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.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. You have the right to dispute any Tax Department bill or notice you disagree with. This letter provides more information about your right to appeal a change we made to the amount of the Recovery Rebate Credit on your 2020 tax return.