The annual rate at which an additional amount accrues over a debt (e.g. a loan or note). Interest Rates may be expressed as a fixed percentage or be benchmarked against an independent index (e.g. the London Interbank Offered Rate (LIBOR)). The Interest Rate for a given debt will depend on various factors including inflation, the industry of the borrower or issuer and the underlying security of the debt (e.g. if it is secured by real property or other assets of the borrower or issuer).