Why is a certificate of insurance required?

If a landlord, general contractor, venue, or platform is asking you for a certificate of insurance, the requirement is contractual: they’ve agreed to let you operate on their property or under their name only if you carry specified coverage, and the certificate is how they check. Why counterparties demand the coverage itself — the limits, the liability math — is its own question. This page covers the mechanics: what the document is, how to produce one fast, and the one thing it can never do.

What a COI is and who issues it

A certificate of insurance is a standardized summary — most often the ACORD 25 form — showing your insurer, policy numbers, coverage lines, limits, and effective dates. Three mechanics matter:

• Your insurer or agent issues it, not you and not the requester. If someone hands you a form to fill out yourself, that’s not a COI.
• It’s free. The policy is what costs money; certificates are issued at no charge, in any quantity. Digital-first carriers generate them self-serve in minutes; traditional agents typically turn them around same-day.
• It’s a snapshot. The certificate evidences coverage as of its issue date, through the policy expiration shown on it.

If you’re being asked for a COI and don’t yet have a policy, the real task is buying coverage — the certificate follows automatically at purchase.

What the requester does with it

On the other side of the request is a compliance workflow, not curiosity. The certificate holder files your COI, checks the limits and lines against the contract, diaries the expiration date, and expects a renewal certificate each term. Businesses that hire many vendors run this at scale through tracking services or portals — which is why a certificate that doesn’t match the contract’s requirements gets bounced by a reviewer who has no discretion to waive anything. Match the requested limits, the exact legal names, and any endorsement boxes before you submit, not after.

The caveat that matters: a COI confers no coverage rights

The ACORD form states on its face that the certificate is issued as a matter of information only and confers no rights upon the certificate holder. State law says the same thing with teeth: New York’s certificate statute provides that a certificate cannot “amend, extend, or alter the coverage” of the policy and confers no rights beyond what the policy itself provides.

The practical consequences run in both directions:

1. If you’re collecting COIs from vendors or subs, the paper alone doesn’t protect you. If you want rights under the vendor’s policy — a defense if you’re sued over their work — you need additional insured status, which lives in a policy endorsement, not in the certificate.
2. If you’re supplying the COI, handing it over creates no new obligations to the holder — but misrepresenting coverage on one is another matter entirely, and states regulate certificate contents for exactly that reason.

When the requester demands special wording

Requesters sometimes push for custom certificate language — guarantees of notice, expanded descriptions of coverage, terms the policy doesn’t actually contain. That request is legally a dead end: New York’s statute, like similar laws in other states, prohibits requiring a certificate to include “terms, conditions or language of any kind, including warranties or guarantees” that the referenced policy does not expressly provide. The correct response is to route the demand to your agent: if the counterparty needs a right, it gets added to the policy by endorsement, and then the certificate can truthfully report it.

Questions people actually ask

What does a certificate of insurance cover? Nothing — and the phrasing of the question is the trap. The certificate covers nothing; it describes what the underlying policy covers. If the policy lapses or excludes the loss, the certificate is irrelevant.

How much does a certificate of insurance cost? Certificates are free. If you’re being quoted a price “for a COI,” you’re being quoted for the insurance policy behind it.

How long is a certificate of insurance good for? Until the earliest expiration date shown on it — typically your policy’s renewal date. Requesters expect a fresh certificate each policy term.

Who provides a certificate of insurance? The insured party’s carrier or agent issues it, and the insured requests it. If you’re hiring a vendor, you ask the vendor, who asks their insurer.

Sources are linked below. Certificate rules vary by state; New York’s statute is quoted as a concrete example of the widely adopted rule that certificates confer no rights.