How to Get a USDOT Number — Complete Guide

A USDOT number is the foundational identifier for every commercial motor vehicle operator in the United States. It is your registration with the Federal Motor Carrier Safety Administration and is used to track your company's safety record, inspections, compliance reviews, and crash history. Getting one is free, takes about 20 minutes online, and is required before you can apply for operating authority (MC number) or legally operate CMVs in interstate commerce.

Who Needs a USDOT Number?

You need a USDOT number if your commercial vehicles meet any of these criteria:

• Travel in interstate commerce (across state lines) and have a gross vehicle weight rating (GVWR) of 10,001 lbs or more
• Transport hazardous materials in quantities requiring placards, regardless of vehicle size
• Transport 9 or more passengers (including the driver) for compensation
• Transport 16 or more passengers (including the driver) regardless of compensation

Some states also require USDOT numbers for intrastate-only operations. Check your state's requirements — many states have adopted the federal USDOT number for intrastate carriers.

Who Is Exempt?

• Vehicles with a GVWR under 10,001 lbs that do not carry hazmat or passengers (in most states)
• Federal government vehicles
• Vehicles used exclusively for personal transportation

USDOT Number vs MC Number

The USDOT number and MC number serve different purposes:

• USDOT number — Identifies your company and tracks your safety data. Required for all CMV operators in interstate commerce. Free to obtain.
• MC number — Grants operating authority to transport freight for hire in interstate commerce. Required for for-hire carriers and brokers. Costs $300.

If you are a private carrier (hauling your own goods), you need a USDOT number but not an MC number. If you are a for-hire carrier, you need both.

Step-by-Step Registration Process

Step 1: Gather Required Information

Before you begin, have the following ready:

• Legal business name and DBA (doing business as) if applicable
• Employer Identification Number (EIN) from the IRS — or your Social Security Number if you are a sole proprietor
• Business entity type — sole proprietorship, partnership, LLC, or corporation
• Business address and mailing address
• Type of operation — interstate, intrastate (hazmat), intrastate (non-hazmat)
• Operation classification — authorized for hire, exempt for hire, private (property), private (passengers)
• Cargo types you will transport (general freight, household goods, metal, produce, refrigerated, hazmat, etc.)
• Number of vehicles by type (straight trucks, tractors, trailers, hazmat vehicles)
• Number of drivers employed
• Insurance information — your insurance company name and policy number (you will need to file proof of insurance separately for MC authority)

Step 2: Apply Online

Go to the FMCSA Unified Registration System at portal.fmcsa.dot.gov:

1. Create an account (or log in if you already have one)
2. Select "Register New Company"
3. Fill in all required fields using the information gathered above
4. Select your operation type and cargo classifications
5. Review your application for accuracy
6. Submit — there is no fee for a USDOT number

Step 3: Receive Your USDOT Number

Your USDOT number is typically issued immediately or within a few business days. You can check the status by searching the FMCSA SAFER system (safer.fmcsa.dot.gov).

Once issued, you must display your USDOT number on both sides of each CMV you operate, along with your legal or DBA name. The lettering must be legible and in a contrasting color to the vehicle body, readable from at least 50 feet during daylight.

Step 4: Complete Additional Requirements

Having a USDOT number alone does not authorize you to start hauling freight for hire. You still need:

• MC authority — if you are a for-hire carrier or broker (how to apply)
• Insurance filings — BMC-91 or BMC-91X filed by your insurance provider
• BOC-3 — process agent designation in every state
• State registrations — UCR, IFTA, IRP as applicable
• Drug and alcohol testing program — established before your first driver operates

Biennial Update Requirement

Every USDOT-registered carrier must update their registration information every two years (biennially). The update is due based on the last two digits of your USDOT number:

FMCSA sends reminders, but it is your responsibility to update on time. Failing to complete the biennial update can result in deactivation of your USDOT number and loss of operating authority.

The biennial update is free and done through the same FMCSA URS portal. Update your address, fleet size, driver count, cargo types, and any other changes.

New Entrant Safety Audit

Once you receive your USDOT number and begin operations, you are placed in the New Entrant Safety Assurance Program. FMCSA will schedule a safety audit within the first 18 months of your operating authority. Make sure you have your compliance systems in place from day one — the audit is pass/fail, and failing means losing your authority.

Canadian Carriers Needing a US USDOT Number

Canadian carriers that operate in the United States must obtain a US USDOT number. The process is the same as for US-based carriers, with a few additional considerations:

• You will need an EIN (you can apply as a foreign entity with the IRS using Form SS-4)
• Your US USDOT number is separate from any Canadian operating authority (Safety Fitness Certificate, CVOR, etc.)
• You must comply with all FMCSA regulations when operating in the US, including drug and alcohol testing and Clearinghouse requirements
• Cross-border insurance coverage must be confirmed with your insurance provider

Many Canadian carriers use a US-based agent or attorney to assist with the registration process, though it can be completed independently through the online portal.

Key Takeaways

Getting a USDOT number is free, fast, and straightforward. It is the first step in establishing your trucking company legally. Register online through the FMCSA portal, gather your business and vehicle information beforehand, and complete the process in under 30 minutes. Remember that the USDOT number alone does not authorize for-hire operations — you also need MC authority, insurance, and a BOC-3 filing.

Mark your biennial update date on the calendar and complete it on time. A deactivated USDOT number stops your operation cold.