I prepare tax returns too.  I come here to watch other wannabe auditors do their thing.  I often advise clients on what may happen if they do not correct a mistake on a return that is already filed.  If they decide to file an amended return, they can pay me to do that.  If I think they are cheating the government more than the average taxpayer, I can drop them as clients.  Usually they have come to me because they want to get closer to voluntary compliance, and life is too short for me to beat them into submission.