Commercial insurance policy guides
A commercial insurance policy is decided as much by what it excludes as by the limit on the declarations. These source-cited guides cover limits and aggregates, sublimits, claims-made vs occurrence, coinsurance, replacement cost vs ACV, exclusions, additional insureds, duties after loss, and coverage gaps.
Last reviewed: May 26, 2026 by the BizLeaseCheck Editorial Team. General information, not insurance advice.
A policy is not just the declarations page. What you are actually covered for lives in the insuring agreement, the exclusions, and the endorsements.
Read guide Insurance guidePer-Occurrence vs Aggregate Limits ExplainedTwo numbers control how much your liability policy pays: the most for one claim, and the most for the whole policy period. Both can run out.
Read guide Insurance guideInsurance Sublimits ExplainedA sublimit is a cap inside a cap. Your policy limit may be $1M, but a sublimit can quietly cap a key peril at a fraction of that.
Read guide Insurance guideClaims-Made vs Occurrence Policies ExplainedWhether a policy is claims-made or occurrence decides which policy responds to a claim — and a gap when you switch can leave you uncovered.
Read guide Insurance guideCoinsurance and the Underinsurance PenaltyA coinsurance clause quietly penalizes you for under-insuring — even on a partial loss you fully expected to be covered.
Read guide Insurance guideReplacement Cost vs Actual Cash ValueHow your property is valued at a loss — replacement cost or actual cash value — can be the difference between being made whole and a depreciated payout.
Read guide Insurance guideCommon Commercial Insurance Policy ExclusionsCoverage is decided as much by what is excluded as by what is granted. These are the exclusions that most often leave businesses exposed.
Read guide Insurance guideAdditional Insured and Waiver of SubrogationLeases and contracts often require you to add the other party as an additional insured and waive subrogation. The contract promise is only as good as the endorsement.
Read guide Insurance guideDuties After Loss and Proof-of-Loss DeadlinesA covered claim can still be denied if you miss a post-loss duty. Notice and proof-of-loss deadlines are easy to blow and hard to undo.
Read guide Insurance guideDefense-Within-Limits ("Eroding") Policies ExplainedOn an eroding policy, every dollar your insurer spends defending you is a dollar less to settle the claim. The limit can run out before the loss is paid.
Read guide Insurance guideInsurance Cancellation and Nonrenewal ExplainedA policy can be cancelled midterm or simply not renewed. The notice you get — and the reasons allowed — are limited, and largely set by state law.
Read guide Insurance guideCommercial Flood Insurance and Coverage GapsFlood is almost always excluded from a standard property policy. For many businesses it is the single biggest uncovered risk.
Read guideCommercial Insurance Policy Analysis
A representative commercial insurance sample report — danger score 95/100, 8 red flags with verbatim evidence quotes, no signup needed.
Frequently asked questions
What should I check first in a business insurance policy?
Start with the declarations and insuring agreement, then the limits and sublimits, then the exclusions and endorsements, and finish with the conditions — including your duties after a loss. Coverage is decided as much by the exclusions as by the limits.
Why do sublimits and exclusions matter so much?
A high policy limit can hide a low sublimit (for cyber, water, or flood) or an exclusion that removes the coverage you most need. Those are the most common causes of surprise underinsurance.
Is this insurance advice?
No. These guides are general, educational information to help you read your own policy. They are not insurance advice or a coverage opinion. Confirm coverage and adequacy with a licensed insurance agent or broker, and read the actual policy.
Review it before you bind or renew
Upload the policy and endorsements. The report flags limits, sublimits, exclusions, claims-made and coinsurance traps, valuation, and the coverage gaps you still carry, each tied to a quote from your document.