 31, 2026 |
20 and 21 | November | November 30, 2026 |
22 and 23 | December | December 31, 2026 |
Note | Numbers 24-99 follow the same pattern cycling through the months above | Contact us for your specific month |
Your biennial filing is due by the last day of your assigned month, every two years. Filing early is allowed and encouraged. Filing late even one day past your due date begins the FMCSA’s deactivation process for your USDOT number.
Top MCS-150 Rejection Reasons and How to Avoid Them
Self-filed MCS-150 updates are rejected or flagged for review more often than most carriers expect. These are the four rejection reasons we see most frequently, and every one of them is avoidable when the filing is prepared correctly.
Annual Mileage Reporting Error
Annual mileage is the single most common rejection point on the MCS-150. The FMCSA compares your reported mileage against your previous filings, your operation type, and your vehicle count. Common errors include reporting the current partial year instead of the prior full calendar year, reporting zero miles when the carrier was clearly operating, and reporting estimated or rounded numbers that fall outs The correct approach: report actual miles driven in the most recently completed calendar year. If you are filing in March 2026, you report the total miles driven in calendar year 2025, not 2026 year-to-date. Mileage should come from your ELD, IFTA records, or trip logs not from memory.
Business Name Mismatch
The legal name on the MCS-150 must match your FMCSA carrier record exactly. Carriers who have changed their legal business name through an LLC name amendment, a DBA addition, or a state registration change without updating the FMCSA first will have their MCS-150 rejected because the name does not match the existing record. If you have changed your business name, update your FMCSA record through a separate amendment filing before submitting the MCS-150 update. We can identify whether your current name matches your FMCSA record before we file.
Address Outside the US
Carriers with Canadian or foreign addresses sometimes enter their foreign address as the principal place of business on the MCS-150. The FMCSA requires a US business address on the MCS-150 for US DOT registrations. Foreign-based carriers operating in the US must have a US process address on file.
Operation Type Inconsistency
Carriers who have changed what they haul for example, adding hazmat commodities to a general freight operation without updating the cargo type on the MCS-150 create a record inconsistency. If your FMCSA record shows non-hazmat but you begin hauling hazmat, the MCS-150 update must reflect the change. Mismatches between your insurance filings and your MCS-150 cargo type also trigger review.
When to File an Out-of-Cycle MCS-150 Update
Your biennial update is not the only time you need to file an MCS-150. Federal rules require carriers to file an updated MCS-150 whenever certain information about the business changes, regardless of where you are in the biennial cycle.
Changes That Require an Immediate MCS-150 Update
- Change to your legal business name or DBA
- Change to your principal business address
- Change to your mailing address if different from principal address
- Significant change in fleet size specifically when adding or removing vehicle types
- Change in operation type for example, adding hazmat to a non-hazmat operation
- Ceasing operations you must file to deactivate the DOT number if you stop operating permanently
Out-of-cycle updates do not reset your biennial clock. You still file your biennial update in the assigned month, even if you filed an out-of-cycle update six months earlier. The two obligations are independent.
Many carriers skip out-of-cycle updates because they do not know they are required. The problem shows up during audits when the FMCSA record shows outdated information that does not match what the inspector finds at the carrier's facility. Keeping the MCS-150 current year-round is part of basic compliance hygiene.
Who Needs to File an MCS-150?
Every active USDOT-registered carrier files MCS-150. The two situations that trigger it most often are these.
New Trucking Companies
An initial MCS-150 form is filed as part of your USDOT registration. This creates your baseline carrier record with the FMCSA and starts your biennial update clock.
Biennial Update Cycle
Every active carrier files a DOT biennial update every two years. The schedule is based on your USDOT number's last two digits. Missing it deactivates your authority.
Information Changes
Any change to your business name, address, fleet size, or operation type also triggers an MCS-150 update outside the regular two-year cycle.
Information Changes
Any change to your business name, address, fleet size, or operation type triggers an out-of-cycle MCS-150 update. These must be filed promptly not held until the next biennial.
What Happens If You Miss the Biennial Update
Failing to file your MCS-150 on schedule causes the FMCSA to deactivate your USDOT number. Once deactivated, brokers and shippers cannot tender loads to you, your insurance may lapse, and reactivating requires filing the update plus correcting any associated compliance issues.
DOT Deactivation
FMCSA marks your USDOT number inactive. Load boards and broker carrier-vetting tools immediately filter you out. Your FMCSA record becomes visible to shippers and brokers as non-compliant.
Insurance Issues
Many commercial trucking insurance policies require an active DOT number. A deactivated number can trigger policy cancellation or a premium surcharge at renewal.
Reactivation Delays
Reinstating a deactivated DOT number takes longer than filing on time. You file the missed MCS-150 plus wait for FMCSA processing, which can take several business days. Every day you are inactive, you are not hauling.
