Commercial insurance is modular. Most Ontario business insurance programs start with liability and property, then add coverage based on operations, contracts, and the losses that would hurt most. The right mix depends on what you do, where you operate, and what landlords, lenders, and clients require.
This guide breaks down the types of coverage commonly included in Ontario commercial insurance, what each part covers and does not cover, and how to choose a program that matches real risk.
Commercial insurance in Ontario
Commercial auto insurance
Business interruption insurance
Cyber insurance
Professional liability insurance
Who this applies to
This applies to Ontario businesses that:
Are buying commercial insurance for the first time
Are renewing and unsure what coverage sections mean
Need to satisfy lease, lender, or contract insurance requirements
Are expanding locations, services, vehicles, or staff
Want to avoid coverage gaps caused by missing endorsements
If you are searching for what does commercial insurance cover in Ontario, business insurance coverage types, or what coverage do I need for my business, the best answer starts with the losses that could shut you down.
Definitions
Commercial insurance: A set of coverages designed for business operations, commonly combining liability, property, and optional add ons.
Commercial general liability: Coverage for third party injury or property damage claims arising from your operations, subject to policy terms.
Commercial property: Coverage for building, contents, equipment, and stock after a covered physical loss, subject to policy terms.
Business interruption: Coverage that can help replace lost gross profit and pay certain continuing expenses after a covered loss interrupts operations, when purchased.
Endorsement: A policy add on or wording change that modifies coverage, such as adding sewer backup, equipment breakdown, or additional insured wording.
Deductible: The amount you pay before insurance responds. Deductibles vary by coverage section and loss type.
What types of coverage are included in Ontario commercial insurance
Many Ontario businesses purchase a commercial package policy or bundle that includes core coverage plus optional sections. Other businesses buy separate policies, especially for professional liability, cyber, and auto.
Below are the most common coverage types.
Commercial general liability (CGL)
CGL is the foundation for many Ontario businesses because it addresses third party claims.
What it can cover:
Customer injury claims, such as slip and fall
Property damage to others caused by your operations
Certain legal defence costs tied to covered claims
What it often does not cover:
Damage to your own work in many workmanship scenarios
Professional advice or service failures, which may need professional liability
Pollution and certain environmental losses without specific coverage
Contract penalties and liquidated damages
Common claim scenarios:
A visitor is injured at your premises
You damage a client’s property during service work
A subcontractor causes damage and you are named in the claim
Commercial insurance: Learn more
Commercial property insurance
Property insurance covers physical loss to business property, including buildings and contents.
What it can cover:
Fire, theft, and certain water damage depending on endorsements
Building and tenant improvements, if insured
Contents, equipment, and stock at the insured location
What it often does not cover:
Gradual wear and tear and maintenance issues
Flood and sewer backup without the right endorsements
Equipment breakdown related losses unless added
Cyber events that stop operations without physical damage
Common claim scenarios:
A small fire damages equipment and forces a shutdown
A burst pipe damages stock and tenant improvements
Theft from the premises after a break in
Business interruption and extra expense
Business interruption is often the most misunderstood part of a commercial insurance program. Many businesses are surprised to learn it is not always included.
What it can cover:
Lost gross profit during downtime after a covered loss
Certain continuing expenses such as rent and payroll, depending on structure
Extra expense to reopen faster, such as temporary locations or expedited service
What it often does not cover:
Downtime caused by non covered events
Outages not tied to a covered trigger
Revenue loss that exceeds selected limits or time periods
Common claim scenarios:
A water loss shuts down a retail location for weeks
A fire forces a restaurant to close during peak season
A supplier disruption causes downtime, only if contingent coverage is added
Business interruption insurance: Learn more
Commercial auto insurance
Commercial auto covers vehicles used for business, including fleets and service vehicles.
What it can cover:
Third party liability for accidents
Collision and comprehensive for owned vehicles when purchased
Coverage for listed drivers and scheduled vehicles
What it often does not cover:
Personal use assumptions that do not match business driving
Unlisted vehicles and drivers if not properly set up
Cargo and goods in transit unless cargo coverage is separate or endorsed
Common claim scenarios:
An accident during a service call
A vehicle theft from a job site
A liability claim involving a client or third party vehicle
Commercial auto insurance: Learn more
Professional liability (errors and omissions)
Professional liability is important for service based businesses where the main risk is financial loss from advice, design, or deliverables.
What it can cover:
Claims alleging negligence, error, or omission in your service
Certain legal defence costs tied to covered allegations
Claims arising from past work, subject to claims made structure
What it often does not cover:
Bodily injury and property damage, which is usually CGL
Intentional wrongdoing and fraudulent acts
Known incidents before policy inception
Common claim scenarios:
A client alleges a consultant error caused financial loss
A design mistake leads to project rework costs
A professional service fails to meet contract expectations
Professional liability insurance: Learn more
Cyber insurance
Cyber coverage addresses digital risk, including breach response and system interruption.
