Looking at the IRS website is a bit like those commercials. If you have in the past filed a fraudulent income tax return, or one that the IRS believes was fraudulent, you can by reading the site, find a list of worst-case scenarios that include for you years in prison and hundreds of thousands of dollars in fine.
With April 15 having arrived, the time to discuss potential irs tax penalties and the details of the return(s) in question is now. In some cases, of course, the "fraud" is no more than a disagreement between you and the IRS over accounting matters, bookkeeping, employee errors and the like. In other situations, taxpayers have made mistakes that they wish to deal with now so that they can move on with their lives and their businesses.
One key in dealing with these situations is choosing your allies properly. A law firm that focuses on serious tax matters for clients from Chicago to Cleveland and from coast to coast is deeply steeped in knowledge of current law, changes in regulations and requirements and experienced in negotiating favorable resolutions of disputes with tax officials.