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March 16, 2023

MC Number Vs DOT Number – A Step By Step Guide

Do you feel confused about the difference between a DOT and an MC number if you are planning to start a transportation or logistics business?

It’s a common misconception that these numbers are the same, but they are two different numbers with different purposes and requirements. The transportation industry is heavily regulated, and it’s important to have the right information to ensure your business operates legally and efficiently. 

This blog post will unravel the mystery behind these numbers and help you understand the key differences, what you need to know, and how to obtain them. So, buckle up and prepare for a journey through MC number vs DOT number.

What is a DOT Number?

A DOT number is assigned by the Federal Motor Carrier Safety Administration (FMCSA) to motor carriers operating in interstate commerce. 

The DOT number is used to identify a specific motor carrier and is required for all commercial vehicles that weigh over 10,000 pounds. This includes trucks, buses, and other vehicles transporting goods and passengers across state lines.

What is an MC Number?

The FMCSA grants motor carriers that transport goods an MC number. Motor carriers transporting goods in interstate commerce must obtain this number, also known as a motor carrier operating authority number.

The MC number tracks and monitors a motor carrier’s compliance with federal regulations and ensures that they operate safely on the roads.

What is the Difference Between MC Number And DOT Number?

If you are still trying to decide which operating authority is appropriate for your business from the Federal Motor Carrier Safety Administration, or if you require both, let’s delve into the differences between the two. As mentioned previously, one of the significant disparities is the requirement for operations within or outside your home state. 

A USDOT number is mandatory for both interstate and intrastate commerce within the United States. However, you may only need a DOT number if your operations only occur within your state boundaries without crossing state lines. Conversely, crossing state borders for interstate operations only requires an MC number.

How Do You Know Which One You Need?

To determine which number you need for your business, you must first understand the transportation services you will offer. If you plan to transport goods, you will need an MC number and for transporting passengers, you will need a DOT number. If you plan to do both, you will need both numbers.

How Long Does It Take To Get Your Dot Number And MC Number?

Getting your DOT number and MC number can take some time, as the process involves several steps and requires the submission of various forms and documents. The exact amount of time it takes to obtain these numbers varies, but it can range from several days to several weeks.

To obtain a DOT number, you must fill out the USDOT Number application and submit it to the FMCSA. You will also need to provide information about your business, including the type of vehicles you operate and the commodities you transport. Additionally, you will need liability insurance and provide proof of insurance to the FMCSA.

Obtaining an MC number is similar but requires a few additional requirements. In addition to filling out the Application for Operating Authority, you will also need to submit proof of insurance and provide information about your business, including the types of goods you transport, the vehicles you operate, and the states you will operate in.

Conclusion

In conclusion, understanding the difference between a DOT number vs an MC number is crucial for businesses that operate in the transportation and logistics industry. The FMCSA requires both numbers and uses them to track and monitor a motor carrier’s compliance with federal regulations. 

It is important to determine which number you need for your business and to make sure that you have the correct number before you start operating. With this information, you will be well on your way to getting your DOT or MC number and operating a successful transportation business.

FAQ

What Happens If You Fail a DOT Inspection?

If the vehicle or driver is deemed unsafe, they may be placed out of service, meaning the vehicle cannot operate until all violations are properly corrected.

Who decides which level of inspection to perform?

Both the Commercial Vehicle Safety Alliance (CVSA) and the Federal Motor Carrier Safety Administration have a part in DOT inspection levels. The CVSA develops the criteria and sets the procedures for every inspection level. The FMCSA establishes overall regulations and determines which vehicles must be inspected.

How often do DOT inspections happen?

DOT inspections can happen at any time. They most commonly happen during roadside stops and weigh stations. Carriers with higher risk, poor safety records, or hazardous material may be inspected more frequently.

What documents are required during an inspection?

Documents required during an inspection include but may not be limited to:

  • State driver’s license or commercial driver’s license
  • Medical examiner’s certificate
  • Record of duty status
  • Vehicle registrations
  • Periodic inspections document for all vehicles being operated
  • Shipping papers or bills of lading
  • Information for hazardous materials being transported
  • Proof of insurance

What are common DOT inspection violations?

According to the FMCSA, the 5 most cited roadside violations are:

  1. False Report of Driver’s Record of Duty Status: log falsification providing inaccurate or intentionally altered duty-status information.
  2. No Record of Duty Status (ELD Required): using a commercial vehicle without the required electronic logging device or valid time records.
  3. Inoperable Required Lamp: crucial lights (headlights, brake lights, turn signals, etc.) are not functioning properly.
  4. Operating a Commercial Motor Vehicle Without a Commercial Driver’s License (CDL)
  5. Operating a Commercial Motor Vehicle Without Proof of a Periodic Inspection: failure to meet FMCSA the maintenance standards of a required annual inspection.

