June 4, 2026
The certificate of insurance, explained — and how to get one in minutes
A certificate of insurance (COI) is a one-page summary proving your business carries the coverage someone demands before they'll work with you — landlord, general contractor, event organizer, enterprise client. It lists your insurer, policy numbers, coverage types, limits and effective dates.
Two things about COIs surprise first-time buyers: they should be free, and with the right insurer they take minutes, not days. Both facts decide contracts — a vendor slot or subcontract often goes to whoever produces the certificate first.
Who asks for COIs, and what they're checking
Whoever hands you the requirement is protecting themselves from your accidents. They check four things: the coverage type (almost always general liability, sometimes workers' comp and commercial auto too), the limits (typically $1M per occurrence / $2M aggregate), the dates (covering the full contract period), and the named insured matching your legal business name exactly.
- Landlords — before lease signing, renewed annually
- General contractors — from every subcontractor, often per project
- Event organizers and markets — from every vendor, sometimes naming the event as additional insured
- Enterprise clients — procurement runs COI checks before onboarding any vendor
- Cities and licensing boards — some trade licenses require filed proof of coverage
How to get one (and how fast each insurer is)
If you already have a policy, your insurer issues COIs at no charge. The speed difference is real and it's the one place the digital-first carriers genuinely beat the incumbents:
- No policy yet? The realistic fast path is a digital carrier quote-and-buy — policy and COI inside an hour. Our reviews cover how those carriers then behave at claim time, which matters more than the onboarding sparkle.
| Insurer | COI route | Typical speed |
|---|---|---|
| NEXT Insurance | Self-service in app/portal, unlimited | Instant — its single best-reviewed feature |
| Thimble | Generated with purchase, even for one-day policies | Instant |
| biBERK | Online portal | Same day |
| Coterie | Via your agent or portal | Same day |
| Hiscox | Online or by phone | Fast — COI delivery is a praised feature |
| The Hartford | Portal or via agent | Same day to a few days |
| Progressive Commercial | Phone/portal | Same day for auto certificates |
| Simply Business | Through the issuing carrier | Depends on the carrier matched |
What a COI costs
Nothing. Insurers issue certificates free, in unlimited quantities. If you're being charged for a certificate, something's off: either a third-party "COI service" is inserting itself unnecessarily, or an agent is charging a service fee that competitive agents don't. The only legitimate costs are the policy itself and, occasionally, a premium adjustment if the certificate holder demands higher limits or an endorsement you don't have.
Certificate holder vs additional insured — the trap
A certificate holder just receives proof you're insured. An additional insured is added to your policy and can claim under it — a much bigger ask, common in construction subcontracts and event contracts.
The trap: a contract demands additional-insured status, you send a plain COI, and it gets rejected days before the deadline — because additional-insured status requires an endorsement to the policy, not just a different name on the certificate. Endorsements can carry a small premium charge and need the insurer to process them. If your contracts routinely demand this, it's worth checking how an insurer handles endorsements before buying — it's a frequent friction point in the complaint records we track.
Common COI rejections
Procurement teams bounce certificates for predictable reasons:
- Business name mismatch — the certificate says your personal name, the contract says your LLC
- Limits below the contract's requirement ($500k certificate vs $1M requirement)
- Policy expires mid-contract — renew first, then send the certificate
- Missing coverage line — contract wants GL + workers' comp + auto; certificate shows GL only
- Additional-insured endorsement requested but absent (see above)
Common questions
How much does a certificate of insurance cost?
Nothing — insurers issue COIs free and in unlimited quantities. You pay for the underlying policy, not the paperwork. Be skeptical of anyone charging certificate fees.
How fast can I get a COI?
If you have a policy: minutes from digital carriers' self-service portals (NEXT and Thimble issue instantly), same-day from most others. If you don't have a policy: digital carriers can quote, bind and issue the certificate within the hour.
Does a COI prove the policy is still active?
Only as of its issue date — policies can be cancelled after a certificate was issued. That's why certificate holders ask for current certificates each year or project, and big GCs use COI-tracking services.
What's the difference between certificate holder and additional insured?
A certificate holder merely receives proof of your insurance. An additional insured is endorsed onto your policy and gains rights to claim under it. The second requires a policy endorsement — plan extra days and possibly a small premium charge for it.
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Disclosure: some links to insurers may be affiliate links — if you get a quote through them we may earn a commission, at no cost to you. That never changes the data: complaint figures, ratings and review themes are reported as published, sources cited and dated. We are not an insurance agent or broker, and nothing here is advice. How we score