Insurance Claim Payout Formula: Deductible, Reimbursement and Limits
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A transparent claim model separates eligible cost, excluded cost, deductible or excess, reimbursement share, and payout cap. The order can matter, and the policy wording—not a generic calculator—determines the real calculation.
Five components in a simplified payout
- Total loss or bill
- The starting event cost.
- Eligible covered cost
- The amount remaining after policy definitions, valuation, and exclusions are applied.
- Deductible/excess
- The covered amount the policyholder absorbs under the relevant section.
- Reimbursement share
- The percentage of the applicable covered amount the insurer pays.
- Payout limit
- The relevant cap after other arithmetic, subject to actual wording.
Excluded cost stays with the policyholder and does not consume a deductible in this model.
Two common arithmetic orders
Deductible first: payment before cap = max(0, eligible cost − deductible applied) × reimbursement rate.
Share first: payment before cap = max(0, eligible cost × reimbursement rate − deductible applied).
At 2,000 eligible cost, 500 deductible, and 80% reimbursement, deductible-first pays 1,200; share-first pays 1,100. Do not guess—use the insurer’s wording or example.
Apply the relevant limit and basis
A limit can apply per item, incident, claim, condition, section, trip, year, policy period, or lifetime. The calculator supports one numeric per-claim or period limit per quote. A zero entry suppresses the numeric cap in the model; it does not erase real sublimits.
For multiple claims, an aggregate period cap is reduced by earlier modeled payments. A per-claim cap resets each time.
Eligible cost is not always the invoice or repair estimate
Replacement cost, actual cash value, depreciation, agreed value, market value, benefit schedules, reasonable-and-customary charges, betterment, salvage, underinsurance, average clauses, or approved-provider rates can change the eligible amount before this simplified formula starts. Verify that amount independently.
Worked claim examples
Below deductible: 300 eligible cost with a 500 deductible produces zero payment and 300 policyholder claim cost.
Deductible then 80%: 5,000 eligible cost less 500, multiplied by 80%, gives 3,600 before limit. With 200 excluded cost, policyholder claim cost is 1,600.
Period deductible: two 1,000 claims, a 500 period deductible, and 100% reimbursement pay 500 on the first and 1,000 on the second.
Per-claim cap: if the pre-limit payment is 1,500 and the per-claim cap is 600, modeled payment is 600.
Why this is not a claim estimate
The tool cannot determine whether a loss is covered, whether duties and conditions were met, the eligible valuation, overlapping coverage, contribution, subrogation, depreciation, fraud review, documentation, repair method, network arrangements, tax, law, or complaint outcome. It shows arithmetic only after you choose simplified inputs.
Audit both quote formulas side by side
Use the Insurance Quote Comparison & Deductible Break-Even Calculator to select the order independently for each quote and download the sequential claim ledger. Compare the result with a written insurer example.
Frequently asked questions
Is the deductible subtracted before coinsurance?
Sometimes, but not universally. The policy wording controls; the calculator lets each quote use deductible-first or share-first arithmetic.
Does an exclusion reduce the deductible?
Not in this simplified model. Excluded cost is never reimbursed or used to satisfy the modeled deductible; actual wording can be more complex.
Does this hub rank insurers?
No. It never names or ranks carriers, collects leads, or claims that a lower modeled cost is a better policy.
Does it predict whether I will claim?
No. Use separate transparent scenarios; no claim probability or expected loss is estimated.
Can I rely on a comparison-site summary?
Use it to discover quotes, then verify every material term in the insurer quote and policy documents.
Sources and review status
- NAIC — How insurance works (United States)
- NAIC — Homeowners insurance (United States)
- MoneyHelper — What is insurance excess? (United Kingdom)
- Financial Consumer Agency of Canada — Determining insurance needs (Canada)
- ASIC Moneysmart — Insurance (Australia)
- ASIC Moneysmart — Choosing home insurance (Australia)
Sources and model boundaries were checked on 2026-10-07. CalculatorGeek Editorial Team reviewed and approved the full finance and insurance package on 2026-10-08. The cited organizations supplied source material; they did not review or endorse this CalculatorGeek package. Product terms, policy forms, laws, regulatory guidance and rates can change; current written documents and applicable authorities control.
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