Why is updating VMT important for compliance?

VMT is tracked to determine fuel tax obligations (Vehicle Miles Traveled Tax) used for road maintenance and improvements. Trucking companies must keep accurate records of VMT to ensure they pay the correct amount of taxes.

How often should VMT be updated?

For motor carriers VMT must be updated every two years along with the MCS-150 form for the Biennial Update.

Can VMT be tracked automatically with technology?

Yes, Electronic Legging Devices (ELDs), Fleet Management Apps, and Mileage Tracking Software are all technological advancements that can simplify the process of VMT tracking.

How does VMT affect taxes and fuel reporting?

Accurate VMT records help document mileage for business-related tax deductions, ensuring compliance with IRS regulations. It also supports fuel tax reporting by tracking the miles each vehicle travels in different jurisdictions, which is essential for state and federal fuel tax calculations. Proper tracking reduces errors, prevents penalties, and provides a clear record of operational costs.

How do I know when my Biennial Update is due?

  • Your filing schedule depends on the last two digits of your USDOT number. The last digit corresponds with what month the form needs to be filed in. January is 1, February is 2, March is 3, etc. The next to last digit determines the year (odd-numbered year or even numbered year). For example, DOT number 1234567 files their biennial update in July (7) of every even year (6). Contact us today to see if you’re due.

Does the Biennial Update cost money to file?

While you can file your Biennial Update yourself for no cost through FMCSA. The process can often be confusing and time-consuming. Our team can handle your filing for you, simplifying the process for you.

Do intrastate carriers need to file the update?

Yes, even if carriers stay within state lines, a biennial update is still needed for their USDOT number.

What happens if I miss my filing deadline?

  • Failure to complete biennial update to FMCSA can be subject to fines with a maximum penalty of $10,000. If your update is past due, you can still file it to restore your compliance status. Contact us today to file your form! https://dotcompliancegroup.com/bu-update/ 

What are the new FMCSA rules in 2025?

  1. Civil Penalty Amount Increases
  2. Drug & Alcohol Clearinghouse Becomes Exclusive Source for checking driver history.
  3. ELD Technology Required
  4. SMS (Safety Measurement System) Modernization
  5. Crash Preventability Determination Program Expanded

When do the 2025 FMCSA regulations take effect?

The confirmed dates these regulations take effect is May 30, June 23, October 1, 2025.

How can trucking companies prepare for these changes?

Regularly reviewing your Safety Measurement System (SMS) scores and maintaining personal checklists for inspections, driver qualification files, and drug and alcohol testing helps catch issues before they affect audits. Partnering with DOT Compliance Group streamlines filings, reporting, and ongoing monitoring, taking the guesswork out of FMCSA regulations and keeping your operation audit-ready year-round.

What Triggers a DOT Compliance Review?

A DOT compliance review is triggered when FMCSA wants to ensure a carrier is following safety regulations. Common triggers include high SMS safety scores, a history of crashes or violations, and previous noncompliance. Staying proactive with accurate records, driver files, and regular internal audits helps reduce the likelihood of a review.

Where can I get help with FMCSA filings?

DOT Compliance Group can assist with any help or questions you may have about FMCSA filings. Call 972-476-9962.

How long are violations kept on record?

According to the Clearinghouse rules, drug and alcohol violations remain in the FMCSA Clearinghouse for five years, provided all requirements (such as completing the return‑to‑duty process) have been met before that period ends.

What if an employer makes a mistake in reporting?

In practice, correcting an employer reporting error typically involves identifying the mistake in the database and then submitting a request for correction through the Clearinghouse portal or FMCSA procedures, so the record reflects accurate information. 

What are the penalties for non-compliance?

FMCSA rules allow civil penalties for non‑compliance, and separate authorities note that employers who fail to meet Clearinghouse requirements may face civil fines or criminal penalties under federal regulations.

Do trucking companies check the Clearinghouse?

Yes — trucking companies check the Clearinghouse as part of their hiring and compliance process. The FMCSA Clearinghouse is designed so employers can search a driver’s drug and alcohol violation records before permitting them to operate a commercial vehicle. Employers are required to conduct these queries for both prospective and current drivers as part of compliance.

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