Practical guide
Understanding coverage gap estimate — two-scenario comparison
Everyday editorial team · GEOINNOVATION CO., LTD · Published · Updated
What this calculation is for
A coverage-gap check compares a replacement need with insurance limits and money reserved for a loss. It can highlight underinsurance, but cannot decide whether a policy is suitable or whether a specific claim will be covered.
How the method works
Replacement needs are projected using the entered inflation and review period, then compared with coverage, deductible assumptions and available reserves. Verify each result label because a coverage limit, a deductible and a cash reserve are not interchangeable forms of protection.
A worked example
If rebuilding is estimated at $400,000 but a policy limit is $300,000, a $10,000 cash reserve does not eliminate the remaining replacement exposure. An insurer’s valuation and settlement terms can differ from the estimate.
Assumptions and real-world differences
Actual-cash-value settlements, exclusions, sublimits, coinsurance penalties, flood or earthquake coverage and policy endorsements are not assessed. A budgeted replacement value is not a professional appraisal or a binding insurer valuation.
Building two independent scenarios
Scenario A and Scenario B each have a complete set of inputs for this coverage gap estimate calculation. Change several inputs in B when comparing genuinely different plans, then inspect the B-minus-A headline difference and the detailed rows. When multiple inputs change, the total difference cannot be attributed to just one of them.
Reproduce this tool’s example
These fixed example inputs are independent of edits you make above. Enter them in this tool to reproduce the result, then replace them with your own assumptions.
- Scenario A — Estimated replacement value
- 350,000 $
- Scenario A — Current coverage limit
- 300,000 $
- Scenario A — Deductible
- 2,500 $
- Scenario A — Additional cash reserve
- 10,000 $
- Scenario A — Annual replacement-cost increase
- 3 %
- Scenario A — Years until review
- 3 years
- Scenario B — Estimated replacement value
- 438,000 $
- Scenario B — Current coverage limit
- 300,000 $
- Scenario B — Deductible
- 2,500 $
- Scenario B — Additional cash reserve
- 10,000 $
- Scenario B — Annual replacement-cost increase
- 3 %
- Scenario B — Years until review
- 3 years
Scenario B result: $168,614.43
Scenario A: $72,454.45. Estimated future coverage gap.
- Scenario A main result: $72,454.45
- Scenario B main result: $168,614.43
- Numeric difference (B − A), in result units: 96,159.98
Frequently asked questions
- Does the result mean a claim will be paid?
- No. Coverage depends on the policy wording, cause of loss, limits and claim assessment.
- Is market value the same as replacement cost?
- No. Land, location and market demand affect sale value differently from the cost of rebuilding.
- Why is this different from the one-factor comparison?
- The one-factor tool changes only estimated replacement value. This version lets all model inputs differ, so it is more flexible but does not isolate the effect of any single change.