If, upon audit or examination, the Director or his duly authorized agent determines there is additional tax due, the Director shall prepare a schedule reflecting the amount of additional tax, interest and penalties payable and shall furnish to the taxpayer, if available, a copy of this schedule. A “Notice of Proposed Assessment” and “Taxpayer's Bill of Rights” shall also be mailed to the taxpayer at the address listed upon the application for retail permit or the actual business address of the taxpayer or hand delivered to the taxpayer.