Coinsurance Calculator

Coinsurance Calculator

Understand how coinsurance affects your insurance coverage and potential penalties for underinsuring your property.

The cost to rebuild your property at current prices
The percentage of property value you must insure to avoid penalties
The amount of insurance coverage you have purchased
The amount you must pay before insurance coverage begins
80% Adequate Coverage

Calculation Results

Required Coverage
$400,000.0
Your Coverage
$400,000.0
Coverage Status
Adequate
Coverage Gap
$0.0
Penalty Percentage
0%
Total Risk
$1,000.0

What is Coinsurance? +

Coinsurance is a clause in property insurance policies that requires you to insure your property for a minimum percentage of its replacement value. If you don't meet this requirement and suffer a loss, your insurance company may reduce your claim payment.

For example, if your policy has an 80% coinsurance clause and your property is worth $500,000, you must insure it for at least $400,000 to avoid penalties.

How the Penalty Works +

The coinsurance penalty is calculated using this formula:

Penalty = Loss Amount × (Required Coverage ÷ Actual Coverage)

If your actual coverage is less than the required amount, your claim payment will be reduced proportionally. The penalty percentage shows how much your claim would be reduced for any loss. Total risk includes your deductible plus any potential coinsurance penalty for a $100,000 loss scenario.

Insurance Terms Glossary +

Replacement Value
The cost to rebuild your property at current construction prices
Coinsurance Clause
A policy provision requiring minimum insurance coverage as a percentage of property value
Coinsurance Penalty
A reduction in claim payment when coverage is below the required minimum
Actual Cash Value
Replacement cost minus depreciation
Deductible
The amount you must pay out-of-pocket before your insurance coverage begins

Disclaimer: This calculator is for educational purposes only. Actual insurance calculations may vary based on your specific policy terms and conditions. Please consult with your insurance agent or broker for professional advice regarding your coverage.