ratemaking
pure-premium-method
loss-ratio-method
indicated-rate-change
credibility
permissible-loss-ratio
actuarial
rate-filing
CAS
property-casualty
insurance-pricing
Zero-PII

Insurance Ratemaking Adequacy Tester — Pure Premium Method

Implements the pure premium (exposure-based) ratemaking method per CAS Exam 5 study materials and the CAS Statement of Principles Regarding P&C Insurance Ratemaking. Computes on-level premium, trended ultimate loss, exposure-weighted trended pure premium, the permissible loss ratio, the indicated rate change (loss-ratio method), and the credibility-weighted indication using the classical square-root standard (default full-credibility 1,082 claims). Outputs a year-by-year table, indicated-change summary, permissible-LR decomposition, an adequacy verdict, and a trend/PLR sensitivity grid. On-level factors and loss development are user-supplied. Client-side. Works offline. Zero PII.

Tool URL: https://ainumbers.co/tools/459-insurance-ratemaking-adequacy.html AP2/Policy Mandate export: yes

post/v1/tools/test_ratemaking_adequacy

Request

  • Base URL: https://ainumbers.co
  • URL: https://ainumbers.co/v1/tools/test_ratemaking_adequacy
  • Auth: none declared

Request body

lossTrendnumber required
trendPeriodnumber required
premTrendnumber
varExpnumber required
fixedExpnumber required
profitnumber required
credMethodstring
fullCrednumber required
complementTypestring
complementValnumber

Response

Successful tool execution result

indicated_change_uncappednumber

Final credibility-weighted indicated rate change (fraction)

indication_before_credibilitynumber
credibility_znumber
trended_pure_premiumnumber
permissible_loss_rationumber
actual_loss_rationumber
total_claimsnumber

Changes

No recorded changes to this operation across all 1 revision of this API.