If you have ever sent proof of insurance to a client or landlord, you have probably run into both of these terms — often in the same request. They are frequently confused, and the difference is important, because one is just paperwork and the other actually changes who your policy protects.
What a certificate of insurance is
A certificate of insurance (COI) is a one-page summary that proves your policy exists. It lists your insurer, your policy numbers, the coverage types, the limits, and the effective dates. Clients, general contractors, and landlords request it to confirm you carry the coverage your contract requires.
The key point: a certificate is evidence, not coverage. It does not add anyone to your policy, and it does not give the person holding it any rights to make a claim under it. It simply says, "yes, this coverage is in force."
What an additional insured is
An additional insured is a party you actually add to your policy through an endorsement. Once added, that party gains certain protections under your policy for liability connected to your work or your relationship with them. A landlord added as an additional insured on a tenant's general liability policy, for example, can be defended and covered under that policy for claims arising from the tenant's operations.
That is a real transfer of risk — which is exactly why contracts so often require it, and why it cannot be granted by a certificate alone.
Why the distinction matters
- A certificate holder simply receives proof of your insurance. Adding someone as a certificate holder costs nothing and changes nothing about your coverage.
- An additional insured is genuinely covered, within the terms of the endorsement. This affects your policy and, potentially, your limits — so carriers have rules about who qualifies and how the endorsement is worded.
When a contract says "name us as additional insured and provide a certificate evidencing same," it is asking for both actions: the endorsement that grants coverage, and the certificate that documents it.
What to do when you get a request
Read the contract language carefully — it usually specifies exactly what is required, including whether the additional insured status must be "primary and non-contributory" or include a "waiver of subrogation." These phrases have real cost and coverage implications, and getting them wrong can put you in breach of contract or leave a gap.
The simplest path is to send us the requirement. We will confirm what your policy allows, arrange the correct endorsement where it is warranted, and issue a compliant certificate. You can start a COI request anytime, and if you are still shopping coverage, request a quote and we will build the policy around the contracts you actually need to satisfy.
Frequently Asked
Does a certificate of insurance give the holder any coverage?
No. A certificate is proof that a policy exists; it does not add anyone to the policy or grant them rights under it. Only an additional insured endorsement does that.
How do I actually add someone as an additional insured?
It is done through an endorsement to your policy, and eligibility and wording depend on the carrier and your contract. Send us the requirement and we will arrange the correct endorsement and issue the certificate.
Can every certificate holder be added as an additional insured?
Not necessarily. Additional insured status is typically reserved for parties with a genuine contractual relationship to your work, such as a client or landlord, and carrier rules apply.
This article is general information for business owners, not insurance or legal advice, and does not bind or alter coverage. Policy terms, eligibility, and pricing vary by carrier and state — confirm specifics with our licensed team before making decisions.