How to Get Your MC Number and USDOT Number: Step-by-Step

To operate as an auto transport carrier in the United States, you need two federal registrations: a USDOT number from the Federal Motor Carrier Safety Administration (FMCSA) and an MC number (Motor Carrier number) if you haul regulated commodities across state lines for hire. The USDOT number identifies your company in federal safety records. The MC number is your operating authority — it says the federal government has reviewed your insurance and you are legally permitted to move freight commercially. Without both, you cannot legally dispatch loads from Central Dispatch or Super Dispatch, and brokers will reject your carrier packets outright.

The entire process runs through the FMCSA's online portal, costs $300 for the MC number application (USDOT registration is free), and takes roughly 20–25 business days from submission to active operating authority. This guide walks through each step in order so you do not miss anything that could delay your activation.

Do You Need Both a USDOT Number and an MC Number?

Almost all auto transport carriers need both. Here is the quick breakdown:

Private carriers hauling only their own vehicles do not need an MC number, but virtually every for-hire auto hauler does. If you plan to move vehicles for dealers, auctions, or individual customers across state lines, you need MC authority. Some states also require intrastate authority for carriers operating only within their borders — check your state's Department of Transportation website for state-specific requirements.

Step 1: Create a Unified Registration System (URS) Account

All FMCSA registrations go through the Unified Registration System at portal.fmcsa.dot.gov. Before you start, gather the following:

• Legal business name exactly as registered with your state (LLC, Corp, or Sole Proprietor)
• Federal Employer Identification Number (EIN) — or Social Security Number if sole proprietor
• Principal business address (must be a physical address, not a P.O. Box)
• DUNS number if your business has one (optional but speeds up verification)
• Names and addresses of all company officers or owners
• Contact email and phone number you check regularly — FMCSA sends time-sensitive notices here

Create your account, then select "Register for Operating Authority / USDOT Number." The system will walk you through a multi-page form. Take your time — errors here cause delays that can push your activation date back weeks.

Step 2: Complete the OP-1 Application

The OP-1 form is the core application for motor carrier operating authority. For auto transport specifically, you are applying as a Property Carrier hauling vehicles. Key fields to fill in correctly:

Commodity Classification

Select "Vehicles (automobiles, trucks, trailers, buses, etc.)" under the commodity list. Do not select hazmat unless you are specifically planning to haul hazmat — adding it triggers additional safety and financial requirements you may not be ready for.

Operation Classification

Select "For-Hire" if you are moving other people's vehicles. Select "Private" only if you are moving your own company's vehicles. Most auto haulers select For-Hire.

CMV (Commercial Motor Vehicle) Count

Enter the number of trucks you plan to operate. You can start with 1. This does not lock you in — you update your fleet count annually through the MCS-150 biennial update (more on that below).

Pay the $300 filing fee by credit or debit card. Once submitted, FMCSA publishes a notice in the FMCSA Register — a 10-business-day protest period begins. During this window, existing carriers can formally object to your application. Protests are rare in auto transport, but the waiting period is mandatory.

Step 3: File Your Insurance (BMC-91 and BMC-34)

This is the step most new carriers underestimate. Your operating authority will not activate until FMCSA receives proof of insurance electronically from your insurer. The clock starts when you submit the OP-1, but authority does not grant until insurance is filed — so get your insurance carrier lined up before you even submit the application.

Minimum Insurance Requirements for Auto Haulers

• Public Liability (BMC-91): $750,000 minimum for vehicles under 10,001 lbs GVWR; $1,000,000 for larger vehicles. Most insurers and brokers require $1,000,000 regardless of vehicle class.
• Cargo Insurance (BMC-34): Not federally required for most carriers, but every broker and shipper will require it. Standard is $100,000 per occurrence for auto transport.
• Bobtail / Non-Trucking Liability: Covers your truck when not under dispatch. Required by most lenders if you are financing your truck.

Budget $8,000–$18,000 per year for a single-truck auto hauler policy depending on your driving history, state, and equipment. Costs drop significantly per unit once you have 3–5 trucks under the same authority. Ask your insurer to file the BMC-91 electronically with FMCSA as soon as your OP-1 is submitted.

Process Agent (BOC-3)

You must also designate a process agent in every state where you operate by filing a BOC-3 form. A process agent is a registered agent who can accept legal documents on your behalf. Companies like National Processing Agent and FMCSA-registered services handle this for $25–$50 as a one-time fee and file the BOC-3 electronically. Do not skip this — operating authority will not activate without it.

Step 4: Wait for Authority Activation and Set Up Your UCR

After the 10-business-day protest period closes and FMCSA confirms your insurance and BOC-3 are on file, your operating authority activates. You will receive an email from FMCSA with your MC number and a copy of your authority certificate. Total timeline from submission to active authority is typically 20–25 business days, though it can stretch to 30 days if there are filing gaps.

Unified Carrier Registration (UCR)

Once your authority is active, you must register under the Unified Carrier Registration program and pay an annual fee based on fleet size. For 1–2 trucks, the 2024 fee is $76 per year. Register at ucr.gov. UCR registration is required before you operate — it is not optional.

MCS-150 Biennial Update

FMCSA requires every carrier to update their MCS-150 (Motor Carrier Identification Report) every two years. Missing this update causes your USDOT number to be flagged as inactive, which will shut you down from load boards and broker packets. Set a calendar reminder — the update is free and takes 10 minutes online.

Step 5: Get on the Load Boards and Build Your Carrier Packet

With your MC number active, you can now register on Central Dispatch and Super Dispatch — the two primary load boards for auto transport in the US. Both require your MC number, proof of insurance, and USDOT number to activate your carrier account.

You will also need a carrier packet ready for brokers. A standard auto transport carrier packet includes:

• Certificate of Insurance (COI) with the broker listed as certificate holder
• W-9 form (for payment processing)
• Copy of your MC authority certificate
• Signed broker-carrier agreement
• Voided check or ACH payment details for direct deposit

Keep digital copies of all documents in a single folder. You will share this packet dozens of times in your first year. If you are managing carrier packets, insurance renewals, and driver assignments manually in spreadsheets, that process breaks down fast — see how AutoHauler AI compares to spreadsheet-based fleet management.

Common Mistakes That Delay or Revoke Your Authority

• Insurance lapses: If your insurer cancels your BMC-91 for non-payment, FMCSA automatically revokes your operating authority. Even a one-day lapse creates a compliance record that brokers can see.
• Wrong business name: The name on your FMCSA registration must match your state business registration exactly. A single character difference causes verification failures when brokers run your MC number.
• Missing UCR registration: Technically you are not legal to operate until UCR is filed, even after your MC number activates.
• Not updating MCS-150: FMCSA sends reminders, but missing the biennial update is one of the most common reasons carriers get flagged during roadside inspections.
• Adding drivers without checking CDL status: All CDL holders in your fleet must be in the FMCSA Drug & Alcohol Clearinghouse. Non-compliance during a DOT audit can suspend your authority.

Have questions about specific requirements for your state or fleet size? Visit our FAQ for answers to common compliance questions from auto transport operators.

What Comes Next After You Are Active

Getting your MC number and USDOT number is the starting line, not the finish. As you add trucks and drivers, the compliance paperwork compounds: annual UCR renewals, MCS-150 updates, insurance certificate management, driver qualification files, IFTA fuel tax reporting (if you operate in multiple states), and DOT inspection records. Operators who try to manage all of this manually in spreadsheets find themselves spending more time on paperwork than dispatch. AutoHauler AI centralizes your fleet records, documents, and driver assignments in one place built specifically for auto transport carriers. Start a free trial and see how much time you get back in your first week.