Enter premiums, deductibles, and limits for three quotes. Adjust discounts, mileage, and claim likelihood assumptions. See the best fit with a clear scorecard instantly.
| Provider | Monthly premium | Deductible | Liability limit | Collision | Comprehensive | Discount | Add-ons |
|---|---|---|---|---|---|---|---|
| Alpha Mutual | $145.00 | $500 | $100,000 | $25,000 | $25,000 | 10% | Roadside, Rental |
| Beacon Auto | $132.00 | $1,000 | $50,000 | $20,000 | $20,000 | 5% | Rental |
| Cedar Coverage | $158.00 | $250 | $250,000 | $40,000 | $40,000 | 12% | Roadside, Rental, Glass |
Tip: In the form above, enter similar values for your real quotes to get an apples-to-apples comparison.
1) Gross annual premium
gross_annual = (monthly_premium + monthly_install_fee) × 12 + annual_policy_fee
2) Net annual premium (after discounts)
net_annual = gross_annual × (1 − discount_pct / 100)
3) Claim cost estimate (simple cap model)
coverage_cap = max(liability_limit, collision_limit, comprehensive_limit)
user_pays_if_claim = deductible + max(0, avg_claim − coverage_cap)
4) Expected annual out-of-pocket and total expected cost
expected_oop = claim_prob × user_pays_if_claim
expected_total = net_annual + expected_oop
5) Overall score (weighted, normalized)
Each category is scaled 0–100 across your quotes, then combined using your weights for cost, coverage, deductible, service rating, and add-ons.
Premium alone can mislead. This calculator estimates expected annual cost by combining net annual premium with expected out-of-pocket. Net premium includes monthly charges, installment fees, policy fees, and discounts you enter. Expected out-of-pocket uses your claim probability and claim amount, then applies each quote’s deductible and a coverage-cap check. The result is an “all-in” figure you can compare across quotes.
Coverage is summarized with a blended index from liability, collision, and comprehensive limits. To keep comparisons fair, very large limits are softly capped so one oversized number does not dominate. Higher limits increase the coverage score, while still letting cost and deductible influence the final ranking. If two providers are close in price, coverage differences can decide.
Deductibles shift risk from the insurer to you. A higher deductible may lower premium, but it increases what you pay when a claim happens. The deductible score rewards lower deductibles, and the expected out-of-pocket calculation converts that choice into dollars using your assumptions. If cash flow is tight, a lower deductible can improve resilience even if premium rises.
Price is not everything during a claim. The service rating input reflects reviews, claims handling, agent support, and digital convenience. Extras count benefits such as roadside, rental, glass, and gap coverage. Extras do not change the cost model directly, but they improve the value score when weights include them. Adjust weights to match priorities and see rankings change.
Run multiple scenarios. Try a higher claim probability, a larger average claim, or different discounts to see when a cheaper quote stops being best. The chart visualizes expected total cost beside overall score. Download CSV for spreadsheets and PDF for sharing with family or an advisor. Keep inputs consistent across quotes for an apples-to-apples comparison. Revisit the assumptions quarterly, especially after moving, buying a car, or adding drivers to your policy regularly.
Use the same drivers, vehicle, address, coverages, limits, and payment plan. Changing one element can move premium and deductible terms, which makes the comparison less reliable.
Start with a conservative baseline like 5% to 10% per year, then test higher and lower values. The goal is sensitivity, not prediction, so explore ranges that fit your driving habits and environment.
The model uses a simple cap to show when a large claim might exceed key limits. It’s a quick check, not a policy reading, so confirm real sublimits and exclusions in the contract.
Add-ons increase value scoring only. If you want cost impact, include the add-on price inside the premium or fees you enter so the net annual premium reflects the full bundle.
Scores normalize cost, coverage, deductible, service, and extras across your quotes, then combine them using your weights. A higher score means better fit under your chosen priorities and assumptions.
Yes. Divide net annual premium by 12 for an estimated monthly premium, and keep expected out-of-pocket as a yearly risk reserve. For strict budgeting, treat the reserve as a savings line item.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.