IBNR reserves are funds for future payments for claims not yet reported. Why are they important in loss reserving for evolving risks?

• A. Integrated Business Risk
• B. Immediate Benefits Not Reported
• C. Insured By Regional
• D. Incurred But Not Reported reserves fund future payments for claims not yet reported

Answer: (D)

IBNR reserves capture losses that have occurred but have not yet been reported, and they adjust for how risk patterns and timing of claims can evolve. In evolving risks, the mix of exposures and how quickly claims are reported or settled can change, meaning the ultimate cost of claims may differ from what is currently known. Relying only on claims that are reported or on known case reserves risks underestimating liabilities, because there will still be future payments for incidents that have already happened but aren’t reflected in the numbers yet. IBNR provides an estimate of the expected ultimate losses by accounting for reporting lags, development patterns, and shifts in risk, ensuring reserves remain adequate as the risk environment evolves. The other options don’t describe this concept or standard reserve categories.