What is Certificate of insurance (COI), and what should an ABA practice owner know before applying it? A certificate of insurance is a document that summarizes selected insurance policies issued to a named insured on a stated date. It is evidence, not the insurance contract. An ABA owner should verify the policy, endorsements, insured entity, coverage type, dates, limits, certificate holder, and contract requirements before treating a COI as complete.
Editorial approval scope: The team checked current source fidelity, scope boundaries, dates, arithmetic, reader usefulness, practical workflow, and general-information limitations.
A COI is evidence rather than coverage language
New York's insurance regulator defines a certificate of insurance as evidence of property or casualty insurance and distinguishes it from a policy or binder. Its approved commercial-liability certificate states that the document grants no rights and cannot amend, extend, or alter coverage.
That distinction matters when a lease, school, vendor, or payer contract requests insurance. A typed description on a certificate cannot create an endorsement the insurer never issued. A current COI can still be incomplete for the contract.
Read each field for its narrow purpose
A commercial COI may identify:
- producer and insurer
- named insured and address
- policy type and number
- occurrence or claims-made form
- effective and expiration dates
- limits and deductibles or retentions
- automobile symbols or scheduled coverage categories
- certificate holder
- description of operations
- cancellation language
The limits shown may have been reduced by paid claims. An aggregate can be shared across locations, claims, or coverage parts. A certificate usually will not reproduce every definition, exclusion, condition, sublimit, retroactive date, or other-insurance clause.
Date every completed review.
Additional insured status requires the endorsement
Many contracts ask the practice or its vendor to name another party as an additional insured. The COI may say “additional insured,” yet the actual status, covered operations, time period, and conditions come from the policy endorsement.
Request the endorsement when the contract requires it. Match its form number, policy number, named insured, additional party, operations, location, and edition date. Do the same for primary and noncontributory language, waiver of subrogation, completed operations, notice, or other requested rights.
The certificate holder field identifies the recipient. It does not automatically make that recipient an additional insured, loss payee, or beneficiary.
Contract and insurance reviews are separate
Counsel should interpret indemnity, defense, insurance, waiver, and notice obligations. A broker should identify whether the policy responds and which endorsement supplies the requested status. Operations should track the evidence and renewal date.
Separate these questions:
- What does the contract require?
- What did the practice request from its broker?
- What did the insurer bind and issue?
- What does the COI report?
- Do the forms satisfy the contract?
An insurance requirement can exceed available coverage or conflict with the policy. Resolve that gap before signature or service start.
A fictional COI check
Cedar Grove ABA prepares to serve students under a school agreement. The agreement contains eight insurance requirements. The COI correctly shows the named entity, general-liability policy, auto policy, workers' compensation policy, dates, and stated limits. Six requirements are evidenced.
Two remain held: the school requests additional-insured status and a waiver of subrogation, while no endorsements are attached. The completion rate is 6 of 8 requirements evidenced. It is not a statement that six requirements are covered or that a claim would be paid.
Cedar Grove asks its broker for the issued endorsements and has counsel confirm the contract language. Operations records the policy number, form number, effective period, contract, certificate holder, verification date, and owner. Service release stays separate from this insurance gate and still requires clinical, safety, staffing, payer, and legal readiness.
Validate certificates received from others
ABA practices may collect COIs from landlords, transportation vendors, staffing firms, contractors, or technology providers. Define which contracts require evidence and who reviews it.
Check the legal name, policy period, coverage type, limits, insurer, operations, endorsement evidence, and contract. Confirm unfamiliar or altered documents through the producer using trusted contact information. Store the certificate with the contract and endorsements. A vendor's COI does not replace due diligence, licensing, security, supervision, or indemnity review.
Renewal and cancellation need active controls
A certificate expires with the listed policy period. Set reminders early enough to request replacement evidence and resolve missing endorsements. Keep the prior certificate for historical claims and contract audits.
Cancellation wording on a COI may reflect only the policy's notice provisions. Do not assume the certificate holder will receive advance notice unless the actual policy or endorsement creates that duty. Ask the broker to explain the form.
Use a licensed agent, compare terms, and reassess coverage at least annually. Reissue certificates after carrier, policy, entity, limit, endorsement, or contract changes. Audit the register for expired evidence, mismatched names, missing forms, and unresolved holds.
Define release criteria for each contract rather than accepting a certificate by appearance. The reviewer should match the legal entity, dates, limits, policies, and required endorsements to the agreement, record every exception, and assign an approver. Keep work on hold when a material requirement lacks policy or endorsement evidence.
Related terms
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