How to Get a DOT Number for Your Trucking Company: Step-by-Step 2026 Guide

Your DOT number is the federal identifier that follows your trucking company for as long as you operate. Every roadside inspection, every FMCSA audit, every safety rating — all of it is tied to that number. Getting it is straightforward. Understanding what it requires from your operation going forward is what separates carriers who build clean records from those who accumulate violations.

Who Is Required to Have a DOT Number

The requirement to register and obtain a USDOT number applies to commercial motor vehicles operated in interstate commerce that meet any of the following criteria:

• GVWR, GCWR, GVW, or GCW of 10,001 pounds or more
• Designed or used to transport more than 8 passengers (including driver) for compensation
• Designed or used to transport more than 15 passengers (including driver) not for compensation
• Used to transport hazardous materials in quantities requiring placarding under 49 CFR Part 172

What You Need Before You Apply

Before starting the application, have the following ready: legal business name (must match formation documents exactly), business physical address (P.O. Box not acceptable), EIN, business entity type, state of incorporation, operation type, cargo type, vehicle information, and whether you transport hazardous materials or operate as for-hire.

Step-by-Step: The FMCSA Registration Process

Step 1: Create Your FMCSA Portal Account

Navigate to portal.fmcsa.dot.gov and create a login account. This account will be tied to your company's DOT registration — keep the credentials secured and accessible.

Step 2: Start a New Registration (MCS-150 Filing)

The MCS-150 is the Motor Carrier Identification Report. Select 'Register New USDOT Number' and complete the online form. The process takes approximately 20-30 minutes if your information is ready. Don't rush through the operation type and cargo sections — misclassifying creates compliance problems downstream.

Step 3: Receive Your USDOT Number

Upon submission of an accurate MCS-150, the FMCSA system will issue your USDOT number immediately. The USDOT number must be displayed on both sides of every commercial motor vehicle, preceded by 'USDOT' and followed by your company name — violations range from $1,000 to $10,000 per unmarked vehicle.

Step 4: Determine If You Need Operating Authority (MC Number)

If you are a for-hire carrier — hauling goods that belong to other parties in exchange for compensation — you need an MC number in addition to your DOT number. Private carriers do not need an MC number but still need the DOT number.

Step 5: File Your BOC-3

If applying for MC authority, you must designate a process agent in every state through a Form BOC-3. You must use a registered process agent company — this cannot be self-filed. Typical cost: $20-$40. Do not operate under authority before your BOC-3 is on file.

Step 6: File Your Insurance

Your insurance carrier must file evidence of insurance with FMCSA using Form MCS-90. FMCSA must receive and process the filing before your authority becomes active. Work with a trucking-specific insurance broker who understands MCS-90 filings and FMCSA filing timelines.

Post-Registration Obligations That Begin Immediately

• Biennial MCS-150 Update: required every 24 months — failure results in deactivated DOT number
• New Entrant Safety Audit: scheduled within 18 months of receiving authority
• Drug and Alcohol Testing Program: must be in place before dispatching any CDL driver
• Unified Carrier Registration (UCR): annual registration required

Common Mistakes That Create Immediate Compliance Exposure

• Operating before insurance is active — a federal violation
• Inaccurate MCS-150 filings that surface during audits
• Not displaying USDOT number correctly on all vehicles
• Missing biennial MCS-150 updates leading to deactivated authority