What is a Certificate of Insurance (COI) and Why Do Your Clients Demand It?


In the fast-paced world of contracting, winning a bid is only half the battle. Once you secure the project, the paperwork begins. Almost immediately, you will hear a familiar request from property managers, general contractors, and commercial clients: "Please send us your COI."

If you are new to the industry or looking to expand into commercial work, understanding what a Certificate of Insurance (COI) is—and why it is mandatory—is essential for your professional survival. A COI is more than just a piece of paper; it is the ultimate proof that you are a legitimate, responsible business owner.


What Exactly is a Certificate of Insurance?

A Certificate of Insurance is a concise, one-page document issued by your insurance company or agent that summarizes the essential details of your business insurance policies. It is not the policy itself, but rather a snapshot of your coverage.

A typical COI will clearly display:

  • Your Business Name and Address: Proving the insurance belongs to you.

  • The Insurance Carrier: The company providing the coverage.

  • Types of Coverage: Such as general liability, workers' compensation, and commercial auto.

  • Policy Numbers and Effective Dates: Showing that the policy is currently active.

  • Coverage Limits: The maximum amount the policy will pay out for a claim.


Why Clients Demand a COI Before Work Begins

For your clients, hiring a contractor is a high-risk endeavor. If something goes wrong—a fire caused by welding, a visitor slipping on debris, or a subcontractor getting injured—the property owner could be held legally liable. A COI is their primary shield against this risk.

Here is why they demand it:

1. Risk Transfer and Protection

A COI proves that if damage occurs, the financial burden will fall on your insurance company, not the client's. It transfers the risk of accidents from the property owner to the contractor.

2. Legal and Contractual Compliance

For most commercial projects, having insurance is a legal requirement. General contractors are legally required to verify that all their subcontractors are insured. Without a COI, they cannot comply with their own contractual obligations.

3. Professionalism and Credibility

A COI is a sign of legitimacy. It shows that you are a serious professional who takes liability seriously. It distinguishes you from uninsured handymen and protects your reputation as a reliable partner.


The Importance of "Additional Insured" Status

Clients will frequently ask to be named as an "Additional Insured" on your policy and demand to see this status reflected on the COI. This is a crucial step for them.

Being named an additional insured provides your client with direct protection under your insurance policy for claims arising out of your work. If a lawsuit occurs due to your actions, your insurance will defend the client as well as you. While this may slightly increase your premium, it is often a non-negotiable requirement for securing contracts with large commercial firms or general contractors.


How to Get a COI Quickly

In competitive bidding, speed matters. If you lose a contract because you took three days to produce a document, you have missed a significant opportunity.

  • Go Digital: Work with an insurance agent that offers an online portal where you can generate and send COIs instantly via email.

  • Keep Your Information Updated: Ensure your insurer always has the correct limits and business scope to avoid delays when you need to send a COI in a hurry.


Protecting Your Livelihood

Ultimately, a Certificate of Insurance is the bridge between securing a contract and performing the work. It assures your clients that you are protected, and more importantly, it ensures that your business is protected from devastating financial losses.


Essential Guide to Contractor Insurance: Protecting Your Business and Boosting Professional Credibility