About the Home Insurance Calculator
This home insurance calculator gives a quick estimate of a homeowners (HO-3 style) policy premium. Premiums are priced mainly on dwelling coverage, the cost to rebuild your home, multiplied by a rate per $1,000 of coverage that depends on your location, construction and claims history. The calculator then applies a deductible adjustment, any surcharge and discounts, and adds optional endorsements.
It is useful when budgeting for a home purchase, checking whether a renewal quote is reasonable, or seeing how much a higher deductible or bundling discount could save. It also lays out the standard coverage limits (other structures, personal property and loss of use) that usually follow from the dwelling amount.
The rate per $1,000 and deductible factors are assumptions you can change; they vary widely by state and insurer. Flood and earthquake damage are excluded from standard policies and need separate coverage. Always get real quotes before you buy.
With the default inputs, the estimated yearly premium is $2,100.00. Change any value above to recalculate instantly.
How to use the home insurance calculator
- 1Enter the cost to rebuild your home (from a quote, appraisal or a local cost-per-square-foot estimate).
- 2Enter a rate per $1,000 — use a recent quote for your area if you have one.
- 3Choose a deductible and add any surcharge or discounts you qualify for.
- 4Add yearly endorsements such as water backup coverage.
- 5Compare the premium across deductibles in the chart.
Formula and method
The base premium is dwelling coverage A divided by 1,000 and multiplied by the rate per $1,000, R. A deductible factor F_d adjusts it relative to a $1,000 deductible (higher deductibles lower the premium). Surcharges S (for past claims or an older roof) raise it and discounts D (bundling, security systems, new roof) lower it, then yearly endorsements E are added.
Coverage limits follow common HO-3 conventions: other structures at 10% of dwelling, loss of use at 20%, and personal property at the percentage you choose (often 50%–70%). The deductible factors are approximations; insurers publish their own.
- A
- Dwelling coverage (rebuild cost)
- R
- Rate per $1,000 of dwelling coverage
- F_d
- Deductible factor (1.00 at $1,000)
- S, D
- Surcharge and discount percentages
- E
- Yearly endorsement costs
Worked examples
$350k rebuild cost at $6 per $1,000
$350,000 ÷ 1,000 × $6 gives a $2,100 base premium. With a $1,000 deductible and no adjustments, that is the yearly premium, $175 a month. Standard limits would be $35,000 for other structures, $175,000 for belongings and $70,000 for loss of use.
Larger home with bundle discount and $2,500 deductible
The base premium is 500 × $4.20 = $2,100. A $2,500 deductible takes about 10% off ($1,890), a 10% bundle discount brings it to $1,701, and $150 of endorsements makes $1,851 a year.
Recent claim and a low deductible
A $750 base premium rises 5% for the $500 deductible ($787.50) and another 20% for a recent claim, giving $945 a year.
Frequently asked questions
How much homeowners insurance do I need?+
Insure the dwelling for its full replacement cost — what it would cost to rebuild at today’s labor and material prices — not its market value, which includes land. Lenders require at least enough coverage to protect the loan.
How much does homeowners insurance cost per month?+
It depends heavily on location, rebuild cost and claims history. Divide the yearly premium by 12; for many average homes that is roughly $100–$250 a month, but coastal and wildfire areas can cost several times more.
Does a higher deductible lower my premium?+
Yes. Moving from a $1,000 to a $2,500 deductible often cuts the premium by around 10%, though the exact credit varies by insurer. Only choose a deductible you could pay from savings after a loss.
Does homeowners insurance cover floods?+
No. Standard homeowners policies exclude flood damage. Flood coverage comes from the National Flood Insurance Program (NFIP) or a private flood insurer, and lenders require it in FEMA high-risk flood zones.
What is the difference between replacement cost and actual cash value?+
Replacement cost pays to repair or replace with new materials without deducting depreciation. Actual cash value subtracts depreciation, so payouts are lower, especially for older roofs and belongings.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.