All owners of taxable personal property are required, annually, to file a Personal Property Declaration Form M-15. Pay Personal Property Taxes Online enables online payments for personal property tax bills received from Middlesex County.Many standard forms are available below. All forms are categorized into their respective departments. This page was developed to provide information about the Office of the Medical Examiner for the citizens of Middlesex County. Complete all sections that apply. The personal property tax relief program is no longer intended to eliminate the personal property tax, but rather provide a reduction to the taxpayer. We can provide you with samples of court forms that are available. We can provide you with guidance on how to fill out forms. The Middlesex County Fire Academy is a 26 acre, state of the art training facility conveniently located in Central New Jersey.