Commercial General Liability (CGL): Limits & Contractor COI Guide

Figure 1.1: Commercial General Liability insurance infographic showing $1M occurrence, $2M aggregate limits and Certificate of Insurance workflow • Analysis verified by PolicyGuide Editorial Research.

1. What Is Commercial General Liability (CGL) Insurance?

Whether you operate as an independent electrical contractor, a commercial painter, an IT consultant, or an LLC operating a retail boutique, Commercial General Liability (CGL) is the foundational cornerstone of business risk management.

Personal insurance policies specifically exclude business pursuits. If a client visits your home office and slips on an icy stair tread, or if you accidentally drop a power tool through a customer’s imported marble countertop on a jobsite, your personal homeowners and umbrella policies will deny the claim immediately.

Commercial General Liability shields your business entity and personal assets against third-party bodily injury, tangible property damage, and associated legal defense costs.

2. Decoding the Limits: What Does $1,000,000 / $2,000,000 Actually Mean?

When an enterprise client or general contractor requires you to show proof of a "$1M / $2M policy," they are referencing standard split liability limits:

$1,000,000 Each Occurrence Limit: The maximum dollar amount the insurance company will pay for a single accident or incident. If an electrical short you wired causes a fire with $800,000 in property damage, the single occurrence limit fully covers the loss.

$2,000,000 General Aggregate Limit: The maximum total dollar amount the insurer will pay for all combined claims that occur during the entire 12-month policy period.

$2,000,000 Products-Completed Operations Aggregate: A critical sub-limit for trade contractors. It protects your business if work you completed 6 months ago fails—for example, a copper pipe joint you soldered fails, flooding a client’s server room weeks after you signed off on the job.

3. The Anatomy of a Certificate of Insurance (COI)

Before any general contractor allows you on a jobsite, or before a commercial landlord hands you the keys to an office lease, you must produce a Certificate of Insurance (ACORD 25 form).

4. How Much Does Commercial General Liability Cost in 2026?

CGL premiums are calculated based on your industry classification (NAICS / SIC code), your gross annual business revenue, your annual payroll, and your geographic location.

- Low-Risk Professionals (IT Consultants, Graphic Designers, Accountants): $350 to $600 per year ($30–$50/mo).

- Artisan Trade Contractors (Electricians, Drywallers, Painters, Landscapers): $800 to $1,800 per year ($70–$150/mo).

- High-Risk Trade Contractors (Roofers, Tree Trimmers, General Contractors): $2,800 to $6,500+ per year due to height and structural collapse exposure.

5. Surviving the Annual Insurance Premium Audit

Every CGL policy is subject to a mandatory Annual Premium Audit at the end of each policy term. When you bind your policy, your premium is estimated based on your projected annual revenue and payroll.

If your business grew faster than anticipated and your actual payroll doubled, the insurer will send an audit invoice demanding additional retroactive premium. Crucially, if you hired 1099 subcontractors during the year and cannot provide copies of their active Certificates of Insurance, the auditor will classify them as your direct employees and bill you for their exposure!