Verkko1) go online to www. fairfaxcounty. gov/taxes (click on “real estate tax” and “view my property”). Verkkothe deadline for submitting online appeals is april 1, 2024 at 4:30 p. m. Administrative appeals will not be accepted after this date. Verkkolearn why you should appeal your property taxes if they are too high and how to do it. Find out the benefits of lowering your assessed value, the. The information in this material is not intended as tax or legal advice. It may not be used for the purpose of avoiding any federal tax penalties. Please consult legal or.