MCS-150 vs. Other Recurring DOT Filings
The MCS-150 is one of several recurring compliance filings every carrier manages. Understanding how they overlap helps you stay compliant year-round.
| Filing | Frequency | Trigger | Consequence If Missed |
|---|---|---|---|
| MCS-150 | Every 2 years | Schedule based on last 2 digits of DOT number | USDOT number deactivation |
| UCR | Annual (by Dec 31) | Calendar year renewal | Roadside fines, out-of-service |
| IFTA Return | Quarterly (4x per year) | End of each quarter | Penalties, audit trigger, license revocation |
| IFTA License Renewal | Annual (by Dec 31) | Calendar year renewal | Decals expire Jan 1, citations at scales |
| BOC-3 Update | When info changes | Name or address change | MC authority at risk |
| Drug Consortium | Ongoing | New drivers, annual queries | DOT audit violations, authority risk |
MCS-150
Biennial DOT update. Required every 2 years on a schedule based on your DOT number.
UCR
Annual unified carrier registration. Due by December 31 every year. Tied to fleet size.
IFTA Renewal
Annual fuel tax license renewal. Due by December 31. Quarterly returns required throughout the year.
BOC-3 Refile
Triggered by name or address changes. Not on a fixed schedule, but tied to MCS-150 changes.
How Our MCS-150 Filing Process Works
We file MCS-150 forms directly through the FMCSA portal the same business day. Most updates are confirmed in the FMCSA system within hours.
Submit Your Info
Provide your DOT number, current company info, fleet count, and annual mileage. About 5 minutes. We ask the specific questions about mileage reporting that catch the most common errors before submission.
We Verify Details
Our team checks every field against FMCSA records to prevent rejections that can take weeks to resolve. We confirm your business name matches the FMCSA record, your address is current, and your mileage is reported for the correct calendar year.
Direct FMCSA Filing
We submit your MCS-150 update to the FMCSA portal the same business day, with you copied on confirmation.
Update Confirmed
Your DOT record is updated and your biennial clock reset. We send you proof of filing for your records and update your next due date in our reminder system.
MCS-150 Biennial Updates Now Process Through the Motus System
The MCS-150 biennial update requirement has not changed. Every motor carrier must still file it every two years to keep their USDOT number active. What changed in 2026 is that these updates now run through Motus, the FMCSA's new registration platform replacing the old URS and MCMIS systems. If your MCS-150 is due and you log into the old FMCSA portal expecting the familiar interface, you will find yourself redirected to Motus. Start 4 Truckers files your MCS-150 update through Motus accurately so your USDOT number stays active and your compliance record stays clean.
Why choose Start 4 Truckers for MCS-150?
MCS-150 errors can deactivate your DOT number for weeks. We file thousands of these every year and know the rejection codes before they happen.
Same-Day Filing
Most MCS-150 updates are filed with the FMCSA the same business day you submit your information.
Rejection-Proof
We pre-check every field against FMCSA records. The errors that delay self-filers do not happen here.
Biennial Reminders
We track your DOT number's biennial date and remind you 30, 14, and 7 days before the deadline.
Mileage Coaching
Annual mileage reporting is the most-rejected MCS-150 field. We coach you on the right way to report.
Confirmation Records
You receive a copy of the filed MCS-150 and FMCSA confirmation for your records.
Live Support
Real humans answer your calls at (210) 588-9348 for every MCS-150 question.
Frequently asked questions
Your biennial MCS-150 schedule is determined by the last two digits of your USDOT number. The FMCSA publishes a chart matching the last two digits to specific months. Start 4 Truckers tracks your due date for you and sends reminders before the deadline.
Submission takes about 5 minutes through Start 4 Truckers. We file the same business day, and the FMCSA portal typically confirms the update within hours. Self-filers often face delays from incorrect mileage reporting or address mismatches.
The FMCSA charges no fee for an MCS-150 filing. Start 4 Truckers charges a flat service fee for filing the form correctly, monitoring its status, and sending you the FMCSA confirmation. Pricing is the same whether it is your first filing or a biennial update.
If you intend to keep the DOT number active, yes. If you are permanently shutting down, you should file Form MCS-150 marking the operation as ceased to deactivate the DOT number cleanly. We can handle either path.
You need your USDOT number, current company name and address, fleet size, total drivers, types of vehicles, total miles driven in the previous calendar year, and operation type (interstate, intrastate, hazmat). We collect everything in one short form.
Yes, the FMCSA portal allows self-filing for free. The most common reason carriers use a DOT number update service is to avoid the rejection issues that delay self-filers, especially around mileage reporting and address mismatches. We file thousands of these per year.
Yes. The MCS-150 filing requirement is unchanged. You must still update your carrier information every two years or your USDOT number risks deactivation. Motus is simply the new system the filing goes through. Missing your biennial update has the same consequences it always did, including USDOT deactivation and potential authority issues. Start 4 Truckers tracks your filing schedule and handles the update for you through Motus before the deadline hits.
Check the FMCSA biennial update schedule using the last two digits of your USDOT number. Alternatively, log into your FMCSA carrier account and look at the date of your last MCS-150 filing your next filing is due 24 months later. Or call us at (210) 588-9348 with your DOT number and we confirm your due date within minutes.
The MCS-150 covers your USDOT number, legal business name, principal address, annual mileage for the prior calendar year, carrier operation type, vehicle counts by type, driver count, and cargo categories. Annual mileage is the most commonly misreported field and the one most likely to cause a filing rejection or audit flag.
File an out-of-cycle MCS-150 update immediately when your legal business name or principal address changes. You do not wait for the next biennial cycle. Out-of-cycle updates do not reset your biennial clock you still file the regular biennial update in your assigned month. We handle both out-of-cycle changes and regular biennial filings.