Portal for filling out and submitting Business Personal Property Listings and Extensions. 1. Who sets the Personal Property tax rate?Pay your Personal Property tax online, and review information about the Heavy Equipment Rental Gross Receipts tax. This calculator is designed to estimate the county vehicle property tax for your vehicle. The calculator should not be used to determine your actual tax bill. Make tax due, estimated tax, and extension payments. North Carolina property tax law requires counties to assess the value of motor vehicles registered with the NC Division of Motor Vehicles. If you're Self-Employed: Your most recent tax return or copies of your business records. If you don't have that, fill out this form. Personal property and motor vehicle are computed in the same manner.