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Certificate of Insurance Explained Simply

  • Writer: Sofia Müller
    Sofia Müller
  • Sep 7
  • 4 min read

When doing business, trust and proof of protection are just as important as skills and contracts. Many companies, clients, and property owners ask for proof that you carry insurance before signing an agreement.

This proof comes in the form of a Certificate of Insurance (COI). A COI is not the insurance policy itself but a summary that shows key details like coverage type, policy limits, and effective dates. For businesses, contractors, and freelancers, having a COI ready can mean the difference between winning a deal and losing it.

In this guide, I’ll explain what a certificate of insurance is, why it’s important, and how it helps protect both sides in business.


Framed "Certificate of Insurance" sign on desk with laptop, pen, document. Blue and white design, office setting, plant in background.

What is a Certificate of Insurance?

A certificate of insurance is a document issued by an insurance company or broker that provides evidence of an active insurance policy. It summarizes the most important details of coverage without including every policy term.

  • Basic proof: Shows you have valid insurance.

  • Summarized details: Lists coverage type, policy limits, and duration.

  • Not the policy itself: Just a snapshot, not the full contract.

COIs are commonly used in construction, events, and service industries where clients want proof before allowing work to start.

Why is a Certificate of Insurance Important?

Certificates of insurance build confidence between businesses and clients. Without them, agreements may be delayed or canceled.

  • Client assurance: Confirms the business can cover potential damages.

  • Risk transfer: Protects clients from liability if something goes wrong.

  • Compliance: Many contracts require a COI.

  • Professional trust: Shows you operate responsibly.

For contractors, providing a COI is often the first step toward starting a project. For clients, it ensures financial protection.

What Information is Included in a COI?

A certificate of insurance typically contains the following key details:

  • Policyholder name: The insured business or individual.

  • Insurance company: The provider issuing coverage.

  • Types of coverage: Liability, property, auto, workers’ compensation.

  • Policy limits: Maximum amount the insurer will pay.

  • Effective and expiration dates: Coverage start and end.

  • Certificate holder: The client or company requesting proof.

This information allows clients to quickly check if the policy meets their requirements.

When Do You Need a Certificate of Insurance?

There are many situations where a COI is necessary:

  • Construction projects: Contractors provide proof before starting work.

  • Event hosting: Venues often require it from organizers.

  • Service agreements: Freelancers and vendors show coverage to clients.

  • Leasing property: Landlords request COIs from tenants running businesses.

  • Partnerships: Businesses check partners’ insurance before collaborations.

In short, anytime risk is shared between two parties, a COI is often required.

How to Get a Certificate of Insurance

Getting a COI is a simple process:

  1. Contact your insurer or broker: Request a COI for a client.

  2. Provide details: Share who the certificate holder is.

  3. Insurer issues COI: Usually within a day.

  4. Send to client: Either digitally or as a printed copy.

Most insurers provide COIs free of charge, but some may charge for special requests like custom endorsements.

Certificate of Insurance vs Insurance Policy

Many people confuse a COI with the actual insurance policy. Here’s the difference:

  • COI: A summary showing proof of coverage, used for contracts and agreements.

  • Insurance policy: A detailed legal contract with full terms, exclusions, and endorsements.

Think of a COI as your driver’s license (proof you can drive) and the insurance policy as the law book (all the rules of driving).

Benefits of Certificates of Insurance for Clients

For clients or project owners, COIs offer peace of mind:

  • Risk reduction: Ensures contractors carry liability coverage.

  • Financial protection: Prevents clients from paying for third-party damages.

  • Quick verification: Easy to confirm if policies are valid and sufficient.

  • Legal compliance: Many industries require proof of insurance by law.

This protects clients from unexpected costs if accidents happen during a project.

Risks of Not Having a COI

If you don’t provide or request a COI, risks increase for both sides:

  • Contract delays: Projects may not start without proof.

  • Legal exposure: Clients could be held liable for damages.

  • Lost opportunities: Businesses may lose deals if unable to show coverage.

  • Reputation damage: Operating without proof can reduce trust.

That’s why COIs are seen as essential in professional dealings.

Conclusion

A certificate of insurance may look like a simple piece of paper, but it carries a lot of weight in business. It is proof that you are insured, responsible, and prepared for risks. For contractors, freelancers, and businesses, keeping a COI ready ensures smoother deals and builds client trust. For clients, asking for a COI protects against financial surprises. In today’s business world, a COI is not just paperwork — it is your ticket to trust and opportunity.

FAQs

What is a certificate of insurance?

A certificate of insurance is a document issued by an insurer that proves you have active coverage. It summarizes key details like policyholder name, coverage type, limits, and expiration dates. It is commonly used in contracts to assure clients that the business is financially protected against accidents, damages, or liabilities.

Why do clients request a certificate of insurance?

Clients ask for a COI to confirm that contractors, vendors, or partners carry the right insurance. This protects clients from paying damages if an accident happens during the project. It is often a contract requirement and ensures that risks are fairly transferred to the insured party, not left to the client.

How do I get a certificate of insurance?

To get a COI, contact your insurance provider or broker and request one. You’ll need to provide the certificate holder’s details so the insurer can issue it correctly. Most insurance companies issue COIs within a day, often at no cost. You can then send the certificate to your client as proof of coverage.

Is a certificate of insurance the same as an insurance policy?

No, a COI is not the same as a full insurance policy. The policy is a legal contract with all terms, exclusions, and coverage details. A COI is just a snapshot summary that proves the policy exists and is active. Clients use COIs for quick verification, not as a replacement for full policy review.

When do I need a certificate of insurance?

You’ll need a COI in situations like construction projects, event planning, service contracts, or renting business property. Clients, landlords, or project owners usually require proof before allowing work to start. Having a COI ready avoids delays, builds trust, and ensures compliance with legal or contractual requirements in many industries.

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