A certificate of insurance (COI) is a one-page document that proves a contractor's insurance policies are active on a given date and lists key limits, but it does not change or add coverage. Many contract requirements still need carrier endorsements, not just a COI checkbox. When a GC or vendor portal asks for proof, confirm whether they require Additional Insured, primary and noncontributory wording, or a waiver of subrogation. As an independent broker we help contractors in California and Texas get compliant faster. Existing clients get COIs often same day; new contractors are quoted the same business day and certificated right after binding.
What a COI is, and what it does not do
A certificate of insurance (COI) is proof that your insurance policies are active on a specific date and shows key limits and policy terms at a high level. It is a snapshot that helps a general contractor, owner, or vendor portal confirm you carry the insurance they require.
A COI usually shows your business name (the insured), the policy types (general liability, workers' compensation, auto, umbrella, and so on), the policy effective and expiration dates, key limits (for example, $1M per occurrence on general liability), the certificate holder information (who is requesting proof), and sometimes notes in the Description of Operations section.
What a COI does not do (this matters for compliance)
A COI does not rewrite the policy and does not create coverage that is not already in force. It typically does not add an Additional Insured by itself, change limits, exclusions, or policy terms, guarantee that a specific claim will be covered, or replace an endorsement when the contract requires one.
Already covered and need proof for a deadline? Existing clients can request a certificate fast.
Do not have the policy the GC is asking about? We quote General Liability fast for CA and TX contractors, often the same business day, and issue the COI right after binding.
Why GCs, owners, and vendor portals require COIs
COIs are used to manage risk transfer and to confirm you meet the minimum insurance requirements before you step on site. Common reasons you are asked for one include:
- You are onboarding to a GC or property manager vendor system
- A bid packet requires proof of insurance before award
- A contract requires proof before mobilization
- The GC wants to confirm your subs are compliant (common for general contractors)
Trades that run into COI requirements constantly include roofing contractors, general contractors, and plumbing contractors. If you are a GC collecting COIs from subs, see subcontractor insurance compliance.
Where COI requirements show up (COI vs endorsement) and what to verify
Step 1: Identify what the other party is actually asking for
Most requests fall into two buckets:
- Proof of active coverage and limits (a COI usually works)
- Policy term changes or special status (often requires endorsements)
Step 2: Verify the basics on the COI (quick checklist)
- Correct legal name of the insured (your entity name matches contracts and vendor portals)
- Correct certificate holder (legal name and address, exactly as provided)
- Policy dates (effective and expiration)
- Limits match the requirement (GL, Auto, WC, Umbrella if required)
- Carrier and NAIC details (many portals validate these)
- Job name and jobsite address if the GC or owner requires it in the description area
Step 3: Confirm endorsements when required (the big three)
Many contracts request these. The safest approach is to confirm what is required and whether an endorsement is needed.
- Additional Insured (AI): the GC or owner wants protected status under your liability policy for certain claims tied to your work. Learn more
- Primary and Noncontributory (PNC): they want your policy to respond first in certain situations, subject to policy wording and endorsements. Learn more
- Waiver of Subrogation (WOS): they want the insurer to waive certain recovery rights, when allowed and endorsed. Learn more
Important: A checkbox or note on a COI may not be enough if the contract requires an endorsement. Requirements vary by contract, project, and carrier.
Common mistakes that delay approval (and how to avoid them)
Wrong certificate holder name or address
Fix: Copy and paste the certificate holder exactly as provided.
Insured name does not match the contract or vendor portal
Fix: Use the legal entity name tied to the policy and your contract paperwork.
Missing jobsite address or project name
Fix: If the GC requests it, include it. Many portals reject COIs without it.
Limits do not match the requirement
Fix: Send the requirement line items with your request so we can match them correctly.
Assuming endorsements are automatic
Fix: If AI, PNC, or WOS are required, ask for them explicitly and provide the wording. Do not rely on assumptions.
Last-minute requests with no requirement language
Fix: Attach the insurance requirement page or paste the contract clause.
Subcontractor compliance gaps (GCs). If you are collecting COIs from subs, build a consistent checklist and verify endorsements when the GC requires them. See subcontractor insurance compliance.
How to request a COI fast (copy and paste checklist)
Speed comes from complete inputs. If we have the certificate holder details, job info, limits, and endorsement needs, we can move quickly. Provide:
- Certificate holder: legal name and mailing address
- Project or job name (if applicable)
- Jobsite address (if applicable)
- Required limits (GL, Auto, WC, Umbrella, etc.)
- Endorsements required: Additional Insured, Primary and Noncontributory, Waiver of Subrogation (and any special wording)
- Send-to emails (who needs it, plus any CC list)
- Deadline (bid due date or onboarding deadline)
Existing clients: submit here. New to us: COIs require active coverage first, so start with a quote.
Policies that show up on COIs, and how we help
Most COIs for contractors involve general liability, workers' compensation, and commercial auto, and larger projects may add umbrella or project property coverage. Common policies include:
- General Liability
- Workers' Compensation
- Commercial Auto
- Umbrella and Excess
- Tools and Equipment (Inland Marine)
- Builder's Risk (project property, when required)
We help contractors get from we need a COI to approved by translating requirements into the exact documents and wording needed. You can expect clear routing (COI requests for existing clients, quote flow for new business), compliance-first handling focused on the exact requirements and wording the GC or owner wants, and trade-aware guidance, since roofing, GC, and plumbing workflows are different. We serve California and Texas metros and surrounding areas as an independent broker.