Enter your details
Example data table
| Scenario | Assets | Limit | Deductible | Crime index | Security | Term |
|---|---|---|---|---|---|---|
| Apartment electronics | $18,000 | $18,000 | $500 | 125 | Self alarm + tracking | 12m |
| Retail shop inventory | $60,000 | $55,000 | $1,500 | 145 | Monitored + CCTV + locks | 12m |
| Household mixed items | $25,000 | $25,000 | $750 | 95 | CCTV + safe | 24m |
Formula used
This estimator builds an annual premium rate from a base rate tied to the crime index, then applies multipliers and credits:
- Base rate: derived from crime index and clamped to a reasonable range.
- Multipliers: property type and contents type adjust exposure.
- Surcharges: prior claims and item count can increase the rate.
- Credits: security discount and deductible credit reduce the rate.
Annual premium (before tax) = CoverageLimit × FinalRate + PolicyFee
Premium for term = Annual premium × (TermMonths / 12)
Premium incl. tax = Premium for term × (1 + TaxRate)
How to use this calculator
- Enter your total asset replacement value and pick a target coverage percentage.
- Optionally set an exact coverage limit if your insurer caps limits.
- Choose deductible, crime index, and item count to reflect your situation.
- Select property and contents types, then tick security measures you use.
- Click Calculate to see premium, risk score, and recommended settings.
- Use CSV or PDF download buttons to save the estimate.
Coverage limit and asset alignment
The calculator starts with your replacement-value estimate and converts it into a coverage limit. If you leave the limit blank, it uses the selected coverage percentage, then flags limits above 120% of assets to discourage over-insuring. This keeps premiums proportional to realistic loss exposure.
Risk drivers behind the annual rate
Annual rate is built from a crime-index base rate, then adjusted by property and contents multipliers. Apartments, shops, warehouses, jewelry, and cash-like items raise exposure because theft frequency and claim severity tend to be higher. The model clamps rates to avoid extreme outputs. Item count may add a small loading for documentation. Prior claims add a surcharge.
Security discounts and deductible credits
Security features reduce the rate through a capped discount: monitored alarms, CCTV, smart locks, safes, and item tracking each contribute. Separately, higher deductibles earn a credit based on deductible-to-limit ratio. Together they can meaningfully lower cost while changing out-of-pocket responsibility during a claim. Use the graph to test how premium changes as deductible rises. Confirm the deductible remains affordable in a cashflow scenario.
Term pricing, taxes, and expected loss
Premium is calculated annually, then prorated by policy term months and increased by your tax and fee percentage. The calculator also estimates theft probability from the crime index and modifiers, then computes expected annual loss with an inflation assumption. Use these figures to balance cost versus risk. If expected loss is well below premium, you are buying stability, not just expected value. If it is close, review limits and security.
Interpreting results and improving decisions
Compare premium, risk score, expected loss, and uncovered amount to find a sensible plan. If uncovered value is high, raise the limit or reduce assets exposed. If premium is high, test higher deductibles or add security measures, then validate affordability using the typical net out-of-pocket figure. The recommended limit and deductible provide a baseline to discuss with an agent. Export CSV for audits and PDF for sharing with partners.
FAQs
What does the crime index represent?
It’s a relative risk indicator from 1 to 200, where 100 is average. Higher values increase the base rate and estimated theft probability, raising premium. Use a local benchmark when available to keep comparisons meaningful.
Should I set coverage above 100% of assets?
Usually no. Limits above replacement value can increase premium without improving outcomes. Only exceed 100% if your items are likely to rise in price soon or you need a buffer for temporary storage or seasonal inventory.
How do security add-ons affect results?
Each security feature applies a capped discount to the rate and partially reduces estimated theft probability. Monitored alarms, CCTV, and reinforced access generally help most. Use the graph to see whether upgrades or deductible changes deliver bigger savings.
Why did my premium increase with more items?
More items can add an administration loading because valuation and proof-of-ownership work increases. It can also reduce the effect of discounts slightly. If you have many low-value items, consider grouping or raising the deductible.
What is “expected annual loss” used for?
It’s an estimated average loss value based on theft probability, coverage limit, and inflation. It helps you compare premium versus risk. It is not a promise of payout and may differ from insurer underwriting or real claim patterns.
Can I download and share the estimate?
Yes. After calculating, use the CSV button for spreadsheets and the PDF button for a shareable summary. Downloads include your premium, rate drivers, risk score, and recommended settings for quick review.