TaxWizard

Technical note: when responding to a 90-day letter (Notice of Deficiency) it is mandatory you send the response by certified mail since this falls under the rules of the U.S. Tax Court.

ALWAYS send a copy by CERTIFIED MAIL. Lawyers will often send a document 3 or 4 different ways to be sure receipt can be proved in court.

Your client's story strikes me as patently false. Unless she's your girlfriend, send her packing.

ATX website says Windows 8 is not currently supported. Who was it that said we all need to bow to technological progress? It sure wasn't P.T. Barnum who said, "There's a sucker born every minute."

The only legal way to correct a depreciation error is to file an amended return. You are not "changing an accounting(/depreciation) method; you are correcting a mistake. You may also want to request 100% abatement of any penalty, explaining the error was one of duplication and the client took all required steps to remedy that error.