Integral Foreign Operations :

The financial statements of an integral foreign operation should be translated using the principles and procedures in paragraphs 8 to 16 as if the transactions of the foreign operation had been those of the reporting enterprise itself.

The individual items in the financial statements of the foreign operation are translated as if all its transactions had been entered into by the reporting enterprise itself. The cost and depreciation of tangible fixed assets is translated using the exchange rate at the date of purchase of the asset or, if the asset is carried at fair value or other similar valuation, using the rate that existed on the date of the valuation. The cost of inventories is translated  at the exchange rates that existed when those costs were incurred. The recoverable amount or realisable  value of an asset is translated using the exchange rate that existed when the recoverable amount or net realisable value was determined. For example, when the net realisable value of an item of inventory is determined in a foreign currency, that value is translated using the exchange rate at the date as at which the net realisable value is determined. The rate used is therefore usually the closing rate. An adjustment may be required to reduce the carrying amount of an asset in the financial statements of the reporting enterprise to its recoverable amount or net realisable value even when no such adjustment is necessary in the financial statements of the foreign operation. Alternatively, an adjustment in the financial statements of the foreign operation may need to be reversed in the financial statements of the reporting enterprise.

For practical reasons, a rate that approximates the actual rate at the date of the transaction is often used, for example, an average rate for a week or a month might be used for all transactions in each foreign currency occurring during that period. However, if exchange rates fluctuate significantly, the use of the average rate for a period is unreliable.