INCURRED BUT NOT REPORTED (IBNR), in insurance, losses occurring over a specified period that have not been reported to the insurer. IBNR losses are often calculated as a percentage of claims paid and claims outstanding and are reported in an insurers annual report. Reinsurers establish IBNR reserves as a part of their rating plans under a facultative reinsurance treaty, lest an overly optimistic view of treaty results lead to further under-rating on a book of business. Example: Product liability losses are seldom reported during a policy year. This "tail" of claims will upset any rating plan, unless an IBNR reserve is established and factored into the profit picture.
SEMIVARIALBLE COST is one that varies with changes in volume, but, unlike variable cost, does not vary in direct proportion. This component contains both fixed and variable elements, e.g., a rented vehicle may have a rental fee (fixed), but contain a mileage adder (variable).
YANKEE CD is a Certificate of Deposit issued in the United States through the branch of a foreign bank, but denominated in U.S. dollars.
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