(8)Many European banks argue that IAS 39 does not allow them to apply hedge accounting to their core deposits on a portfolio basis and would force them to carry out disproportionate and costly changes both to their asset/liability management and to their accounting systems. As a portfolio hedge, due to internal interactions and the law of large numbers, is different from the hedge of a single asset or a single liability, it is also argued that enabling portfolio hedge accounting of core deposits on a fair value measurement basis is consistent with the principle in IAS 39 that the fair value of a financial liability with a demand feature cannot be less than the amount payable on demand.