An official website of Mecklenburg County. You may be entitled to a tax exemption or exclusion if your real or business personal property meets certain criteria.Application filing period is Jan. AV-10 Application is for property classified and excluded from the tax base under North Carolina General Statute. Once certified, submit Form NCDVA-9 and Form AV-9 Application for Property Tax Relief to your local county tax office. Find Local Rules and Forms that provide procedures and guidelines for courts in Mecklenburg County. All businesses need to complete the Business Registration Form so they are registered with Mecklenburg County. Submit the listed items to ensure the Department of Revenue (Department) can process your exemption application. Submit all required information. Please include the type of record request, party name(s), and the file number if known.