Taxpayers receiving a “Notice of Deficiency” or a “90-day letter” advising them of an asserted deficiency by the IRS, must respond within 90 days with a petition to the United States Tax Court, or their legal right to contest the deficiency is forfeited. Our office provides federal tax litigation representation to taxpayers in the Tax Court and appeals taken from the Tax Court taken to the United States Courts of Appeal. We are often consulted by accountants involved in IRS audits for their clients, and asked to review legal and tax issues involved. Working with accountants, we endeavor to assist in settling the tax audit. However, where settlement is not possible, we may continue to provide representation as the dispute progresses to Tax Court and, if necessary, to the Court of Appeals.