The 70% Limit on an 80% Coinsurance Form
Cedar Point Retail LLC owns a single building insured on a commercial property form. The building's replacement cost is $1,000,000, but the insured purchased a $700,000 limit to hold premium down, rejecting the agent's written recommendation of a $1,000,000 limit at the last two renewals. The form carries an 80% coinsurance clause, replacement cost valuation on the building, a $5,000 deductible, a $50,000 business income limit with a 72-hour waiting period, and no agreed value or blanket endorsement. In June a fire causes $260,000 in replacement cost damage, of which $200,000 represents actual cash value after $60,000 of depreciation. The building is repaired and the insured submits the full $260,000 bill, arguing that the loss is well under the $700,000 limit.
1. Calculate the building payment and explain why the insured's argument about the limit fails.
Read the worked answer
The coinsurance clause is a condition of recovery, not a cap.
Step 1 - Required limit: 80% x $1,000,000 replacement cost = $800,000.
Step 2 - Ratio: $700,000 carried / $800,000 required = 0.875.
Step 3 - Apply to the loss: $260,000 x 0.875 = $227,500.
Step 4 - Deductible: $227,500 - $5,000 = $222,500, which is below the $700,000 limit, so the limit does not constrain the payment.
The insured's reasoning mistakes the limit for the measure of recovery. Coinsurance tests whether the limit bore a stated relationship to the value at risk at the time of loss; because it did not, the insured shares the loss. The insured is a coinsurer for the 12.5% shortfall - about $32,500 out of pocket beyond depreciation and deductible.
2. If the policy had been written on an actual cash value basis instead of replacement cost, how would the payment change, and does depreciation interact with the coinsurance calculation?
Read the worked answer
On ACV valuation the coinsurance penalty is applied to the ACV loss, not the replacement cost loss.
- Calculation: $200,000 x 0.875 = $175,000, less the $5,000 deductible = $170,000.
- Depreciation is not the penalty. The $60,000 of depreciation is a separate reduction; the 12.5% coinsurance shortfall is an additional reduction. Mixing the two up is the most common error in these claims.
- Practical caution: an insured who chooses ACV often also chooses a lower limit "because ACV is cheaper," which compounds the penalty. The valuation basis and the limit must be examined together, and both are tested against values at the time of loss, not at inception.
On these numbers, ACV valuation plus a short limit would leave the insured absorbing roughly $90,000 of a $260,000 replacement cost loss.
3. What should the agent recommend now, and what happens to the business income claim for the first three days after the fire?
Read the worked answer
Underwriting and design fixes:
- Raise the limit to at least $800,000 - and preferably to full $1,000,000 replacement cost - since 80% coinsurance on a $1,000,000 building requires $800,000 just to avoid a penalty.
- Agreed value endorsement suspends the coinsurance clause for the policy period, provided the insured submits an acceptable statement of values. It does not cure chronic underinsurance, but it removes the surprise penalty.
- Annual value re-reporting with a peak-season or inflation-guard feature, because construction costs move faster than renewals.
- Document the recommendation. The agent already recommended the adequate limit twice; written documentation of the rejection is the insured's best defense against an errors and allegations claim.
Business income: the 72-hour waiting period means the first three days of lost income after the fire are not covered. Coverage then runs for the period of restoration, subject to the $50,000 limit - which, on a retail operation, is likely to be exhausted long before the building is rebuilt.