Texas Personal Lines Coinsurance Practice Questions

Coinsurance questions combine a formula with a legal scope check. The common property formula penalizes underinsurance by paying only the proportion of a covered loss that the carried limit bears to the required amount. But a calculation is appropriate only if a valid coinsurance clause applies to that property and peril. Texas Insurance Code §2002.005 restricts certain clauses for fire losses and identifies exceptions; a practice item should not silently impose a commercial-style penalty on every homeowners policy.

Question 1: Underinsured eligible property

Assume the policy is a valid property contract with an enforceable 80% coinsurance clause for this class of property and fire loss. Covered property is valued at $500,000 at the time of loss. The insured carries $200,000. The covered loss is $100,000, and the deductible is $1,000. What is the simplified payment under the standard formula?

The ratio is below 1.00 because the insured carried half of the required $400,000. The clause reduces the covered loss to half before applying the deductible. This is an assumed valid clause scenario. For Texas residential fire coverage, do not jump to this result without checking §2002.005 and any specific statutory or commissioner-authorized exception.

Question 2: Adequate limit means no formula reduction

A valid 80% coinsurance clause applies to eligible property valued at $250,000. The insured carries $210,000, and the covered loss is $40,000 with a $2,000 deductible. What is the simplified payment?

Step 1: calculate the requirement from the stated coinsurance percentage, not automatically 100% of property value. Step 2: compare the carried limit with that required amount. Since $210,000 is greater than $200,000, no penalty applies and the ratio is 1.00. Step 3: subtract the deductible. The payment is $38,000, subject to the contract and applicable limits.

Question 3: A small loss still uses the ratio

A valid 90% coinsurance clause applies to eligible property worth $1,000,000. The insured carries $450,000. A covered loss is $20,000 and the deductible is $500. No exception or waiver is stated. What is the simplified payment?

A coinsurance penalty can apply to a partial loss when a valid clause is in force; it is not reserved for total losses. But the question must first establish that the clause is legally part of this risk. For an ordinary Texas homeowners fire claim, the statutory restriction means the legal check may change the answer before you perform the ratio calculation.

Question 4: Loss exceeds the policy limit

A valid 80% clause applies to property worth $500,000. The insured carries $400,000 and sustains a covered $600,000 loss. The deductible is $5,000. What is the maximum payment under the formula and limit?

Step 1: required insurance is $400,000. Step 2: the carried $400,000 meets it, so ratio equals 1.00. Step 3: the covered loss less the $5,000 deductible is $595,000. Step 4: compare with the $400,000 limit; the policy directs payment of the lesser amount, so payment is $400,000. This follows the stated standard form wording, which makes the limit a cap after the formula.

Question 5: Texas private dwelling and the statutory restriction

A candidate sees a Texas homeowners policy with a $400,000 dwelling limit and a fire loss. Without reading any endorsement or checking the property class, the candidate assumes an 80% coinsurance clause automatically cuts the claim because the home’s estimated replacement cost is $600,000. Which statement is best?

This is the Texas nuance. Section 2002.005(a)–(b) generally prohibits and voids specified fire coinsurance clauses for covered classes. Subsection (c) permits clauses for certain marketing, shipping, storage, or manufacturing commodity products. Subsection (d) allows an insured option for some other classes—excluding a private dwelling and specified retail stock—when a premium reduction is allowed. Subsection (e) authorizes commissioner orders for windstorm, tornado, and hail coinsurance clauses on any property class. Read the exact section and policy before applying the formula.

Question 6: Windstorm clause and a valid order

A property policy covers windstorm and includes a coinsurance clause authorized for this class and peril by the applicable commissioner order. The declarations state an 80% requirement. Property value is $200,000; the insured carries $120,000; covered wind damage is $50,000; and the deductible is $1,000. Assume the clause’s formula follows the standard wording. What is the simplified payment?

This scenario shows why the legal scope and the arithmetic should remain separate. The question establishes a valid authorized clause, so apply its formula. In a real file, verify which order and rule apply to the particular policy, property, and peril. The fact that a windstorm clause can be authorized does not make every fire coinsurance clause valid.

Do not confuse property coinsurance with health coinsurance

In property insurance, coinsurance often refers to a condition requiring insurance at a specified percentage of property value, with a penalty if the insured carries less than required. In health insurance, coinsurance usually means the member’s percentage share of a covered allowed charge after a deductible. These are different calculations. The Texas Personal Lines P&C outline’s property concepts use the property-insurance meaning; do not import a medical-plan copayment example.

For a property clause, the basic formula is: (limit carried ÷ required limit) × amount of covered loss, then subtract the deductible, and pay no more than the applicable limit. The TDI-approved commercial property form example states those steps. But a formula in a form does not establish that the clause is legally valid for every insured class in Texas. Section 2002.005 must be checked first.

Pearson’s current outline includes coinsurance as a tested concept. TDI’s home insurance guide also cautions that many companies require a home insured to at least a stated proportion of replacement cost, but that consumer advice should not be confused with a fire-policy coinsurance penalty in a specific claim. Adequate limits matter even where no clause applies: a policy limit may still be too low to cover a total loss.

The property value used in the formula also requires care. A policy may specify replacement cost, actual cash value, or another valuation basis for coinsurance. Do not use a sale price that includes land when the contract measures the insured building, and do not include property the policy instructs the adjuster to exclude from the valuation. The TDI sample form expressly addresses certain foundations and debris costs. Use the stem’s stated value basis and the policy’s definition; the appraisal of value is separate from the arithmetic.

If more than one policy insures the same property, do not automatically add all limits into the numerator. The clause and other-insurance provisions govern which insurance counts and how payments are shared. Likewise, the coinsurance ratio is not a deductible, and it is not the insured’s health-plan share. A correct calculation begins with the coinsurance percentage and amount required, then compares applicable limits and covered loss under the actual wording.

Texas law makes this a two-part exam issue. A pure calculation question should tell you that a valid coinsurance provision applies. A law question may instead ask whether a fire policy can include such a clause for a private dwelling, retail stock, or another property class. Section 2002.005 contains prohibitions and exceptions, and subsection (e) permits a commissioner order for wind, tornado, or hail clauses. Do not answer the legal question solely by recalling an 80% formula.

A useful practice rule is: define the property class, peril, policy type, and clause validity before calculating. If the question is purely a formula problem, it should explicitly state that the clause is valid and applicable. If it is a Texas-law question, test the statutory exception. That two-part approach prevents correct arithmetic from producing a legally wrong answer.