How to Get Your Trucking Authority (MC Number): A Step-by-Step Guide

Getting your trucking authority — commonly called your MC number or motor carrier authority — is the legal requirement for operating as an interstate for-hire carrier in the United States. Without it, you cannot legally haul freight across state lines for compensation. The process is more straightforward than most people expect, but the compliance requirements that kick in once you are active are where carriers most commonly get into trouble. Here is a complete walkthrough.

What Is Trucking Authority?

Trucking authority is the federal operating permission granted by the Federal Motor Carrier Safety Administration (FMCSA) that allows a carrier to transport regulated commodities in interstate commerce for hire. It comes in the form of an MC number (Motor Carrier number) assigned to your business entity. Without active authority, you are not legally permitted to accept payment for hauling freight across state lines.

Note: if you are a private carrier hauling only your own goods, you need a USDOT number but not necessarily MC authority. If you are hauling for others — as a for-hire carrier — you need both a USDOT number and MC authority.

Step 1 — Form Your Business Entity

Before applying for authority, register your business. Most new carriers form an LLC in their home state. An LLC provides liability protection and is the standard business structure for owner-operators and small fleets. The filing fee varies by state — typically $50 to $200. You will also need a Federal EIN from the IRS, which is free and takes minutes online.

Your business name, EIN, and state registration will be used throughout the FMCSA application process, so have these ready before you start.

Step 2 — Apply for a USDOT Number

Go to the FMCSA's online registration system at FMCSA.dot.gov and create an account. Apply for a USDOT number first — this is your carrier identification number and is required before you can apply for operating authority. The USDOT application is free and asks for information about your business, the type of operation you will run, your equipment, and your cargo.

Step 3 — Apply for MC Operating Authority

From the same FMCSA portal, apply for Motor Carrier authority. The filing fee is $300 per authority type. Most new carriers apply for Property authority (to haul general freight). If you plan to haul household goods or passengers, those require separate authority types with additional requirements.

After your application is submitted, FMCSA publishes a notice in the Federal Register. There is a 10-day protest period during which existing carriers can object to your application (rare in practice). If no valid protest is filed, your authority is granted — but it is not yet active.

Step 4 — Get the Required Insurance

Before your authority activates, you must file proof of the required insurance with FMCSA. For property carriers hauling general freight, the minimums are $750,000 in primary liability for vehicles under 10,001 pounds GVWR and $1,000,000 for vehicles over that threshold. If you haul hazardous materials, the minimums are higher.

Your insurance carrier files the required forms (Form MCS-90 and a BMC-91 or BMC-91X) directly with FMCSA on your behalf. Trucking insurance costs vary significantly based on your driving record, equipment age, and the commodities you haul. New authorities often pay $8,000 to $18,000 or more annually for primary liability — one of the largest startup costs for a new carrier.

Step 5 — Get a BOC-3 Filing

A BOC-3 (Blanket of Coverage) filing designates a process agent in every state where you operate. This is a legal requirement — it ensures there is a representative in each state who can receive legal documents on your behalf. BOC-3 filings are handled by process agent companies and typically cost $20 to $40 as a one-time fee.

Step 6 — Register for UCR and IFTA

Once your authority is active, you need to register for UCR (Unified Carrier Registration) annually. UCR fees are based on fleet size and range from approximately $76 per year for a single vehicle to several hundred dollars for larger fleets. Registration opens each fall for the following year.

If you will operate in multiple states — which interstate carriers by definition do — you need an IFTA license from your base state for fuel tax reporting. IFTA requires quarterly filings that report your miles by jurisdiction and fuel purchases. Getting this set up correctly from the start prevents audit problems later.

The New Entrant Safety Audit

All new motor carriers are subject to a New Entrant Safety Audit within the first 12 months of receiving authority. This is an FMCSA review of your safety management practices and regulatory compliance. Auditors will look at your driver qualification files, Hours of Service records, drug and alcohol testing program, vehicle inspection records, and accident register.

Failing a new entrant audit — or not having the required files in place — results in an Unsatisfactory safety rating, which effectively shuts down your operation. This is the stage where most new carriers get into trouble, because they focused on getting authority and ignored the compliance requirements that activate the moment they start operating.

Compliance Is Where New Carriers Succeed or Fail

Getting authority is a process that takes 3 to 6 weeks and follows a clear checklist. Staying compliant once you are operating is the harder, ongoing work — and it is where carriers most often make costly mistakes. Driver qualification files, Hours of Service compliance, drug testing programs, and CSA score management require consistent attention and knowledge of the regulations that govern each area.

The Dispatch Training Center offers Safety Manager Training designed to give carriers, compliance professionals, and dispatchers the working knowledge to manage these requirements correctly. Whether you are a new carrier who just received authority or a dispatcher advising carriers on compliance, understanding what FMCSA expects — and how to demonstrate it — is essential.

Learn more about Safety Manager Training at learndispatchtoday.com/safety-manager-training.