Complete your protest and mail it to the IRS address on the letter that explains your appeal rights. The IRS Independent Office of Appeals is here to resolve disputes, without litigation, in a way that is fair and impartial to the government and to you.Common things that need including are: your name, contact number, and address. This form is to be used to request an Appeals review upon completion of an examination (audit) if you do not agree with our proposed changes from the audit. Use Form 12203, Request for Appeals Review, or the form referenced in the letter to file your appeal, or prepare a brief written statement. Hint: You should always give your CPA a headsup before responding. The IRS still relies heavily on U.S. Postal mail to reach out to taxpayers. Filing a Case in the United States Tax Court. Before filing your case in the United States Tax Court, please read these instructions carefully. Find self-help tools to help you with your tax issues.