Failing to file federal income tax returns over a number of years can be a crime. You should engage a federal tax attorney to assist you in getting your returns prepared and filed. There is no privilege with your communications with your tax accountant, and he or she can become a witness against you. There is a policy of forgiveness if you file your returns and pay the tax before you are contacted by the IRS about the delinquent returns. There is no time to loose, and you are faced with a serious problem.