Commercial trucking keeps goods moving between Canada and the United States every day. Insurance is a legal requirement on both sides of the border because trucks and trailers carry valuable cargo, operate in high-risk conditions, and must meet strict provincial, state, and federal rules. 

Commercial trucks and trailers face specific insurance rules that shape daily hauling, contract requirements, and cross-border travel. Knowing these rules supports safer and more reliable operations.

Related Article: What Does Commercial Truck and Trailer Insurance Cover?

Why Truck and Trailer Insurance Is Required

Insurance protects drivers, companies, and the public. A single collision can involve medical costs, cargo loss, property damage, and business interruption. Without proper coverage, a carrier may face penalties or lose operating authority. Truck and trailer insurance also supports contracts because shippers expect proof of coverage before releasing loads.

Regulators in Canada and the United States set minimum insurance amounts for commercial vehicles. These rules support safe transport and reduce financial risks for both carriers and clients.

Truck Insurance Requirements in Canada

Every commercial truck on Canadian roads must be insured. Rules vary by province, but the foundation stays consistent. 

Carriers need enough liability coverage to protect against injury or property damage. They also need accident benefits that support medical care and recovery after a collision. These components form the legally required base of any commercial auto policy.

Commonly Required Truck Coverage in Canada

Carriers usually need:

• Third-party liability for injury or property damage
  
  
• Accident benefits for medical care and income replacement
  
  
• Physical damage coverage when trucks are financed or leased
  
  
• Cargo coverage for the goods being transported
  
  
• Non-owned trailer coverage when pulling trailers not owned by the carrier
  
  

Canadian carriers that cross into the United States must meet both Canadian provincial rules and U.S. federal requirements. These combined obligations shape the final coverage limits on the policy.

Liability Minimums in Canada

Most provinces set their own liability minimums, and these amounts typically start at CAD 200,000. In practice, carriers choose CAD 1 million or more to support commercial contracts and cross-border travel. Many shippers will not release a load unless the carrier meets these higher limits.

Trailer Insurance Requirements in Canada

A trailer does not always share the same policy as the truck that pulls it. In many cases, the trailer requires separate coverage. When a trailer is owned, leased, rented, or exchanged, insurance obligations shift. This applies to dry vans, flatbeds, reefers, tankers, dump trailers, and other specialized units.

Common Trailer Coverage Needs in Canada

Most trailers require:

• Liability coverage when damage occurs during use
  
  
• Physical damage to repair or replace the trailer
  
  
• Cargo coverage when goods travel in or on the trailer
  
  
• Trailer Interchange coverage when exchanging trailers under contract obligations
  
  

If a trailer is used in a long-term lease, the agreement may require the carrier to insure the trailer as if it were owned. Short-term rentals may include limited coverage, but this coverage is rarely enough for commercial use.

Related Article: How Much Is Commercial Truck Insurance?

Truck Insurance Requirements in the United States

The United States has strict requirements through the Federal Motor Carrier Safety Administration (FMCSA). Any carrier that operates across state borders or enters the U.S. from Canada must meet these rules.

U.S. Federal Liability Requirements

Most freight carriers must carry:

• USD 750,000 to USD 1,000,000 in liability
  
  
• Higher limits when hauling hazardous materials
  
  
• Motor Truck Cargo coverage for the goods being transported
  
  
• Physical damage coverage when required by lenders or fleet owners
  
  

Canadian carriers entering the United States must also complete federal filings. These forms confirm that the insurance policy meets U.S. rules. Without these filings, operating authority becomes inactive.

Common U.S. Filings for Canadian Carriers

Canadian carriers may need:

• MCS-90 to show financial responsibility
  
  
• BMC-32 for cargo
  
  
• BOC-3 for process agents
  
  

These forms support border clearance and show that the policy meets U.S. federal limits. Without active filings, a truck may be held at the border or placed out of service.

Trailer Insurance Requirements in the United States

Trailers need insurance when used for commercial hauling. This includes trailers owned by the carrier as well as trailers exchanged under contract.

