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If it is an operating loss, the rules require you to carry the loss back for two years before you carry it forward. If you paid tax in the prior years, you may be able to get a refund for those years.
You'll need to see an accountant (I'd recommend a CPA) with all of your data in order to determine if your loss qualifies, compute the "net operating loss" if applicable and then prepare the refund claims on either 1040X for each year or Form 1045 for the "quickie carryback" if the periods are allowed.
I did the 2 years prior,but still have a sum in excess of $700,000. and am not making hardly any money now to use the credits.Is it legal to request a refund?