IFRS rules require inventory to be valued at the lower of cost or net realizable value (NRV). NRV is calculated as estimated sales price less estimated selling costs. At December 31, 20X8, NRV = $740,000 ? $50,000 = $690,000. Since cost is $720,000, then the lower of cost or NRV is $690,000 and a $30,000 writedown is required.
At January 31, 20X9, NRV = $810,000 ? $50,000 = $760,000. Under IFRS, when inventory recovers in value after being written down, it may be “written up” and a gain recognized in the income statement. The amount of such gain, however, is limited to the amount previously recognized as a loss. Under IFRS it is not permissible to report inventory on the balance sheet at an amount that exceeds original cost, except in the case of some agricultural and mineral products. Since cost is $720,000, the lower of cost of NRV is $720,000.