At Fault Surcharge Percent Table Lookup
Audit actual rated at-fault accident count under caller verified surcharge tiers and pre-accident premium; input is rating evidence, no finding of liability or jurisdiction rate authority.
Description
At-fault surcharge tiers operate on already rated accident evidence.
At-fault surcharge tiers operate on already rated accident evidence. Selecting a tier cannot determine liability.1
The returned values include Caller at fault surcharge basis points applied, Caller rounded premium adjustment minor. The How section below explains the calculation, input rules and interpretation.
When to use At Fault Surcharge Percent Table Lookup
Use At Fault Surcharge Percent Table Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No fault finding, current rate table or jurisdictional rating authority is supplied.
Prepare the observed policy, claim or quote evidence and independently verified policy tables. Monetary fields use integer minor units in one currency: for a currency with 100 minor units per major unit, enter 12345 for 123.45. One basis point is 0.01 percentage points, so 10000 basis points represents 100%.
How to use At Fault Surcharge Percent Table Lookup and understand its results
- Prepare the observed policy, claim or quote evidence and independently verified policy tables. Monetary fields use integer minor units in one currency: for a currency with 100 minor units per major unit, enter 12345 for 123.45. One basis point is 0.01 percentage points, so 10000 basis points represents 100%.
- Enter observedRatedAtFaultAccidentCount, callerAtFaultCountLowerEdges, callerAtFaultSurchargeBasisPoints, callerPreAccidentAnnualPremiumMinor using the field table and calculation rules, then run the tool.
- Read callerAtFaultSurchargeBasisPointsApplied, callerRoundedPremiumAdjustmentMinor. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| observedRatedAtFaultAccidentCount | Observed rated at fault accident count | number | Required |
| callerAtFaultCountLowerEdges | Caller at fault count lower edges | list of number | Required |
| callerAtFaultSurchargeBasisPoints | Caller at fault surcharge basis points | list of number | Required |
| callerPreAccidentAnnualPremiumMinor | Caller pre accident annual premium minor | number | Required |
Enter integer rated accident count 0–1000000, aligned nonempty strictly increasing finite lower edges beginning at zero, integer surcharge basis points 0–10000 and integer premium 0–10¹². Use the last lower-inclusive tier; return rate and rounded adjustment.
rate=last tier with lowerEdge≤count; adjustment=roundMinor(premium×rate/10000) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| callerAtFaultSurchargeBasisPointsApplied | Caller at fault surcharge basis points applied | number |
| callerRoundedPremiumAdjustmentMinor | Caller rounded premium adjustment minor | number |
{
"input": {
"observedRatedAtFaultAccidentCount": 15,
"callerAtFaultCountLowerEdges": [
0,
10,
20
],
"callerAtFaultSurchargeBasisPoints": [
0,
1000,
2000
],
"callerPreAccidentAnnualPremiumMinor": 10000
},
"output": {
"callerAtFaultSurchargeBasisPointsApplied": 1000,
"callerRoundedPremiumAdjustmentMinor": 1000
}
}Limitations and assumptions
No fault finding, current rate table or jurisdictional rating authority is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Accident Forgiveness First Checker: Forgiveness inventory depends on prior usage, lifetime slots and verified endorsement. A zero-current-accident comparison can pass even with no slots. For a complementary task, use Speeding Points Premium Percent Lookup: Speeding-point premium adjustment depends on a verified insurer tier table. Lower-inclusive edges define when a surcharge changes.
References
-
At Fault Surcharge Percent Table Lookup — tool.io
Similar or alternative tools
- Accident Forgiveness First Checker
Forgiveness inventory depends on prior usage, lifetime slots and verified endorsement. A zero-current-accident comparison can pass even with no slots.
- Speeding Points Premium Percent Lookup
Speeding-point premium adjustment depends on a verified insurer tier table. Lower-inclusive edges define when a surcharge changes.