What it can cover:
Forensic and legal response costs
Notification and certain regulatory related costs depending on wording
Cyber business interruption for covered events, when included
Third party claims tied to privacy and network security
What it often does not cover:
Issues caused by known unremediated vulnerabilities
Certain fines and penalties depending on wording
Losses outside policy definitions or excluded triggers
Common claim scenarios:
Ransomware that stops billing and ordering
Email compromise leading to fraudulent payments
Data breach requiring notification and response
Cyber insurance: Learn more
Equipment breakdown
Equipment breakdown covers sudden breakdown of certain equipment, which can be a gap in standard property policies.
What it can cover:
Sudden mechanical or electrical breakdown
Repair and replacement costs for covered equipment
Associated business interruption in some forms
What it often does not cover:
Wear and tear and lack of maintenance
External causes already covered by property insurance
Losses outside covered equipment definitions
Common claim scenarios:
HVAC failure that shuts down operations
Electrical failure damages equipment
Refrigeration breakdown causes stock loss, if included
Crime insurance
Crime coverage is used where theft, fraud, or employee dishonesty is a real exposure.
What it can cover:
Employee dishonesty losses
Certain forms of theft and fraud
Some social engineering and funds transfer fraud, when included
What it often does not cover:
Fraud types not included in the wording
Losses outside required controls
Cyber events better handled under cyber coverage
Common claim scenarios:
Inventory theft tied to employee dishonesty
Funds transfer fraud after vendor impersonation
Cash and deposit theft depending on controls
What is covered and not covered depends on endorsements
Many coverage gaps are created by missing endorsements, not by missing core policies.
Common endorsement examples:
Sewer backup and water damage extensions
Flood where available
Off premises stock and transit
Additional insured and waiver wording for contracts
Contingent business interruption for key suppliers
Higher sub limits for tools, equipment, or stock peaks
If your business changes, endorsements often need to change as well.
How to pick the right mix
Start with your highest severity scenarios, not only your most common ones.
A practical approach:
Identify what loss would threaten cash flow or contracts
Match coverage to those losses
Confirm contract requirements early, especially limits and wording
Update values and operations annually so coverage stays aligned
Avoid duplicate coverage that increases premium without adding protection
Cost drivers and underwriting questions
Insurers price based on exposure and clarity.
Expect questions about:
Revenue, payroll, and staff counts
Locations, building type, and property values
Claims history and loss prevention steps
Vehicle use, drivers, and radius
Data handled and system dependency
Contract requirements for limits and additional insured wording
Clear submissions lead to cleaner quotes and fewer restrictive terms.
Mistakes that cause coverage gaps
Assuming business interruption is included without confirming
Insuring property at outdated values
Using personal auto for business driving
Skipping professional liability when advice and deliverables drive exposure
Ignoring cyber exposure because the business is small
Not aligning certificate requirements with actual endorsements
Failing to add transit or off premises stock coverage when needed
Checklist: build a commercial insurance program that fits
Use this checklist before renewal or before buying coverage.
List your top loss scenarios by severity
Confirm your contracts and lease requirements
Update property, equipment, and inventory values
Confirm vehicles and drivers match real use
Decide whether business interruption is needed and size it realistically
Identify whether professional liability or cyber is required
Confirm any required endorsements and certificate wording
FAQ
Is commercial general liability always included in Ontario commercial insurance?
Often yes in a package, but not always. Some businesses buy liability separately. Confirm it is in place and check the limits.
Does commercial property insurance include inventory and contents?
It can, but only if those values are insured and the location is listed. Stock peaks often need higher limits.
Is business interruption automatically included?
Not always. Many programs require you to add it. It should be sized based on gross profit and realistic downtime.
Do I need cyber insurance if I already have liability insurance?
Often yes if you store customer data or rely on systems. Liability policies are not designed for breach response and cyber interruption.
When do I need professional liability?
If your advice, design, or service performance can cause financial loss to a client, professional liability is worth reviewing.
Do I need commercial auto if I use my personal car for business?
Often yes if the vehicle supports business activity beyond commuting. Business use can change coverage.
How often should I review coverage types and limits?
At least annually, and anytime you add locations, vehicles, new services, or larger contracts.
Talk to Boardwalk
If you want a clean coverage map for your business, we can translate your operations into a program that matches how insurers underwrite risk in Ontario. The goal is simple: protect the business, satisfy contracts, and avoid gaps.
Request a quote or talk to a specialist.
What we need from you:
Business description and main operations
Annual revenue and payroll by role
Locations and property, equipment, and inventory values
Vehicle list and business use details if applicable
Any leases or client contracts with insurance requirements
Five year claims history and any open incidents
Coverage priorities, such as cyber, business interruption, or professional liability
