Headed by Robert Locke, the Tax Collector's Office provides billing and collection of all Darien taxes. This includes real estate, personal property, motor vehicle taxes, sewer taxes and special assessment billings. <br /><br />Real estate taxes are billed and collected semi-annually (July 1st and January 1st). Motor vehicle and personal property taxes are due annually (July 1st). Supplemental Motor Vehicle taxes are also billed annually and are due on January 1st.<br /><br />The Town of Darien's website provides comprehensive information regarding town taxes.