A machine cost $1,000 and has a carrying amount of $900. For tax purposes, depreciation of 200 has already been deducted in the current and prior periods and the remaining cost will be deductible in future periods, either as depreciation or through a deduction on disposal. Revenue generated by using the machine is taxable, any gain on disposal of the machine will be taxable and any loss on disposal will be deductible for tax purposes. The temporary difference is $