Complete your protest and mail it to the IRS address on the letter that explains your appeal rights. Incomplete appeal requests may result in a denial. 1.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. Fairfax County, Virginia - Application download and How to file an appeal with the Board of Equalization. 2) Free File Fillable Forms are electronic federal tax forms you can fill out and file online for free. Purpose of this form: You can use this form to appeal a Letter 4890 Notice of Denial or a Letter 5015 Notice of Revocation of your IRS-approved. By filing a petition for appeal, you'll be informing the IRS that they've received incorrect information or made an error.