Introduction To Ratemaking And Loss Reserving — For Property And Casualty Insurance

This text provides a concise, structured overview of the fundamentals of ratemaking and loss reserving in property and casualty (P&C) insurance. It’s aimed at actuaries, underwriters, risk managers, insurance students, and other professionals who need a practical introduction to pricing insurance products and establishing reserves for unpaid claims.

When an accident happens, the insurer owes money. This text provides a concise, structured overview of

Total Reserve = Case Reserves + IBNR

P&C insurance is heavily regulated at the state level (in the US) or by national authorities (e.g., PRA in the UK, EIOPA in Europe). Total Reserve = Case Reserves + IBNR P&C

Key Regulatory Concepts:

Even perfect actuarial science can be overridden by market forces: Even perfect actuarial science can be overridden by