Can anyone explain the post-2017 NOL limited to 80% of taxable income before any NOL deduction?  Taxable income is negative before.  If I show it all carry forward to 2022, then taxable income is positive.  Do I limit it to 80% of that number?  Do I limit it to 80% of the negative taxable income to carry forward?  I have called Lacerte and the IRS.  Can someone please help?