net operating losses (NOLs) arising before 12/31/17 can be carried forward 20 years and applied against 100% of a future year's net operating income, and can be carried back 2 years to be applied to previously earned net operating income. It also explains that NOLs arising after 1/1/18 can be carried forward indefinitely and applied towards 80% of a future year's net operating income. But I didn't see an information on carryback for NOLs arising after 1/1/18. Is this because NOLs arising after 1/1/18 can't be carried back? Or is this because the limitation hasn't changed and they can still be carried back 2 years just like NOLs from previous years?