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I have had a full time W-2 day job for most of my working life, and was hoping that my e-commerce websites would bring me more income.  Instead my Schedule C has been struggling at a loss, but my full time job, brought in money that I paid taxes on.  I am currently without a W-2 job in 2018, and my Schedule C is still operating at a loss.  Could I carry back the NOL to the prior two years to offset the taxes that I paid for my W-2 jobs?