Citizens are required to register with the Commissioner of the Revenue's Office within 60 days of a vehicle relocating to the city. Let's go over answers to the most frequently asked questions about personal property taxes.When you complete your registration, you'll receive your 15-digit sales tax account number and your Sales Tax Certificate of Registration (Form ST-4). If taxes are included in the property owner's mortgage payments, the City will bill the bank or mortgage company for taxes due. If the property has been sold or the recipient is no longer responsible for a Vienna tax bill, please notify the real estate tax office immediately. Tax bills are generally mailed to property owners 30 days prior to the property tax due date. Contact your town to find out the tax due date.