Certificate of Insurance (COI)

A certificate of insurance (COI) is a standardized document — typically the ACORD 25 form — that summarizes key policy details for a third party, confirming that a business carries specific types and amounts of insurance coverage. COIs do not grant or modify coverage; they are informational documents that verify a policy exists, its effective and expiration dates, the named insured, the carrier, and the limits of liability.

Why Certificate of Insurance Matters for Independent Agents

Certificate management is one of the most time-consuming administrative tasks in a commercial insurance agency. A single contractor account may require 15-30 certificates per year — one for each general contractor, property owner, or project they work on. A property management company with 50 locations might need certificates for every landlord, lender, and vendor. The volume adds up fast, and certificate requests are almost always urgent: the client needs the COI today because they cannot start work, sign a lease, or close a deal without it.

For agencies, certificates are also a retention tool. The more entities that are listed as certificate holders on a client's policies, the more integrated the agency becomes in the client's business operations. If the client switches agents, every certificate has to be reissued with the new agency's information — a hassle that makes clients think twice before moving their account.

However, certificates carry meaningful E&O risk when agents do not handle them carefully. The most common COI-related error is issuing a certificate that implies coverage does not actually exist. For example, a general contractor's subcontract may require $2 million per occurrence general liability limits, but the subcontractor only carries $1 million. An agent who issues a COI showing $1 million limits when the contract requires $2 million has done their job correctly — the certificate accurately reflects the policy. But an agent who verbally assures the GC that the coverage "meets their requirements" without verifying the contract terms has created an E&O exposure.

How Certificate of Insurance Works

The ACORD 25 (Certificate of Liability Insurance) is the industry-standard COI form. It contains the following sections:

• Producer information — The agency's name, address, and contact details.
• Insured information — The named insured's business name and address, matching the actual policy.
• Insurers affording coverage — The carriers and their AM Best ratings. Multiple carriers may appear if the insured has different lines with different carriers (for example, GL with Hartford and auto with Progressive Commercial).
• Coverages — A grid showing each coverage type, policy number, effective date, expiration date, and limits for commercial general liability, automobile liability, umbrella/excess, and workers' compensation.
• Description of operations — A free-text field for the specific project, location, or contract. This is where additional insured status, waiver of subrogation, and primary/non-contributory language are noted.
• Certificate holder — The entity requesting the certificate, along with their address.

An important principle: the ACORD 25 explicitly states that "this certificate does not amend, extend, or alter the coverage afforded by the policies." A COI cannot grant additional insured status or waive subrogation — those require policy endorsements. The certificate can only confirm that endorsements exist.

The typical certificate request workflow:

1. Request received — The client or certificate holder sends the request, often including a contract with specific insurance requirements.

2. Requirements review — The agent reviews contract requirements against actual coverage. If requirements exceed policy limits or need endorsements not on the policy, the agent discusses options with the client.

3. Endorsement processing — If additional insured or waiver of subrogation endorsements are needed, the agent requests them from the carrier. Blanket additional insured endorsements (like CG 20 33 or CG 20 38) automatically extend status to anyone the insured is contractually required to name.

4. Certificate issuance — The agent generates the ACORD 25 through their agency management system (Applied Epic, Vertafore AMS360, HawkSoft, etc.) and sends it to the certificate holder.

5. Renewal management — When policies renew, all outstanding certificates must be reissued with updated dates and policy numbers. Agencies with hundreds of active certificates use automated tracking to manage this process.

Related Terms

• Additional Insured — A third party added to a policy by endorsement who receives liability protection under the insured's policy, often confirmed via the COI
• Insurance Binder — A temporary proof of coverage issued before the full policy, which may be needed before a COI can be generated
• Insurance Endorsement — A policy modification that actually changes coverage, unlike a COI which only confirms existing coverage