Complete your protest and mail it to the IRS address on the letter that explains your appeal rights. 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.A letter of appeal is more effective when it's written concisely and contains complete information that can help the IRS gauge the validity of your protest. Use the appropriate Petition for Review form below to appeal the full cash (market) value or classification of property shown on the Notice of Valuation. Most cases filed in the Tax Court are property tax appeals, this guide focuses on property tax cases and serves only as a general guide. Your letter should clearly state your disagreement with the IRS decision or notice and provide specific reasons for your appeal. 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. Petition for Review of Taxpayer Notice of Claim. This form is used to appeal a Tax Officer's decision of a Notice of Claim. The property owner can file a Petition for Review with the County Assessor within 60 days of when the Notice of Valuation was mailed.