False certainty to remove

  • Applying the percentage to claim size.
  • Comparing premiums with different coverage limits.
  • Assuming flood is included in standard homeowners insurance.
  • Choosing a deductible that requires borrowing after loss.

$500,000 dwelling coverage

1% wind deductible: $5,000

2% wind deductible: $10,000

Standard all-peril deductible: $1,500

$700 annual premium saving does not remove the $8,500 incremental wind exposure

Separate deductibles may apply to named hazards

A range is more useful than one precise-looking forecast when an input is uncertain.

Test the assumptions that can move the answer

Find the base

A percentage deductible can be based on dwelling limit or another policy value. Convert it to dollars before comparing quotes.

This decision belongs in The Real Cost of Homeownership. Use HOA Fees and Special Assessments: Costs and Reserve Risk to check the next assumption, then test the numbers in the Homeownership Cost Calculator.

Separate hazards

Wind, hurricane, earthquake, flood and standard perils may use different policies or deductibles. A single “deductible” field can conceal the largest exposure.

Coverage limits and exclusions

Premium comparisons require identical dwelling, personal property, loss-of-use, liability and endorsement terms.

Liquidity and mitigation

A high deductible requires accessible cash. Roof age, shutters, alarms or other mitigation may affect eligibility or pricing but should be evaluated on their own cost.

Scenarios worth testing

Premium savings are expected cash-flow benefits; the deductible is a possible cash shock. Compare several claim scenarios and keep catastrophe deductibles separate when they use different formulas.

Policy evidence for the risk comparison

  • Annual premium quote at each deductible option.
  • Separate wind, flood, earthquake or percentage deductibles.
  • Cash reserve available without new high-cost borrowing.
  • Convert every deductible to dollars.
  • Map each deductible to the covered hazard.
  • Match limits and endorsements across quotes.
  • Compare annual premium difference with incremental exposure.
  • Reserve enough cash for the largest plausible applicable deductible.

Stress-test the uncertain inputs

Homeownership Cost Calculator

Put the mortgage beside the carrying costs a listing price cannot show.

Questions this decision usually raises

Can multiple deductibles apply to one event?

Policy wording and cause of loss control; ask the licensed insurer or agent for examples.

Is a higher deductible always better for small claims?

It reduces premium and discourages small claims, but cash capacity and catastrophe exposure remain.

Should deductible be in the homeownership calculator?

Include the expected cost as a scenario and keep the full cash reserve separate.

Evidence and assumptions to revisit

This page explains a calculation, not a personal recommendation. Contract rules and consumer protections vary by product and jurisdiction. Check the current agreement and official guidance before acting.