🚛
Glossary

MC Number

A Motor Carrier number is a unique identifier issued by the FMCSA that authorizes a trucking company to transport regulated freight across state lines.

What Is MC Number?

An MC (Motor Carrier) number is your federal license to haul freight for hire across state lines. It is issued by the Federal Motor Carrier Safety Administration (FMCSA) and is required for any carrier transporting regulated commodities in interstate commerce. The MC number is different from your DOT number — your DOT number identifies your company for safety purposes, while your MC number specifically authorizes you to operate as a for-hire carrier.

Getting your MC number involves filing an OP-1 form with the FMCSA, which costs $300. After filing, there is a 10-day protest period before your authority becomes active. During this time, you also need to file your BOC-3 (process agent designation) and obtain the required insurance minimums — typically $750,000 in liability coverage for general freight and $1,000,000 for hazmat.

Many new owner-operators confuse having a DOT number with having operating authority. You can have a DOT number without an MC number (for example, if you only operate intrastate or haul exempt commodities), but you cannot legally broker or carry regulated freight interstate without an active MC number.

⚠️

Why It Matters

Without an active MC number, you cannot legally haul regulated freight for hire across state lines. Brokers and shippers verify your MC number before offering loads, so an inactive or revoked authority means zero revenue. Keeping your MC number in good standing is the foundation of your business.

📚

Real-World Example

Carlos just got his CDL and bought a used Freightliner. He applied for his MC number (MC-1425678) and paid the $300 filing fee. During the 10-day waiting period, he set up his $750,000 liability insurance and filed his BOC-3. Once his authority went active, brokers on DAT could see his MC number and start offering him loads. Within his first week with FF Dispatch, he booked a Dallas-to-Atlanta dry van load at $2.85/mile.
⚙️

How FF Dispatch Handles This

FF Dispatch verifies your MC number status before onboarding and monitors it for any compliance issues. We also help new authorities get set up with the right insurance and BOC-3 filing so you can start hauling faster.

Related Terms

DOT Number

A Department of Transportation number is a unique identifier assigned to commercial motor carriers for safety tracking, inspections, and compliance monitoring.

Operating Authority

Operating authority is the federal permission granted by the FMCSA that allows a company to operate as a for-hire carrier, broker, or freight forwarder in interstate commerce.

FMCSA

The Federal Motor Carrier Safety Administration is the US government agency that regulates the trucking industry, issues operating authority, and enforces safety standards.

Freight Broker

A freight broker is a licensed intermediary that connects shippers who need freight moved with carriers who have available trucks, earning a commission on each transaction.

CSA Score

A CSA (Compliance, Safety, Accountability) score is a safety rating system used by the FMCSA to evaluate and rank motor carriers and drivers based on inspection and crash data.

Related Content

Dry Van DispatchReefer DispatchFlatbed DispatchBox Truck Dispatch

Frequently Asked Questions

How long does it take to get an MC number?+
The FMCSA filing takes about 20 minutes online, but there is a mandatory 10-day protest period before your authority goes active. In total, expect 2-3 weeks from filing to hauling your first load.
Can I operate with just a DOT number and no MC number?+
Only if you haul exempt commodities or operate exclusively within one state. For interstate for-hire trucking of regulated freight, you need both a DOT number and an MC number.
What happens if my MC number gets revoked?+
You must immediately stop hauling freight for hire. Common causes include lapsed insurance or failure to file required documents. You can apply to reinstate after resolving all outstanding issues.

Have Questions About MC Number?

Our dispatchers explain everything in plain English. Book a free 15-minute call — no pressure, no contracts.

Book a Free Call
← Back to Glossary