When To Use an NOL Generally, if you have an NOL for a tax year ending in 2015, you must carry back the entire amount of the NOL to the 2 tax years before the NOL year (the carryback period), and then carry forward any remaining NOL for up to 20 years after the NOL year (the carryforward period). You can, however, choose not to carry back an NOL and only carry it forward. See Waiving the Carryback Period, later. You cannot deduct any part of the NOL remaining after the 20-year carryforward period. NOL year. This is the year in which the NOL occurred.
I'd urge you all once more to study, to read and do your own D&D concerning your Investment (here WMIH !), because it's YOUR hard earned money .... and you could loose everything by doing wrong decisions (see as example here the wrong decision for buying PIERS and/or give NO release ... it was a grievious fault ...), don't fall for "EXPERTS" on MB's, they all have their own agenda ...
There's a small group of posters here on this board who provide us generously with honest info's out from their studies of official documents (SEC, KCCLLC, IRS, etc.,etc.), be grateful to them, we know who you are .... but DO READ & STUDY for YOURSELF !!! It will pay good interest !