INCURRED BUT NOT REPORTED (IBNR)
INCURRED BUT NOT REPORTED (IBNR) – Losses that have occurred but have not been reported to the insurer as of a particular date, sometimes referred to as “pure IBNR.” The definition of IBNR is often expanded to include future development on case reserves and loss on reopened claims, sometimes referred to as RBNE (reserved but not enough). The amount of IBNR is typically estimated by a casualty actuary.