U.S. coverage often includes:

• Liability for trailer-related incidents
  
  
• Collision and comprehensive coverage
  
  
• Cargo coverage
  
  
• Trailer Interchange coverage for exchanged trailers
  
  

Many contracts require proof of specific limits before loading or accepting a trailer. Carriers must also update insurance filings when limits change.

Cross-Border Insurance Considerations for Canadian Carriers

Cross-border operations require a careful look at both Canadian and U.S. requirements. Because liability limits differ, the policy must meet the highest requirement between the two countries. Carriers also need enough cargo coverage for high-value loads and must confirm trailer coverage before pulling any unit that is not owned.

Key points include:

• Matching coverage to haul type and route
  
  
• Maintaining higher liability limits for U.S. operations
  
  
• Ensuring filings remain active
  
  
• Confirming coverage for leased or exchanged trailers
  
  
• Reviewing cargo contracts for required limits
  
  

This approach avoids delays at the border and reduces the risk of rejected shipments.

Related Article: Is Boat Insurance Mandatory in Ontario?

Why Proper Coverage Prevents Delays

Border inspections, weigh station checks, and roadside inspections can stop a truck if insurance is missing or does not meet the required limits. This leads to delays that affect schedules and customer relationships. Carriers may also face penalties or suspension of operating authority.

Insurance must stay active, updated, and aligned with both Canadian and U.S. rules to avoid these issues.

How Marathon Insurance Supports Commercial Fleets

Marathon Insurance helps carriers select coverage that meets Canadian and U.S. requirements. With over 30 years of experience, the brokerage offers access to major insurers and clear advice that supports safe and compliant operations. 

Our commercial products protect businesses from liability claims and other risks, and our team provides guidance that helps clients understand coverage options and manage policies with confidence.

Support includes:

• Review of liability, cargo, and physical damage needs
  
  
• Cross-border compliance guidance
  
  
• Advice on trailer coverage and Interchange agreements
  
  
• Access to competitive rates through strong insurer partnerships
  
  
• 24/7 support through a digital platform
  
  

This gives carriers a dependable source of information and coverage options.

What This Means for Your Fleet

Commercial truck and trailer insurance is required in both Canada and the United States. Each region sets its own rules, and coverage must meet the highest requirement across all routes. 

Liability, accident benefits, cargo protection, and trailer-specific coverage form the foundation of compliant transport. Clear guidance from a broker supports safe travel, contract stability, and border readiness.

Protect your fleet with coverage that meets Canadian and U.S. requirements. Marathon Insurance can help you understand your policy needs and secure options that support cross-border operations. 

Contact our team to review your truck and trailer insurance today.

Frequently Asked Questions

Do I need separate policies for my truck and trailer?

Many carriers insure trucks and trailers under the same commercial auto policy, but this depends on ownership, leasing terms, and contract obligations. Some trailers need separate coverage, especially when part of a Trailer Interchange agreement.

Are Canadian liability limits enough for U.S. travel?

Usually no. U.S. federal rules require higher limits for many haul types. Carriers who enter the U.S. often increase liability to meet FMCSA standards and avoid delays.

Does cargo coverage follow the truck or the trailer?

Cargo coverage follows the goods under the control of the carrier. Coverage must match haul type, value, and contract rules, whether the cargo sits in a company-owned trailer or an exchanged unit.

Do short-term trailer rentals include insurance?

Some rental agreements include limited coverage, but these limits are often too low for commercial hauling. Carriers usually add physical damage and liability coverage to meet contract or lender requirements.

What happens if I cross the border without the correct insurance filings?

A truck may be delayed, denied entry, or placed out of service. Filings such as MCS-90 and BMC-32 confirm that the policy meets U.S. federal rules and must remain active.

Do I need Trailer Interchange coverage for shared trailers?

Yes, when a contract requires responsibility for a trailer you do not own. This coverage protects the trailer while in your care, custody, and control.

How often should commercial trucking policies be reviewed?

Policies should be reviewed at least once a year or whenever fleet size, routes, cargo types, contracts, or operating authority change. A review keeps limits accurate and supports compliance.