All entities are exposed to some form of market risk. For example, gold mines are exposed to the price of gold, airlines to the price of jet fuel, borrowers to interest rates, and importers and exporters to exchange rate risks. Many
financial institutions and corporate businesses (entities) use
derivative financial instruments to hedge their exposure to different risks (for example
interest rate risk,
foreign exchange risk,
commodity risk, etc.). Accounting for derivative financial instruments under
International Accounting Standards is covered by IAS39 (Financial Instrument: Recognition and Measurement). IAS39 requires that all derivatives are marked-to-market with changes in the mark-to-market being taken to the
profit and loss account. For many entities this would result in a significant amount of profit and loss volatility arising from the use of derivatives. An entity can mitigate the profit and loss effect arising from derivatives used for hedging, through an optional part of IAS39 relating to hedge accounting. ==Foreign currency exposure==