세무상 이월결손금의 실현가능성과 공제기한 변경이 실질이익조정에 미치는 영향에 관한 연구

This study was done to see if there is any Tax NOL Carryforwards and how Deduction period Revision has impacted on Real Earnings Management in respect with Realizable Possibility as follows. First, this study looked at how discriminative it is in Real Earnings Management between businesses with Tax NOL Carryforwards and ones without Tax NOL Carryforwards regardless of Realizable Possibility of NOL Carryforwards. Second, this study also sought to prove the validity of tax law revision indirectly by analyzing the impacts Tax NOL Carryforwards have on Real Earnings Management. The results of this study are summed up as follows: First, the impacts of Tax NOL Carryforwards on Real Earnings Management essentially turned out to be the same without current standards classifying deferred tax asset according to Realizable Possibility of Tax NOL Carryforwards. In other words, this means not only the businesses appropriating tax expenses of Tax NOL Carryforwards for deferred tax asset but also the businesses which haven’t should advance regulation of profits compared with the businesses with no Tax NOL Carryforwards. Second, the impacts of Tax NOL Carryforwards before and after Tax NOL Carryforwards Deduction Period Revision on Real Earnings Management turned out to be reduced significantly. Also, these results have differences in significance according to Tax NOL Carryforwards. Through the verification of this study, the businesses not appropriating tax expenses for deferred tax asset due to low realizable possibility of Tax NOL Carryforwards have the impacts on Real Earnings Management were found discriminative compared with the businesses with no Tax NOL Carryforwards. In addition, Deduction period extension of Tax NOL Carryforwards has reduced businesses Earnings Management incentive, having positive effects on the usefulness of accounting information.