The Loudoun County Board of Supervisors establishes vehicle personal property tax rates each year during the regular budget process. The current tax rate for most all vehicles is $4.20 per $100 of assessed value. If a vehicle has situs for taxation in Loudoun, the county computes the tax by dividing the assessment by 100 and multiplying the result by the appropriate tax rate. The tax is then prorated, if necessary, based on the number of months that the vehicle is in the County. For qualified personal use vehicles, the tax bill is reduced by the Commonwealth’s Personal Property Tax Relief (PPTR) percentage, which is also set by the Loudoun County Board of Supervisors annually. The current percentage of personal property tax relief is 39% and is provided only on the first $20,000 of a vehicle’s value.