A deductible is an amount or formula used in a policy's claim calculation. It is not always a once-a-year threshold: property and auto deductibles commonly apply to a covered loss, while many health plans accumulate specified spending during a plan year. The contract identifies which model applies.
Four deductible models to distinguish
| Model | Question to answer from the document |
|---|---|
| Per-loss dollar amount | Does it apply separately to each covered event and coverage? |
| Percentage of insured value | Which insured value and named event determine the calculation? |
| Annual individual / family | Which services accumulate, and is the family deductible embedded or aggregate? |
| Waiting period or elimination period | Is the obligation measured in days rather than dollars? |
Transparent scenario math
For a simplified property example, assume a covered loss is valued at $8,000 and the applicable deductible is $1,000. The preliminary arithmetic is $8,000 minus $1,000 = $7,000. That is not a claim estimate because limits, depreciation, sublimits, other insurance, and policy conditions are not modeled.
For a premium comparison, the worksheet above adds annual premium and a user-selected number of modeled deductible events. It deliberately does not predict event frequency. A lower output is only a result of the entered assumptions.
What to copy before choosing a deductible
- Exact deductible amount or percentage
- Coverage part and event to which it applies
- Whether multiple deductibles can affect one loss
- Premium for each matched option
- Any separate health copay, coinsurance, or out-of-pocket maximum
- Available cash the household chooses to reserve, without treating this page as financial advice
Health-plan boundary
Deductible, copayment, coinsurance, and out-of-pocket limit are different fields. Some covered services may be treated differently before the deductible, and network or authorization rules can affect cost. Use the Summary of Benefits and Coverage and plan documents rather than applying an auto or homeowners example to health insurance.
Questions that expose hidden assumptions
- Does the deductible apply before or after a sublimit?
- Is it subtracted from the settlement or paid separately?
- Does a percentage deductible use the coverage limit or loss amount?
- What date resets an annual deductible?
Record assumptions next to the result
A scenario number is useful only when its assumptions remain visible. Save the premium period, deductible trigger, event count, and omitted fields next to the result. Do not reuse a property scenario for health coverage or treat a modeled event count as a forecast.
If two options use different networks, limits, exclusions, or valuation methods, the calculator cannot normalize them. Mark the result “not comparable” until those contract fields match. This prevents a precise-looking total from hiding a larger coverage difference.
Source basis: NAIC explains deductibles as part of cost sharing; HealthCare.gov separately defines deductible, coinsurance, copayment, and out-of-pocket limit. The policy or plan document controls.