carryforwards given a cost of capital of 8% ? How would the present value change under current law which restricts the amount of the deduction to 80% of pre-tax income? The present value of these acquired tax loss carryforwards is @ billion. (Round to two decimal places.) How would the present value change under current law which restricts the amount of the deduction to 80% of pre-tax income? The present value of these acquired tax loss carryforwards is $ billion. (Round to two decimal places.)