Which NRV should I take for disposal of other assets?

I think by "impairment" you really mean depreciation. Am I correct? I think by "Dr P/L" you mean "Disposal Account". How am I doing? Ok, the asset has an original cost of $210,000 and you have depreciated it as at December 2013 by $60,000 By June 2014, the date of sale, the asset value is "market?" value of $100,000 (do you mean carrying value?) Whatever, the value has fallen since the previous December from $150,000 to $100,000. If depreciation is not being accounted for on a monthly basis, the selling price will be compared with the figure of $150,000 as at previous December and will result in a loss on disposal being recorded amounting to $150,000 carrying value less $70,000 sale proceeds = $80,000 If depreciation IS being accounted for on a monthly basis, then you will need to calculate the depreciation expense for the 6 months to June 2014, deduct that expense from $150,000 and compare the net figure with the $70,000 sale proceeds The net expense of depreciation + loss on disposal will equal $80,000 Ok?