Tricky Problem of Computing NOL with Expiration After Given Period

This page illustrates how to deal with the tricky problem of computing NOL when there is an expiration.  If the NOL can be used for an indefinite period there is no big deal.  But when there is an expiration after a certain period of time, the problem becomes difficult.  You have to remember when the NOL occurred and make an adjustment.

Excel File that Illustrates Computation of Net Operating Loss for Taxes with Expiration of the Carryforward